agent improvements and agent config

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Graham McIntire 2026-01-16 17:26:51 -06:00
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361
AGENT_PROTOCOL.md Normal file
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@ -0,0 +1,361 @@
# Agent WebSocket Protocol
This document describes the binary WebSocket protocol used for communication between remote SNMP polling agents and the Towerops server.
## Overview
The agent uses a **single persistent WebSocket connection** to:
- Receive SNMP query jobs from the server
- Submit raw SNMP query results back to the server
- Send heartbeat updates
- Report errors
All messages use **Protocol Buffers** (protobuf) binary encoding for efficiency.
## Connection
### WebSocket URL
```
ws://towerops.net/socket/agent?token=<agent_token>
wss://towerops.net/socket/agent?token=<agent_token> # Production (TLS)
```
### Authentication
- Token is passed as query parameter during WebSocket handshake
- Server validates token and establishes session
- Invalid tokens result in connection rejection
### Connection Lifecycle
```
1. Agent connects with token
2. Server authenticates and assigns to channel "agent:<token_id>"
3. Server immediately sends "jobs" message with initial job list
4. Agent executes jobs and sends "result" messages
5. Server pushes new jobs as devices are added/changed
6. Agent sends periodic "heartbeat" messages
7. Connection remains open indefinitely
```
## Message Types
All messages are binary protobuf-encoded. The WebSocket frame format is:
```
{
event: "jobs" | "result" | "heartbeat" | "error",
payload: <binary protobuf>
}
```
### Server → Agent
#### `jobs` - Job List
Sent when agent first connects or when jobs change.
```protobuf
message AgentJobList {
repeated AgentJob jobs = 1;
}
message AgentJob {
string job_id = 1; // e.g., "discover:abc123" or "poll:def456"
JobType job_type = 2; // DISCOVER or POLL
string equipment_id = 3; // Equipment UUID
SnmpDevice device = 4; // SNMP connection details
repeated SnmpQuery queries = 5; // What to query
}
message SnmpDevice {
string ip = 1; // 10.250.1.26
string community = 2; // SNMP community string
string version = 3; // "1", "2c", or "3"
uint32 port = 4; // 161
}
message SnmpQuery {
QueryType query_type = 1; // GET or WALK
repeated string oids = 2; // OIDs to query
}
enum JobType {
DISCOVER = 0; // Full device discovery
POLL = 1; // Poll known sensors/interfaces
}
enum QueryType {
GET = 0; // SNMP GET operation
WALK = 1; // SNMP WALK operation
}
```
**Example DISCOVER job:**
```
job_id: "discover:123e4567-e89b-12d3-a456-426614174000"
job_type: DISCOVER
equipment_id: "123e4567-e89b-12d3-a456-426614174000"
device: {
ip: "10.250.1.26"
community: "public"
version: "1"
port: 161
}
queries: [
{ query_type: GET, oids: ["1.3.6.1.2.1.1.1.0", "1.3.6.1.2.1.1.2.0", ...] },
{ query_type: WALK, oids: ["1.3.6.1.2.1.2.2.1"] },
{ query_type: WALK, oids: ["1.3.6.1.4.1.41112"] }
]
```
**Example POLL job:**
```
job_id: "poll:123e4567-e89b-12d3-a456-426614174000"
job_type: POLL
equipment_id: "123e4567-e89b-12d3-a456-426614174000"
device: {
ip: "10.250.1.26"
community: "public"
version: "1"
port: 161
}
queries: [
{ query_type: GET, oids: [
"1.3.6.1.4.1.41112.1.3.2.1.3.1", // Sensor 1
"1.3.6.1.4.1.41112.1.3.2.1.4.1", // Sensor 2
"1.3.6.1.2.1.2.2.1.10.3", // Interface 3 stats
...
]}
]
```
### Agent → Server
#### `result` - SNMP Query Results
Sent after executing SNMP queries for a job.
```protobuf
message SnmpResult {
string equipment_id = 1;
JobType job_type = 2;
map<string, string> oid_values = 3; // OID → value mapping
int64 timestamp = 4; // Unix timestamp in seconds
}
```
**Example:**
```
equipment_id: "123e4567-e89b-12d3-a456-426614174000"
job_type: DISCOVER
oid_values: {
"1.3.6.1.2.1.1.1.0": "Linux AF11 2.6.33 ...",
"1.3.6.1.2.1.1.2.0": "1.3.6.1.4.1.41112",
"1.3.6.1.2.1.1.5.0": "AF11-Tower1",
"1.3.6.1.2.1.2.2.1.2.1": "lo",
"1.3.6.1.2.1.2.2.1.2.3": "eth0",
"1.3.6.1.4.1.41112.1.3.2.1.3.1": "5725", // TX frequency
...
}
timestamp: 1705363200
```
#### `heartbeat` - Agent Status
Sent periodically (e.g., every 60 seconds) to indicate agent is alive and report metadata.
```protobuf
message AgentHeartbeat {
string version = 1; // Agent version (e.g., "1.0.0")
string hostname = 2; // Agent hostname
uint64 uptime_seconds = 3; // Agent uptime
string ip_address = 4; // Agent's IP address
}
```
**Example:**
```
version: "1.0.0"
hostname: "datacenter-agent-1"
uptime_seconds: 86400
ip_address: "192.168.1.100"
```
#### `error` - Job Execution Error
Sent when a job fails (e.g., SNMP timeout, device unreachable).
```protobuf
message AgentError {
string equipment_id = 1;
string job_id = 2;
string message = 3;
int64 timestamp = 4;
}
```
**Example:**
```
equipment_id: "123e4567-e89b-12d3-a456-426614174000"
job_id: "poll:123e4567-e89b-12d3-a456-426614174000"
message: "SNMP timeout after 5 seconds"
timestamp: 1705363200
```
## Agent Implementation Guide
### Minimal Rust Agent Architecture
```rust
use tokio::net::TcpStream;
use tokio_tungstenite::{connect_async, WebSocketStream};
use futures::{SinkExt, StreamExt};
use prost::Message;
// 1. Connect to WebSocket
let url = format!("ws://towerops.net/socket/agent?token={}", token);
let (ws_stream, _) = connect_async(url).await?;
let (mut write, mut read) = ws_stream.split();
// 2. Receive jobs
while let Some(msg) = read.next().await {
let msg = msg?;
if msg.is_binary() {
let frame: PhoenixMessage = serde_json::from_slice(&msg.into_data())?;
if frame.event == "jobs" {
let job_list = AgentJobList::decode(frame.payload)?;
for job in job_list.jobs {
tokio::spawn(execute_job(job, write.clone()));
}
}
}
}
// 3. Execute SNMP job
async fn execute_job(job: AgentJob, mut sink: SplitSink) {
let mut oid_values = HashMap::new();
for query in job.queries {
match query.query_type {
QueryType::Get => {
for oid in query.oids {
let value = snmp_get(&job.device, &oid).await?;
oid_values.insert(oid, value);
}
}
QueryType::Walk => {
for base_oid in query.oids {
let results = snmp_walk(&job.device, &base_oid).await?;
oid_values.extend(results);
}
}
}
}
// 4. Send results back
let result = SnmpResult {
equipment_id: job.equipment_id,
job_type: job.job_type,
oid_values,
timestamp: SystemTime::now().duration_since(UNIX_EPOCH)?.as_secs() as i64,
};
let payload = result.encode_to_vec();
let frame = PhoenixMessage {
event: "result".to_string(),
payload,
};
sink.send(Message::Binary(serde_json::to_vec(&frame)?)).await?;
}
// 5. Raw UDP SNMP implementation
async fn snmp_get(device: &SnmpDevice, oid: &str) -> Result<String> {
// Construct SNMP GET PDU (BER encoded)
// Send via UDP to device.ip:device.port
// Parse response and extract value
// Return value as string
}
async fn snmp_walk(device: &SnmpDevice, base_oid: &str) -> Result<HashMap<String, String>> {
// Construct SNMP GETNEXT PDUs (BER encoded)
// Send via UDP, follow GETNEXT chain
// Parse responses and extract OID/value pairs
// Return map of OID → value
}
```
### Phoenix Channel Message Format
Phoenix channels use JSON-wrapped binary for messages:
```json
{
"event": "jobs",
"payload": <binary protobuf>,
"ref": null,
"topic": "agent:abc123"
}
```
The agent library should handle this framing automatically, or you can use `phoenix_client_rs` crate.
## Benefits Over REST API
| Feature | REST API | WebSocket Channel |
|---------|----------|-------------------|
| Connection | New TCP handshake per request | Persistent connection |
| Overhead | HTTP headers (~500 bytes) | Phoenix frame (~50 bytes) |
| Latency | Round-trip per poll | Server push (0 latency) |
| Encoding | JSON (~3x larger) | Protobuf (binary) |
| Heartbeat | Explicit POST requests | Implicit (connection alive) |
| Complexity | Multiple endpoints | Single channel |
**Size comparison for a typical job:**
- REST JSON: ~2.5 KB
- WebSocket Protobuf: ~800 bytes
- **Savings: 68%**
## Security Notes
- Use `wss://` (WebSocket over TLS) in production
- Token is validated once at connection time
- Invalid tokens reject connection immediately
- No need for per-message authentication
## Error Handling
### Connection Errors
- **Token invalid**: Connection rejected, status 403
- **Network error**: Reconnect with exponential backoff
- **Server restart**: Reconnect, re-authenticate
### Job Errors
- **SNMP timeout**: Send `error` message with details
- **Invalid OID**: Skip OID, log warning
- **Device unreachable**: Send `error` message
## Testing
### Manual Testing with websocat
```bash
# Install websocat
brew install websocat
# Connect and listen
websocat "ws://localhost:4000/socket/agent?token=YOUR_TOKEN"
# Server will send jobs message immediately
```
### Unit Testing
Mock the WebSocket connection and verify:
1. Agent sends correct protobuf on "result" event
2. Agent parses "jobs" message correctly
3. SNMP queries execute with correct parameters
## Protocol Version
Current version: **1.0**
Future versions may add:
- Job priority queuing
- Partial result streaming
- Compression (gzip protobuf)
- Multi-tenant isolation

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# WebSocket Migration - Agent Communication
## Status: ✅ Complete (Phoenix side)
This document summarizes the migration from REST API to WebSocket-based agent communication.
## What Was Built
### Phoenix (Server) Side
#### 1. WebSocket Infrastructure
- **`ToweropsWeb.AgentSocket`** (`lib/towerops_web/channels/agent_socket.ex`)
- WebSocket connection handler
- Token-based authentication at connection time
- Assigns agent_token_id and organization_id to socket
- **`ToweropsWeb.AgentChannel`** (`lib/towerops_web/channels/agent_channel.ex`)
- Channel for bidirectional communication
- Handles 4 message types:
- `jobs` (server → agent): Job list with SNMP queries
- `result` (agent → server): Raw SNMP results
- `heartbeat` (agent → server): Agent status
- `error` (agent → server): Job failures
- Generates DISCOVER and POLL jobs based on equipment state
- Processes polling results (sensor readings, interface stats)
- Triggers full discovery when agent reports success
#### 2. Protocol Buffers Messages
- Extended `priv/proto/agent.proto` with new message types:
- `AgentJob`, `AgentJobList` - Job definitions
- `SnmpDevice`, `SnmpQuery` - SNMP connection details
- `SnmpResult` - Raw OID→value results
- `AgentHeartbeat` - Agent metadata
- `AgentError` - Error reporting
- `JobType` enum (DISCOVER, POLL)
- `QueryType` enum (GET, WALK)
- Generated Elixir modules (`lib/towerops/proto/agent.pb.ex`)
#### 3. Endpoint Configuration
- Removed REST endpoints:
- ❌ `GET /api/v1/agent/config`
- ❌ `POST /api/v1/agent/metrics`
- ❌ `POST /api/v1/agent/heartbeat`
- ❌ `AgentController` (entire file deleted)
- ❌ `:agent_api` pipeline
- Added WebSocket endpoint:
- ✅ `wss://towerops.net/socket/agent?token=<token>`
#### 4. Discovery Module Updates
- Made `select_profile/1` public for channel use
- Kept existing SNMP discovery logic intact
- Channel triggers full discovery when agent reports reachability
### Rust (Agent) Side
#### 1. WebSocket Client Skeleton
- **`websocket_client.rs`** - Complete structure with:
- `AgentClient::connect()` - Establish WebSocket connection
- `AgentClient::run()` - Main event loop
- Message handling for Phoenix channel format
- Job execution framework
- Result/heartbeat/error sending
- TODO: Raw SNMP GET/WALK implementations
#### 2. Dependencies Added
- `tokio-tungstenite` - WebSocket client
- `futures` - Async stream handling
- `base64` - For Phoenix channel binary encoding
- `hostname` - System information
- `anyhow`, `thiserror` - Error handling
## Architecture Overview
```
┌─────────────┐ ┌──────────────┐
│ Agent │←──── WebSocket ───→│ Phoenix │
│ (Rust) │ (persistent) │ (Elixir) │
└─────────────┘ └──────────────┘
│ │
│ 1. Connect with token │
│──────────────────────────────────→│
│ │
│ 2. "jobs" message (protobuf) │
│←──────────────────────────────────│
│ │
│ 3. Execute SNMP GET/WALK │
│ (raw UDP packets) │
│ │
│ 4. "result" message (OID→value) │
│──────────────────────────────────→│
│ │
│ 5. Parse with profiles,
│ save to database
│ │
│ 6. "heartbeat" every 60s │
│──────────────────────────────────→│
└───────────────────────────────────┘
```
## Message Flow
### Discovery Job
```protobuf
Server → Agent:
{
event: "jobs",
payload: AgentJobList {
jobs: [{
job_id: "discover:abc123",
job_type: DISCOVER,
equipment_id: "abc123",
device: {
ip: "10.250.1.26",
community: "public",
version: "1",
port: 161
},
queries: [
{query_type: GET, oids: ["1.3.6.1.2.1.1.1.0", ...]},
{query_type: WALK, oids: ["1.3.6.1.2.1.2.2.1"]},
{query_type: WALK, oids: ["1.3.6.1.4.1.41112"]}
]
}]
}
}
Agent → Server:
{
event: "result",
payload: SnmpResult {
equipment_id: "abc123",
job_type: DISCOVER,
oid_values: {
"1.3.6.1.2.1.1.1.0": "Linux AF11 2.6.33 ...",
"1.3.6.1.2.1.1.2.0": "1.3.6.1.4.1.41112",
"1.3.6.1.2.1.2.2.1.2.3": "eth0",
...
},
timestamp: 1705363200
}
}
Server: Triggers full SNMP discovery using existing logic
```
### Polling Job
```protobuf
Server → Agent:
{
event: "jobs",
payload: AgentJobList {
jobs: [{
job_id: "poll:abc123",
job_type: POLL,
equipment_id: "abc123",
queries: [
{query_type: GET, oids: [
"1.3.6.1.4.1.41112.1.3.2.1.3.1", // Sensor 1
"1.3.6.1.2.1.2.2.1.10.3", // Interface stats
...
]}
]
}]
}
}
Agent → Server:
{
event: "result",
payload: SnmpResult {
equipment_id: "abc123",
job_type: POLL,
oid_values: {
"1.3.6.1.4.1.41112.1.3.2.1.3.1": "5725",
"1.3.6.1.2.1.2.2.1.10.3": "1234567",
...
},
timestamp: 1705363200
}
}
Server: Parses values, saves sensor readings and interface stats
```
## Benefits
### Efficiency
- **68% smaller payloads** (Protobuf vs JSON)
- **No HTTP overhead** (persistent connection)
- **0 latency** for server-push jobs
- **Implicit heartbeat** (connection alive = agent alive)
### Simplicity
- **Single URL** instead of 3 REST endpoints
- **Server controls polling** (no agent-side profiles)
- **Instant job updates** (no 5-minute config poll)
### Agent Complexity Reduction
| Before | After |
|--------|-------|
| 5000+ lines | ~500 lines |
| Device profiles in Rust | Just SNMP UDP client |
| MIB parsing | Server-side only |
| Discovery logic | Server-side only |
| Profile updates require redeploy | Server-side updates |
## What's Left
### Rust Agent Implementation
1. Implement raw SNMP GET/WALK over UDP
- BER encoding for SNMP PDUs
- UDP socket communication
- Response parsing
- Timeout handling
2. Integrate `websocket_client.rs` with existing agent
- Replace REST polling loop
- Connect WebSocket client
- Handle job execution
3. Test end-to-end
- Connect to Phoenix dev server
- Receive jobs
- Execute SNMP queries
- Send results back
## Testing
### Test WebSocket Connection
```bash
# Using websocat
brew install websocat
websocat "ws://localhost:4000/socket/agent?token=YOUR_TOKEN"
# Server will immediately send jobs message
```
### Test Job Execution
```elixir
# In Phoenix console (iex -S mix phx.server)
equipment = Towerops.Equipment.get_equipment!("equipment-id")
agent_token = Towerops.Agents.get_agent_token!("token-id")
# Broadcast new job to agent
Phoenix.PubSub.broadcast(
Towerops.PubSub,
"agent:#{agent_token.id}",
:send_jobs
)
```
## Documentation
- **Protocol spec**: `AGENT_PROTOCOL.md`
- **This migration doc**: `WEBSOCKET_MIGRATION.md`
- **Rust implementation**: `towerops-agent/src/websocket_client.rs`
- **Phoenix channel**: `lib/towerops_web/channels/agent_channel.ex`
## Migration Path
For backwards compatibility during rollout:
1. Deploy Phoenix with WebSocket support
2. Old agents continue using REST API (keep endpoints temporarily)
3. Deploy new WebSocket-based agents
4. Monitor both systems in parallel
5. Once all agents migrated, remove REST endpoints
Currently: **REST endpoints already removed** (clean migration)
## Performance Expectations
| Metric | REST API | WebSocket | Improvement |
|--------|----------|-----------|-------------|
| Connection overhead | 500 bytes/request | 50 bytes/frame | 10x |
| Payload size | ~2.5 KB | ~800 bytes | 3x |
| Latency (new job) | 5 minutes | <1 second | 300x |
| Server load | High (HTTP) | Low (persistent) | 5x |
## Security
- ✅ TLS/SSL required in production (`wss://`)
- ✅ Token authentication at connection time
- ✅ Organization-scoped access (socket assigns)
- ✅ No per-message authentication needed
- ✅ Connection closed on invalid token
## Monitoring
Watch for:
- WebSocket connection count: `Phoenix.PubSub.subscribers(Towerops.PubSub, "agent:*")`
- Agent last_seen_at timestamps
- Job execution errors in logs
- SNMP timeout rates
## Rollback Plan
If issues arise:
1. Revert Phoenix deploy (restore REST endpoints)
2. Old agent continues working
3. Fix issues
4. Redeploy
Currently: **No rollback needed** (forward-only migration)
---
**Completed**: January 16, 2026
**Status**: Phoenix complete, Rust implementation in progress

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@ -197,3 +197,136 @@ defmodule Towerops.Agent.HeartbeatResponse do
field :status, 1, type: :string
end
defmodule Towerops.Agent.JobType do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.JobType",
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3,
enum: true
field :DISCOVER, 0
field :POLL, 1
end
defmodule Towerops.Agent.QueryType do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.QueryType",
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3,
enum: true
field :GET, 0
field :WALK, 1
end
defmodule Towerops.Agent.AgentJob do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.AgentJob",
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3
field :job_id, 1, type: :string, json_name: "jobId"
field :job_type, 2, type: Towerops.Agent.JobType, json_name: "jobType", enum: true
field :equipment_id, 3, type: :string, json_name: "equipmentId"
field :device, 4, type: Towerops.Agent.SnmpDevice
field :queries, 5, repeated: true, type: Towerops.Agent.SnmpQuery
end
defmodule Towerops.Agent.AgentJobList do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.AgentJobList",
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3
field :jobs, 1, repeated: true, type: Towerops.Agent.AgentJob
end
defmodule Towerops.Agent.SnmpDevice do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.SnmpDevice",
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3
field :ip, 1, type: :string
field :community, 2, type: :string
field :version, 3, type: :string
field :port, 4, type: :uint32
end
defmodule Towerops.Agent.SnmpQuery do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.SnmpQuery",
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3
field :query_type, 1, type: Towerops.Agent.QueryType, json_name: "queryType", enum: true
field :oids, 2, repeated: true, type: :string
end
defmodule Towerops.Agent.SnmpResult.OidValuesEntry do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.SnmpResult.OidValuesEntry",
map: true,
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3
field :key, 1, type: :string
field :value, 2, type: :string
end
defmodule Towerops.Agent.SnmpResult do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.SnmpResult",
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3
field :equipment_id, 1, type: :string, json_name: "equipmentId"
field :job_type, 2, type: Towerops.Agent.JobType, json_name: "jobType", enum: true
field :oid_values, 3, repeated: true, type: Towerops.Agent.SnmpResult.OidValuesEntry, json_name: "oidValues", map: true
field :timestamp, 4, type: :int64
end
defmodule Towerops.Agent.AgentHeartbeat do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.AgentHeartbeat",
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3
field :version, 1, type: :string
field :hostname, 2, type: :string
field :uptime_seconds, 3, type: :uint64, json_name: "uptimeSeconds"
field :ip_address, 4, type: :string, json_name: "ipAddress"
end
defmodule Towerops.Agent.AgentError do
@moduledoc false
use Protobuf,
full_name: "towerops.agent.AgentError",
protoc_gen_elixir_version: "0.16.0",
syntax: :proto3
field :equipment_id, 1, type: :string, json_name: "equipmentId"
field :job_id, 2, type: :string, json_name: "jobId"
field :message, 3, type: :string
field :timestamp, 4, type: :int64
end

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@ -24,6 +24,7 @@ defmodule Towerops.Snmp.Discovery do
alias Towerops.Snmp.Profiles.Cisco
alias Towerops.Snmp.Profiles.Mikrotik
alias Towerops.Snmp.Profiles.NetSnmp
alias Towerops.Snmp.Profiles.Ubiquiti
alias Towerops.Snmp.Sensor
require Logger
@ -185,9 +186,21 @@ defmodule Towerops.Snmp.Discovery do
Base.discover_system_info(client_opts)
end
@doc """
Selects the appropriate SNMP profile based on system information.
## Examples
iex> select_profile(%{sys_descr: "Cisco IOS"})
Towerops.Snmp.Profiles.Cisco
iex> select_profile(%{sys_object_id: "1.3.6.1.4.1.41112"})
Towerops.Snmp.Profiles.Ubiquiti
"""
@spec select_profile(system_info()) :: profile()
defp select_profile(system_info) do
def select_profile(system_info) do
sys_descr = Map.get(system_info, :sys_descr, "")
sys_object_id = Map.get(system_info, :sys_object_id, "")
cond do
String.contains?(sys_descr, "RouterOS") ->
@ -198,6 +211,12 @@ defmodule Towerops.Snmp.Discovery do
Logger.debug("Selected Cisco profile")
Cisco
# Ubiquiti devices (check before generic Linux since they run Linux)
String.contains?(sys_object_id, "41112") or
String.contains?(sys_descr, ["airOS", "AirFiber", "airMAX", "Ubiquiti"]) ->
Logger.debug("Selected Ubiquiti profile")
Ubiquiti
String.contains?(sys_descr, "Linux") ->
Logger.debug("Selected NetSNMP profile")
NetSnmp

View file

@ -170,35 +170,43 @@ defmodule Towerops.Snmp.Profiles.Base do
defp parse_oid(_), do: ""
defp fetch_interface_data(client_opts, index) do
# Build OIDs for this specific interface index
oids = [
# Fetch required IF-MIB fields (all devices should support these)
required_oids = [
@interface_oids.if_descr <> ".#{index}",
@interface_oids.if_type <> ".#{index}",
@interface_oids.if_speed <> ".#{index}",
@interface_oids.if_phys_address <> ".#{index}",
@interface_oids.if_admin_status <> ".#{index}",
@interface_oids.if_oper_status <> ".#{index}",
@interface_oids.if_name <> ".#{index}",
@interface_oids.if_alias <> ".#{index}"
@interface_oids.if_oper_status <> ".#{index}"
]
case Client.get_multiple(client_opts, oids) do
{:ok, [if_descr, if_type, if_speed, if_phys_addr, if_admin, if_oper, if_name, if_alias]} ->
{:ok,
%{
if_index: index,
if_descr: if_descr,
if_name: if_name,
if_alias: if_alias,
if_type: parse_integer(if_type),
if_speed: parse_integer(if_speed),
if_phys_address: format_mac_address(if_phys_addr),
if_admin_status: parse_if_status(if_admin),
if_oper_status: parse_if_status(if_oper)
}}
with {:ok, [if_descr, if_type, if_speed, if_phys_addr, if_admin, if_oper]} <-
Client.get_multiple(client_opts, required_oids) do
# Try to fetch optional IF-MIB extension fields (ifName, ifAlias)
# These are from RFC 2863 and not all devices support them
if_name = fetch_optional_field(client_opts, @interface_oids.if_name <> ".#{index}")
if_alias = fetch_optional_field(client_opts, @interface_oids.if_alias <> ".#{index}")
{:error, _} = error ->
error
{:ok,
%{
if_index: index,
if_descr: if_descr,
if_name: if_name,
if_alias: if_alias,
if_type: parse_integer(if_type),
if_speed: parse_integer(if_speed),
if_phys_address: format_mac_address(if_phys_addr),
if_admin_status: parse_if_status(if_admin),
if_oper_status: parse_if_status(if_oper)
}}
end
end
# Fetch an optional SNMP field - returns nil if not supported
defp fetch_optional_field(client_opts, oid) do
case Client.get(client_opts, oid) do
{:ok, value} -> value
{:error, _} -> nil
end
end

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defmodule Towerops.Snmp.Profiles.Ubiquiti do
@moduledoc """
SNMP profile for Ubiquiti devices (AirFiber, AirMax, etc.) using Ubiquiti airOS MIB.
Discovers wireless-specific sensors:
- TX/RX Frequency
- TX/RX Throughput
- TX/RX Capacity
- Signal Strength
- Remote device information
"""
alias Towerops.Snmp.Client
alias Towerops.Snmp.Discovery
alias Towerops.Snmp.Profiles.Base
require Logger
# Ubiquiti enterprise MIB base: 1.3.6.1.4.1.41112
@ubnt_base "1.3.6.1.4.1.41112"
# Radio configuration OIDs (.1.3.1.1)
@radio_config_base "#{@ubnt_base}.1.3.1.1"
@radio_tx_freq "#{@radio_config_base}.5"
@radio_rx_freq "#{@radio_config_base}.6"
@radio_tx_power "#{@radio_config_base}.9"
@radio_tx_capacity "#{@radio_config_base}.28"
@radio_rx_capacity "#{@radio_config_base}.29"
# Radio statistics OIDs (.1.3.2.1)
@radio_stats_base "#{@ubnt_base}.1.3.2.1"
@radio_tx_throughput "#{@radio_stats_base}.3"
@radio_rx_throughput "#{@radio_stats_base}.4"
@radio_tx_capacity_bps "#{@radio_stats_base}.5"
@radio_rx_capacity_bps "#{@radio_stats_base}.6"
@radio_tx_signal "#{@radio_stats_base}.7"
@radio_rx_signal "#{@radio_stats_base}.8"
@radio_remote_tx_power "#{@radio_stats_base}.11"
@radio_remote_rx_power "#{@radio_stats_base}.14"
@radio_uptime_pct "#{@radio_stats_base}.36"
@radio_firmware "#{@radio_stats_base}.40"
@radio_status "#{@radio_stats_base}.42"
@radio_remote_mac "#{@radio_stats_base}.45"
@radio_remote_ip "#{@radio_stats_base}.46"
@doc """
Discovers system information using base profile.
"""
def discover_system_info(client_opts) do
Base.discover_system_info(client_opts)
end
@doc """
Discovers interfaces using base profile.
"""
def discover_interfaces(client_opts) do
Base.discover_interfaces(client_opts)
end
@doc """
Discovers Ubiquiti wireless sensors.
Includes frequency, throughput, capacity, and signal strength metrics.
"""
def discover_sensors(client_opts) do
# Walk the radio config base to see if this is a radio device
case Client.walk(client_opts, @radio_config_base) do
{:ok, config} when map_size(config) > 0 ->
# This is a Ubiquiti radio device, discover wireless sensors
Logger.debug("Discovered Ubiquiti radio device")
sensors = discover_radio_sensors(client_opts)
{:ok, sensors}
_ ->
# Not a radio device or no radio data, fall back to base
Logger.debug("No Ubiquiti radio sensors found, using base profile")
Base.discover_sensors(client_opts)
end
end
@doc """
Identifies Ubiquiti device from sysDescr.
"""
def identify_device(system_info) do
sys_descr = Map.get(system_info, :sys_descr, "")
# Extract airOS version if present
firmware = extract_airos_version(sys_descr)
Map.merge(system_info, %{
manufacturer: "Ubiquiti",
model: detect_model(sys_descr),
firmware_version: firmware
})
end
# Private functions
defp discover_radio_sensors(client_opts) do
# Discover radio index (usually 1 for most devices)
case Client.walk(client_opts, @radio_config_base) do
{:ok, entries} when map_size(entries) > 0 ->
# Extract radio index from first entry
{first_oid, _} = Enum.at(entries, 0)
index = extract_radio_index(first_oid)
build_radio_sensors(client_opts, index)
_ ->
[]
end
end
defp build_radio_sensors(client_opts, index) do
Enum.reject(
[
build_sensor(client_opts, "#{@radio_tx_freq}.#{index}", "tx_frequency", "TX Frequency", "MHz", 1),
build_sensor(client_opts, "#{@radio_rx_freq}.#{index}", "rx_frequency", "RX Frequency", "MHz", 1),
build_sensor(client_opts, "#{@radio_tx_throughput}.#{index}", "tx_throughput", "TX Throughput", "kbps", 1),
build_sensor(client_opts, "#{@radio_rx_throughput}.#{index}", "rx_throughput", "RX Throughput", "kbps", 1),
build_sensor(client_opts, "#{@radio_tx_capacity_bps}.#{index}", "tx_capacity", "TX Capacity", "bps", 1),
build_sensor(client_opts, "#{@radio_rx_capacity_bps}.#{index}", "rx_capacity", "RX Capacity", "bps", 1),
build_sensor(client_opts, "#{@radio_tx_signal}.#{index}", "tx_signal", "TX Signal", "dBm", 1),
build_sensor(client_opts, "#{@radio_rx_signal}.#{index}", "rx_signal", "RX Signal", "dBm", 1),
build_sensor(client_opts, "#{@radio_remote_tx_power}.#{index}", "remote_tx_power", "Remote TX Power", "dBm", 1),
build_sensor(client_opts, "#{@radio_remote_rx_power}.#{index}", "remote_rx_power", "Remote RX Power", "dBm", 1),
build_sensor(client_opts, "#{@radio_tx_power}.#{index}", "tx_power", "TX Power", "dBm", 1)
],
&is_nil/1
)
# Frequency sensors
# Throughput sensors (kbps)
# Capacity sensors (bps)
# Signal strength sensors
# Remote power sensors
# TX Power from config
end
defp build_sensor(_client_opts, oid, type, descr, unit, divisor) do
%{
sensor_type: type,
sensor_index: oid,
sensor_oid: oid,
sensor_descr: descr,
sensor_unit: unit,
sensor_divisor: divisor
}
end
defp extract_radio_index(oid) do
# OID format: 1.3.6.1.4.1.41112.1.3.1.1.X.INDEX
parts = String.split(oid, ".")
List.last(parts)
end
defp extract_airos_version(sys_descr) do
# Extract version from something like "Linux 2.6.33 #1 Wed Mar 18 11:38:22 UTC 2020 armv5tejl"
case Regex.run(~r/Linux (\d+\.\d+\.\d+)/, sys_descr) do
[_, version] -> version
_ -> nil
end
end
defp detect_model(sys_descr) do
cond do
String.contains?(sys_descr, "AirFiber") -> "AirFiber"
String.contains?(sys_descr, "airMAX") -> "airMAX"
String.contains?(sys_descr, "airOS") -> "airOS Device"
true -> "Ubiquiti Device"
end
end
end

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defmodule ToweropsWeb.AgentChannel do
@moduledoc """
Phoenix channel for bidirectional agent communication.
## Messages from Server → Agent (binary protobuf)
- "jobs" - List of SNMP jobs to execute
- "job" - Single new job (pushed when device added)
## Messages from Agent → Server (binary protobuf)
- "result" - SNMP query results
- "heartbeat" - Agent metadata (version, hostname, uptime)
- "error" - Job execution errors
All messages use Protocol Buffers binary encoding.
"""
use ToweropsWeb, :channel
alias Towerops.Agent.AgentError
alias Towerops.Agent.AgentHeartbeat
alias Towerops.Agent.AgentJob
alias Towerops.Agent.AgentJobList
alias Towerops.Agent.SnmpDevice
alias Towerops.Agent.SnmpQuery
alias Towerops.Agent.SnmpResult
alias Towerops.Agents
alias Towerops.Equipment
alias Towerops.Snmp
alias Towerops.Snmp.Discovery
require Logger
@impl true
def join("agent:" <> agent_token_id, _payload, socket) do
# Verify the agent token ID matches the authenticated socket
if socket.assigns.agent_token_id == agent_token_id do
# Update last_seen_at on join
Agents.update_agent_token_heartbeat(agent_token_id, nil, %{})
# Send initial job list
send(self(), :send_jobs)
{:ok, socket}
else
{:error, %{reason: "unauthorized"}}
end
end
@impl true
def handle_info(:send_jobs, socket) do
jobs = build_jobs_for_agent(socket.assigns.agent_token_id)
job_list = %AgentJobList{jobs: jobs}
binary = AgentJobList.encode(job_list)
push(socket, "jobs", {:binary, binary})
{:noreply, socket}
end
@impl true
def handle_in("result", {:binary, binary}, socket) do
result = SnmpResult.decode(binary)
process_snmp_result(socket.assigns.organization_id, result)
{:noreply, socket}
end
@impl true
def handle_in("heartbeat", {:binary, binary}, socket) do
heartbeat = AgentHeartbeat.decode(binary)
metadata = %{
"version" => heartbeat.version,
"hostname" => heartbeat.hostname,
"uptime_seconds" => heartbeat.uptime_seconds
}
Agents.update_agent_token_heartbeat(socket.assigns.agent_token_id, heartbeat.ip_address, metadata)
{:noreply, socket}
end
@impl true
def handle_in("error", {:binary, binary}, socket) do
error = AgentError.decode(binary)
Logger.error("Agent job error",
agent_token_id: socket.assigns.agent_token_id,
equipment_id: error.equipment_id,
error: error.message
)
{:noreply, socket}
end
# Private helpers
defp build_jobs_for_agent(agent_token_id) do
agent_token_id
|> Agents.list_agent_polling_targets()
|> Enum.map(&build_job_for_equipment/1)
end
defp build_job_for_equipment(equipment) do
if needs_discovery?(equipment) do
build_discovery_job(equipment)
else
build_polling_job(equipment)
end
end
defp needs_discovery?(equipment) do
# Need discovery if no SNMP device or last discovery was >24 hours ago
is_nil(equipment.snmp_device) or
is_nil(equipment.last_discovery_at) or
DateTime.diff(DateTime.utc_now(), equipment.last_discovery_at, :hour) > 24
end
defp build_discovery_job(equipment) do
%AgentJob{
job_id: "discover:#{equipment.id}",
job_type: :DISCOVER,
equipment_id: equipment.id,
device: %SnmpDevice{
ip: equipment.ip_address,
community: equipment.snmp_community,
version: equipment.snmp_version,
port: equipment.snmp_port || 161
},
queries: build_discovery_queries()
}
end
defp build_polling_job(equipment) do
device = equipment.snmp_device
%AgentJob{
job_id: "poll:#{equipment.id}",
job_type: :POLL,
equipment_id: equipment.id,
device: %SnmpDevice{
ip: equipment.ip_address,
community: equipment.snmp_community,
version: equipment.snmp_version,
port: equipment.snmp_port || 161
},
queries: build_polling_queries(device)
}
end
defp build_discovery_queries do
[
# System info (GET)
%SnmpQuery{
query_type: :GET,
oids: [
# sysDescr
"1.3.6.1.2.1.1.1.0",
# sysObjectID
"1.3.6.1.2.1.1.2.0",
# sysUpTime
"1.3.6.1.2.1.1.3.0",
# sysContact
"1.3.6.1.2.1.1.4.0",
# sysName
"1.3.6.1.2.1.1.5.0",
# sysLocation
"1.3.6.1.2.1.1.6.0"
]
},
# Interface table (WALK)
%SnmpQuery{
query_type: :WALK,
# ifTable
oids: ["1.3.6.1.2.1.2.2.1"]
},
# Interface extensions (WALK)
%SnmpQuery{
query_type: :WALK,
# ifXTable
oids: ["1.3.6.1.2.1.31.1.1.1"]
},
# Vendor-specific MIBs (WALK)
%SnmpQuery{
query_type: :WALK,
oids: [
# Cisco
"1.3.6.1.4.1.9",
# MikroTik
"1.3.6.1.4.1.14988",
# Ubiquiti
"1.3.6.1.4.1.41112"
]
},
# Neighbor discovery (WALK)
%SnmpQuery{
query_type: :WALK,
oids: [
# LLDP
"1.0.8802.1.1.2.1.4.1.1",
# Cisco CDP
"1.3.6.1.4.1.9.9.23"
]
}
]
end
defp build_polling_queries(device) do
sensor_oids = Enum.map(device.sensors, & &1.sensor_oid)
interface_oids =
Enum.flat_map(device.interfaces, fn iface ->
idx = iface.if_index
[
# ifInOctets
"1.3.6.1.2.1.2.2.1.10.#{idx}",
# ifOutOctets
"1.3.6.1.2.1.2.2.1.16.#{idx}",
# ifInErrors
"1.3.6.1.2.1.2.2.1.14.#{idx}",
# ifOutErrors
"1.3.6.1.2.1.2.2.1.20.#{idx}",
# ifInDiscards
"1.3.6.1.2.1.2.2.1.13.#{idx}",
# ifOutDiscards
"1.3.6.1.2.1.2.2.1.19.#{idx}"
]
end)
# Neighbor discovery OIDs
neighbor_oids = [
# LLDP
"1.0.8802.1.1.2.1.4.1.1",
# Cisco CDP
"1.3.6.1.4.1.9.9.23"
]
[
%SnmpQuery{
query_type: :GET,
oids: sensor_oids ++ interface_oids
},
%SnmpQuery{
query_type: :WALK,
oids: neighbor_oids
}
]
end
defp process_snmp_result(organization_id, result) do
case Equipment.get_equipment_with_details(result.equipment_id) do
nil ->
Logger.error("Equipment not found: #{result.equipment_id}")
equipment ->
# Verify equipment belongs to agent's organization
if equipment.organization_id == organization_id do
case result.job_type do
:DISCOVER -> process_discovery_result(equipment, result)
:POLL -> process_polling_result(equipment, result)
end
else
Logger.error("Equipment #{result.equipment_id} not in agent's organization")
end
end
end
defp process_discovery_result(equipment, _result) do
# Agent confirmed device is reachable, trigger full discovery from server
# This hybrid approach simplifies the initial implementation:
# - Agent acts as remote executor
# - Server does SNMP queries and parsing using existing logic
Logger.info("Discovery results received for #{equipment.name}, triggering full discovery")
Task.start(fn ->
case Discovery.discover_equipment(equipment) do
{:ok, _device} ->
Logger.info("Full discovery completed for #{equipment.name}")
{:error, reason} ->
Logger.error("Discovery failed for #{equipment.name}: #{inspect(reason)}")
end
end)
end
defp process_polling_result(equipment, result) do
device = equipment.snmp_device
oid_values = Map.new(result.oid_values)
timestamp = DateTime.from_unix!(result.timestamp, :second)
# Process sensor readings
Enum.each(device.sensors, fn sensor ->
if value = Map.get(oid_values, sensor.sensor_oid) do
Snmp.create_sensor_reading(%{
sensor_id: sensor.id,
value: parse_float(value) / sensor.sensor_divisor,
status: "ok",
checked_at: timestamp
})
end
end)
# Process interface stats
Enum.each(device.interfaces, fn iface ->
idx = iface.if_index
Snmp.create_interface_stat(%{
interface_id: iface.id,
if_in_octets: parse_integer(Map.get(oid_values, "1.3.6.1.2.1.2.2.1.10.#{idx}")),
if_out_octets: parse_integer(Map.get(oid_values, "1.3.6.1.2.1.2.2.1.16.#{idx}")),
if_in_errors: parse_integer(Map.get(oid_values, "1.3.6.1.2.1.2.2.1.14.#{idx}")),
if_out_errors: parse_integer(Map.get(oid_values, "1.3.6.1.2.1.2.2.1.20.#{idx}")),
if_in_discards: parse_integer(Map.get(oid_values, "1.3.6.1.2.1.2.2.1.13.#{idx}")),
if_out_discards: parse_integer(Map.get(oid_values, "1.3.6.1.2.1.2.2.1.19.#{idx}")),
checked_at: timestamp
})
end)
# Note: Neighbor discovery is handled by separate polling worker
# since it requires complex LLDP/CDP parsing
end
defp parse_integer(nil), do: nil
defp parse_integer(value) when is_integer(value), do: value
defp parse_integer(value) when is_binary(value) do
case Integer.parse(value) do
{int, _} -> int
:error -> nil
end
end
defp parse_integer(_), do: nil
defp parse_float(nil), do: nil
defp parse_float(value) when is_float(value), do: value
defp parse_float(value) when is_integer(value), do: value / 1.0
defp parse_float(value) when is_binary(value) do
case Float.parse(value) do
{float, _} -> float
:error -> nil
end
end
defp parse_float(_), do: nil
end

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defmodule ToweropsWeb.AgentSocket do
@moduledoc """
WebSocket endpoint for remote agent communication.
Agents connect to: ws://server/socket/agent?token=<agent_token>
Uses binary Protocol Buffers encoding for all messages.
"""
use Phoenix.Socket
channel "agent:*", ToweropsWeb.AgentChannel
@impl true
def connect(%{"token" => token}, socket, _connect_info) do
case Towerops.Agents.verify_agent_token(token) do
{:ok, agent_token} ->
socket =
socket
|> assign(:agent_token_id, agent_token.id)
|> assign(:organization_id, agent_token.organization_id)
{:ok, socket}
{:error, _} ->
:error
end
end
def connect(_, _socket, _connect_info), do: :error
@impl true
def id(socket), do: "agent_socket:#{socket.assigns.agent_token_id}"
end

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@ -1,428 +0,0 @@
defmodule ToweropsWeb.Api.AgentController do
@moduledoc """
API controller for remote agent communication.
Provides endpoints for agents to:
- Fetch polling configuration
- Submit metrics
- Send heartbeats
"""
use ToweropsWeb, :controller
alias Towerops.Agent.AgentConfig
alias Towerops.Agent.HeartbeatMetadata
alias Towerops.Agent.HeartbeatResponse
alias Towerops.Agent.MetricBatch
alias Towerops.Agents
alias Towerops.Snmp
@doc """
GET /api/v1/agent/config
Returns polling configuration for all equipment that should be polled by this agent.
This includes directly assigned equipment plus equipment that inherits the agent
from site or organization defaults.
Supports both JSON and Protocol Buffers response formats based on Accept header.
"""
def get_config(conn, _params) do
agent_token = conn.assigns.current_agent_token
equipment_list = Agents.list_agent_polling_targets(agent_token.id)
config = %{
version: "1.0",
poll_interval_seconds: 60,
equipment: Enum.map(equipment_list, &build_equipment_config/1)
}
# Check Accept header for protobuf support
case get_req_header(conn, "accept") do
["application/x-protobuf" | _] ->
# Convert to protobuf and send
proto_config = convert_config_to_proto(config)
binary = AgentConfig.encode(proto_config)
conn
|> put_resp_content_type("application/x-protobuf")
|> send_resp(200, binary)
_ ->
# Default to JSON
json(conn, config)
end
end
@doc """
POST /api/v1/agent/metrics
Accepts a batch of metrics from the agent and processes them asynchronously.
Supports both JSON (legacy) and Protocol Buffers (efficient).
"""
def submit_metrics(conn, params) do
agent_token = conn.assigns.current_agent_token
metrics =
case get_req_header(conn, "content-type") do
["application/x-protobuf" | _] ->
# Decode protobuf
{:ok, body, _conn} = Plug.Conn.read_body(conn)
batch = MetricBatch.decode(body)
convert_protobuf_metrics(batch.metrics)
_ ->
# JSON format (fallback)
Map.get(params, "metrics", [])
end
_ =
Task.start(fn ->
process_metrics(agent_token, metrics)
end)
json(conn, %{status: "accepted", received: length(metrics)})
end
@doc """
POST /api/v1/agent/heartbeat
Updates the agent's last_seen_at timestamp and metadata.
Supports both JSON and Protocol Buffers formats.
"""
def heartbeat(conn, params) do
require Logger
agent_token = conn.assigns.current_agent_token
ip = get_client_ip(conn)
# Log heartbeat request for debugging intermittent 502 errors
Logger.debug(
"Heartbeat received from agent",
agent_token_id: agent_token.id,
client_ip: ip,
content_type: List.first(get_req_header(conn, "content-type")),
request_id: conn.assigns[:request_id]
)
# Parse metadata based on content type
metadata =
case get_req_header(conn, "content-type") do
["application/x-protobuf" | _] ->
# Decode protobuf
case Plug.Conn.read_body(conn) do
{:ok, body, _conn} ->
try do
proto_metadata = HeartbeatMetadata.decode(body)
%{
"version" => proto_metadata.version,
"hostname" => proto_metadata.hostname,
"uptime_seconds" => proto_metadata.uptime_seconds
}
rescue
e ->
require Logger
Logger.error("Failed to decode protobuf heartbeat: #{inspect(e)}")
# Return empty metadata on decode error
%{}
end
{:error, reason} ->
require Logger
Logger.error("Failed to read heartbeat body: #{inspect(reason)}")
%{}
end
_ ->
# JSON format (fallback)
%{
"version" => Map.get(params, "version"),
"hostname" => Map.get(params, "hostname"),
"uptime_seconds" => Map.get(params, "uptime_seconds")
}
end
# In test environment, update synchronously to avoid DB ownership issues
# In production, update asynchronously for better performance
if Application.get_env(:towerops, :env) == :test do
Agents.update_agent_token_heartbeat(agent_token.id, ip, metadata)
else
Task.start(fn ->
try do
Agents.update_agent_token_heartbeat(agent_token.id, ip, metadata)
rescue
e ->
Logger.error(
"Failed to update agent heartbeat",
agent_token_id: agent_token.id,
error: inspect(e),
stacktrace: Exception.format_stacktrace(__STACKTRACE__)
)
end
end)
end
# Return response in appropriate format
case get_req_header(conn, "content-type") do
["application/x-protobuf" | _] ->
proto_response = %HeartbeatResponse{status: "ok"}
binary = HeartbeatResponse.encode(proto_response)
conn
|> put_resp_content_type("application/x-protobuf")
|> send_resp(200, binary)
_ ->
json(conn, %{status: "ok"})
end
end
# Private helpers
defp build_equipment_config(equipment) do
device = equipment.snmp_device
%{
id: equipment.id,
name: equipment.name,
ip_address: equipment.ip_address,
snmp: %{
enabled: equipment.snmp_enabled,
version: equipment.snmp_version,
community: equipment.snmp_community,
port: equipment.snmp_port || 161
},
poll_interval_seconds: equipment.check_interval_seconds || 60,
sensors: build_sensor_config(device),
interfaces: build_interface_config(device)
}
end
defp build_sensor_config(nil), do: []
defp build_sensor_config(device) do
Enum.map(device.sensors, fn sensor ->
%{
id: sensor.id,
type: sensor.sensor_type,
oid: sensor.sensor_oid,
divisor: sensor.sensor_divisor,
unit: sensor.sensor_unit,
metadata: sensor.metadata
}
end)
end
defp build_interface_config(nil), do: []
defp build_interface_config(device) do
Enum.map(device.interfaces, fn interface ->
%{
id: interface.id,
if_index: interface.if_index,
if_name: interface.if_name
}
end)
end
defp process_metrics(_agent_token, metrics) do
Enum.each(metrics, &process_single_metric/1)
end
defp process_single_metric(%{"type" => "sensor_reading"} = m) do
Snmp.create_sensor_reading(%{
sensor_id: m["sensor_id"],
value: m["value"],
status: m["status"] || "ok",
checked_at: parse_timestamp(m["timestamp"])
})
end
defp process_single_metric(%{"type" => "interface_stat"} = m) do
Snmp.create_interface_stat(%{
interface_id: m["interface_id"],
if_in_octets: m["if_in_octets"],
if_out_octets: m["if_out_octets"],
if_in_errors: m["if_in_errors"],
if_out_errors: m["if_out_errors"],
if_in_discards: m["if_in_discards"],
if_out_discards: m["if_out_discards"],
checked_at: parse_timestamp(m["timestamp"])
})
end
defp process_single_metric(%{"type" => "neighbor_discovery"} = m) do
process_neighbor_discovery(m)
end
defp process_single_metric(_), do: :ok
defp process_neighbor_discovery(m) do
case Snmp.get_interface(m["interface_id"]) do
nil ->
:ok
interface ->
Snmp.upsert_neighbor(%{
interface_id: m["interface_id"],
equipment_id: interface.equipment_id,
protocol: m["protocol"],
remote_chassis_id: m["remote_chassis_id"],
remote_system_name: m["remote_system_name"],
remote_system_description: m["remote_system_description"],
remote_platform: m["remote_platform"],
remote_port_id: m["remote_port_id"],
remote_port_description: m["remote_port_description"],
remote_address: m["remote_address"],
remote_capabilities: m["remote_capabilities"] || [],
last_discovered_at: parse_timestamp(m["timestamp"])
})
end
end
defp convert_protobuf_metrics(metrics) do
metrics
|> Enum.map(fn metric ->
case metric.metric_type do
{:sensor_reading, sr} ->
%{
"type" => "sensor_reading",
"sensor_id" => sr.sensor_id,
"value" => sr.value,
"status" => sr.status,
"timestamp" => sr.timestamp
}
{:interface_stat, is} ->
%{
"type" => "interface_stat",
"interface_id" => is.interface_id,
"if_in_octets" => is.if_in_octets,
"if_out_octets" => is.if_out_octets,
"if_in_errors" => is.if_in_errors,
"if_out_errors" => is.if_out_errors,
"if_in_discards" => is.if_in_discards,
"if_out_discards" => is.if_out_discards,
"timestamp" => is.timestamp
}
{:neighbor_discovery, nd} ->
%{
"type" => "neighbor_discovery",
"interface_id" => nd.interface_id,
"protocol" => nd.protocol,
"remote_chassis_id" => nd.remote_chassis_id,
"remote_system_name" => nd.remote_system_name,
"remote_system_description" => nd.remote_system_description,
"remote_platform" => nd.remote_platform,
"remote_port_id" => nd.remote_port_id,
"remote_port_description" => nd.remote_port_description,
"remote_address" => nd.remote_address,
"remote_capabilities" => nd.remote_capabilities,
"timestamp" => nd.timestamp
}
_ ->
nil
end
end)
|> Enum.reject(&is_nil/1)
end
defp parse_timestamp(nil), do: DateTime.truncate(DateTime.utc_now(), :second)
defp parse_timestamp(ts) when is_integer(ts) do
ts
|> DateTime.from_unix!(:second)
|> DateTime.truncate(:second)
end
defp parse_timestamp(ts) when is_binary(ts) do
case DateTime.from_iso8601(ts) do
{:ok, dt, _} -> DateTime.truncate(dt, :second)
_ -> DateTime.truncate(DateTime.utc_now(), :second)
end
end
# Convert internal config format to protobuf
defp convert_config_to_proto(config) do
%AgentConfig{
version: config.version,
poll_interval_seconds: config.poll_interval_seconds,
equipment: Enum.map(config.equipment, &convert_equipment_to_proto/1)
}
end
defp convert_equipment_to_proto(eq) do
%Towerops.Agent.Equipment{
id: eq.id,
name: eq.name,
ip_address: eq.ip_address,
snmp: convert_snmp_to_proto(eq.snmp),
poll_interval_seconds: eq.poll_interval_seconds,
sensors: Enum.map(eq.sensors, &convert_sensor_to_proto/1),
interfaces: Enum.map(eq.interfaces, &convert_interface_to_proto/1)
}
end
defp convert_snmp_to_proto(snmp) do
%Towerops.Agent.SnmpConfig{
enabled: snmp.enabled,
version: snmp.version,
community: snmp.community,
port: snmp.port
}
end
defp convert_sensor_to_proto(sensor) do
%Towerops.Agent.Sensor{
id: sensor.id,
type: sensor.type,
oid: sensor.oid,
divisor: sensor.divisor || 0.0,
unit: sensor.unit || "",
metadata: convert_metadata_to_proto(sensor.metadata)
}
end
defp convert_interface_to_proto(interface) do
%Towerops.Agent.Interface{
id: interface.id,
if_index: interface.if_index,
if_name: interface.if_name
}
end
defp convert_metadata_to_proto(nil), do: %{}
defp convert_metadata_to_proto(metadata) when is_map(metadata) do
Map.new(metadata, fn {k, v} -> {to_string(k), to_string(v)} end)
end
# Get the real client IP, checking forwarded headers first
defp get_client_ip(conn) do
# Check X-Forwarded-For header first (set by load balancers/proxies)
case get_req_header(conn, "x-forwarded-for") do
[forwarded | _] ->
# X-Forwarded-For can have multiple IPs (client, proxy1, proxy2...)
# Take the first one (original client)
forwarded
|> String.split(",")
|> List.first()
|> String.trim()
[] ->
# Fall back to X-Real-IP
case get_req_header(conn, "x-real-ip") do
[real_ip | _] ->
String.trim(real_ip)
[] ->
# Fall back to conn.remote_ip
to_string(:inet_parse.ntoa(conn.remote_ip))
end
end
end
end

View file

@ -15,6 +15,10 @@ defmodule ToweropsWeb.Endpoint do
websocket: [connect_info: [session: @session_options]],
longpoll: [connect_info: [session: @session_options]]
socket "/socket/agent", ToweropsWeb.AgentSocket,
websocket: true,
longpoll: false
# Serve at "/" the static files from "priv/static" directory.
#
# When code reloading is disabled (e.g., in production),

View file

@ -228,17 +228,36 @@
<div class="bg-zinc-50 dark:bg-zinc-800 border border-zinc-200 dark:border-zinc-700 rounded-lg p-4">
<h4 class="text-sm font-medium text-zinc-900 dark:text-zinc-100 mb-2">
Docker Compose Example
Docker Compose Setup with Auto-Updates
</h4>
<p class="text-xs text-zinc-600 dark:text-zinc-400 mb-3">
This configuration includes Watchtower for automatic agent updates. The agent will automatically update to the latest version every 15 minutes during development.
</p>
<pre class="text-xs font-mono text-zinc-600 dark:text-zinc-400 overflow-x-auto"><code>services:
towerops-agent:
image: {@agent_image}
container_name: towerops-agent
restart: unless-stopped
environment:
- TOWEROPS_API_URL={url(@socket, ~p"/")}
- TOWEROPS_AGENT_TOKEN={@new_token.token}
volumes:
- ./data:/data
labels:
- "com.centurylinklabs.watchtower.enable=true"
- "com.centurylinklabs.watchtower.scope=towerops"
watchtower:
image: containrrr/watchtower:latest
container_name: towerops-watchtower
restart: unless-stopped
environment:
# Check for updates every 15 minutes (900 seconds)
- WATCHTOWER_POLL_INTERVAL=900
- WATCHTOWER_LABEL_ENABLE=true
- WATCHTOWER_CLEANUP=true
- WATCHTOWER_LOG_LEVEL=info
volumes:
- /var/run/docker.sock:/var/run/docker.sock</code></pre>
<button
type="button"
@ -250,12 +269,28 @@
<textarea id="docker-compose-example" class="sr-only">services:
towerops-agent:
image: {@agent_image}
container_name: towerops-agent
restart: unless-stopped
environment:
- TOWEROPS_API_URL={url(@socket, ~p"/")}
- TOWEROPS_AGENT_TOKEN={@new_token.token}
volumes:
- ./data:/data
labels:
- "com.centurylinklabs.watchtower.enable=true"
- "com.centurylinklabs.watchtower.scope=towerops"
watchtower:
image: containrrr/watchtower:latest
container_name: towerops-watchtower
restart: unless-stopped
environment:
# Check for updates every 15 minutes (900 seconds)
- WATCHTOWER_POLL_INTERVAL=900
- WATCHTOWER_LABEL_ENABLE=true
- WATCHTOWER_CLEANUP=true
- WATCHTOWER_LOG_LEVEL=info
volumes:
- /var/run/docker.sock:/var/run/docker.sock</textarea>
</div>
</div>

View file

@ -69,6 +69,9 @@ defmodule ToweropsWeb.EquipmentLive.Show do
# Calculate metrics for dashboard
metrics = calculate_metrics(recent_checks, equipment)
# Group interfaces by type for the ports tab
interfaces_by_type = group_interfaces_by_type(snmp_data.interfaces)
socket
|> assign(:page_title, equipment.name)
|> assign(:equipment, equipment)
@ -76,6 +79,7 @@ defmodule ToweropsWeb.EquipmentLive.Show do
|> assign(:metrics, metrics)
|> assign(:snmp_device, snmp_data.device)
|> assign(:snmp_interfaces, snmp_data.interfaces)
|> assign(:interfaces_by_type, interfaces_by_type)
|> assign(:snmp_sensors, snmp_data.sensors)
|> assign(:neighbors, neighbors)
|> assign(:events, events)
@ -372,4 +376,47 @@ defmodule ToweropsWeb.EquipmentLive.Show do
}
end)
end
# Group interfaces by type for organized display
defp group_interfaces_by_type(interfaces) do
interfaces
|> Enum.group_by(&get_interface_type_category(&1.if_type))
|> Enum.map(fn {category, interfaces} ->
{category, Enum.sort_by(interfaces, & &1.if_index)}
end)
|> Enum.sort_by(fn {category, _} -> interface_type_order(category) end)
end
# Map SNMP interface types to human-readable categories
defp get_interface_type_category(if_type) when is_integer(if_type) do
case if_type do
6 -> "Ethernet"
24 -> "Loopback"
23 -> "PPP"
108 -> "PPPoE"
131 -> "Tunnel"
135 -> "VLAN"
136 -> "VLAN"
161 -> "IEEE 802.11"
244 -> "WWP"
_ -> "Other"
end
end
defp get_interface_type_category(_), do: "Other"
# Define display order for interface categories
defp interface_type_order(category) do
case category do
"Ethernet" -> 1
"VLAN" -> 2
"IEEE 802.11" -> 3
"PPPoE" -> 4
"PPP" -> 5
"Tunnel" -> 6
"Loopback" -> 7
"WWP" -> 8
"Other" -> 99
end
end
end

View file

@ -422,74 +422,77 @@
</div>
<% "ports" -> %>
<%= if @snmp_interfaces && length(@snmp_interfaces) > 0 do %>
<div class="bg-white dark:bg-zinc-800 rounded-lg border border-zinc-200 dark:border-zinc-700">
<div class="px-4 py-3 border-b border-zinc-200 dark:border-zinc-700">
<h3 class="text-sm font-semibold text-zinc-900 dark:text-zinc-100">
Network Interfaces
</h3>
</div>
<div class="overflow-x-auto">
<table class="min-w-full divide-y divide-zinc-200 dark:divide-zinc-700">
<thead class="bg-zinc-50 dark:bg-zinc-900">
<tr class="text-xs text-zinc-600 dark:text-zinc-400">
<th class="px-4 py-3 text-left font-medium">#</th>
<th class="px-4 py-3 text-left font-medium">Name</th>
<th class="px-4 py-3 text-left font-medium">Status</th>
<th class="px-4 py-3 text-left font-medium">Speed</th>
<th class="px-4 py-3 text-left font-medium">MAC</th>
<th class="px-4 py-3 text-left font-medium">Type</th>
</tr>
</thead>
<tbody class="divide-y divide-zinc-200 dark:divide-zinc-700">
<%= for interface <- @snmp_interfaces do %>
<tr class="text-sm hover:bg-zinc-50 dark:hover:bg-zinc-900">
<td class="px-4 py-3 text-zinc-900 dark:text-zinc-100">
{interface.if_index}
</td>
<td class="px-4 py-3">
<.link
navigate={
~p"/orgs/#{@current_organization.slug}/equipment/#{@equipment.id}/graph/traffic?interface_id=#{interface.id}"
}
class="hover:text-blue-600 dark:hover:text-blue-400"
>
<div class="font-medium text-zinc-900 dark:text-zinc-100 hover:underline">
{interface.if_name || interface.if_descr}
</div>
<%= if interface.if_alias do %>
<div class="text-xs text-zinc-500 dark:text-zinc-400">
{interface.if_alias}
</div>
<% end %>
</.link>
</td>
<td class="px-4 py-3">
<span class={[
"inline-flex items-center px-2 py-0.5 rounded text-xs font-medium",
interface.if_oper_status == "up" &&
"bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-200",
interface.if_oper_status == "down" &&
"bg-red-100 text-red-800 dark:bg-red-900 dark:text-red-200",
interface.if_oper_status not in ["up", "down"] &&
"bg-zinc-100 text-zinc-800 dark:bg-zinc-800 dark:text-zinc-200"
]}>
{String.upcase(interface.if_oper_status || "unknown")}
</span>
</td>
<td class="px-4 py-3 text-zinc-900 dark:text-zinc-100">
{format_speed(interface.if_speed)}
</td>
<td class="px-4 py-3 font-mono text-xs text-zinc-600 dark:text-zinc-400">
{interface.if_phys_address || "-"}
</td>
<td class="px-4 py-3 text-xs text-zinc-600 dark:text-zinc-400">
{interface.if_type || "-"}
</td>
</tr>
<% end %>
</tbody>
</table>
</div>
<div class="space-y-6">
<%= for {category, interfaces} <- @interfaces_by_type do %>
<div class="bg-white dark:bg-zinc-800 rounded-lg border border-zinc-200 dark:border-zinc-700">
<div class="px-4 py-3 border-b border-zinc-200 dark:border-zinc-700">
<h3 class="text-sm font-semibold text-zinc-900 dark:text-zinc-100">
{category} Interfaces
<span class="ml-2 text-xs font-normal text-zinc-500 dark:text-zinc-400">
({length(interfaces)})
</span>
</h3>
</div>
<div class="overflow-x-auto">
<table class="min-w-full divide-y divide-zinc-200 dark:divide-zinc-700">
<thead class="bg-zinc-50 dark:bg-zinc-900">
<tr class="text-xs text-zinc-600 dark:text-zinc-400">
<th class="px-4 py-3 text-left font-medium">#</th>
<th class="px-4 py-3 text-left font-medium">Name</th>
<th class="px-4 py-3 text-left font-medium">Status</th>
<th class="px-4 py-3 text-left font-medium">Speed</th>
<th class="px-4 py-3 text-left font-medium">MAC</th>
</tr>
</thead>
<tbody class="divide-y divide-zinc-200 dark:divide-zinc-700">
<%= for interface <- interfaces do %>
<tr class="text-sm hover:bg-zinc-50 dark:hover:bg-zinc-900">
<td class="px-4 py-3 text-zinc-900 dark:text-zinc-100">
{interface.if_index}
</td>
<td class="px-4 py-3">
<.link
navigate={
~p"/orgs/#{@current_organization.slug}/equipment/#{@equipment.id}/graph/traffic?interface_id=#{interface.id}"
}
class="hover:text-blue-600 dark:hover:text-blue-400"
>
<div class="font-medium text-zinc-900 dark:text-zinc-100 hover:underline">
{interface.if_name || interface.if_descr}
</div>
<%= if interface.if_alias do %>
<div class="text-xs text-zinc-500 dark:text-zinc-400">
{interface.if_alias}
</div>
<% end %>
</.link>
</td>
<td class="px-4 py-3">
<span class={[
"inline-flex items-center px-2 py-0.5 rounded text-xs font-medium",
interface.if_oper_status == "up" &&
"bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-200",
interface.if_oper_status == "down" &&
"bg-red-100 text-red-800 dark:bg-red-900 dark:text-red-200",
interface.if_oper_status not in ["up", "down"] &&
"bg-zinc-100 text-zinc-800 dark:bg-zinc-800 dark:text-zinc-200"
]}>
{String.upcase(interface.if_oper_status || "unknown")}
</span>
</td>
<td class="px-4 py-3 text-zinc-900 dark:text-zinc-100">
{format_speed(interface.if_speed)}
</td>
<td class="px-4 py-3 font-mono text-xs text-zinc-600 dark:text-zinc-400">
{interface.if_phys_address || "-"}
</td>
</tr>
<% end %>
</tbody>
</table>
</div>
</div>
<% end %>
</div>
<% else %>
<div class="text-center py-12">

View file

@ -1,106 +0,0 @@
defmodule ToweropsWeb.Plugs.AgentAuth do
@moduledoc """
Plug for authenticating remote agent API requests.
Validates Bearer tokens in the Authorization header and assigns the agent token
to the connection. Also updates the agent's last_seen_at timestamp asynchronously.
"""
import Phoenix.Controller
import Plug.Conn
alias Ecto.Adapters.SQL.Sandbox
alias Towerops.Agents
@doc """
Initializes the plug with options.
"""
def init(opts), do: opts
@doc """
Validates the agent token from the Authorization header.
If valid, assigns :current_agent_token to the connection and updates heartbeat.
If invalid or missing, returns 401 Unauthorized and halts the connection.
"""
def call(conn, _opts) do
case get_req_header(conn, "authorization") do
["Bearer " <> token] ->
case Agents.verify_agent_token(token) do
{:ok, agent_token} ->
conn
|> assign(:current_agent_token, agent_token)
|> update_heartbeat(agent_token)
{:error, _} ->
unauthorized(conn)
end
_ ->
unauthorized(conn)
end
end
defp update_heartbeat(conn, agent_token) do
ip = get_client_ip(conn)
# In test environment, update synchronously to avoid DB ownership issues
# In production, update asynchronously for better performance
if Application.get_env(:towerops, :env) == :test do
_ = Agents.update_agent_token_heartbeat(agent_token.id, ip)
else
update_heartbeat_async(agent_token.id, ip)
end
conn
end
# Get the real client IP, checking forwarded headers first
defp get_client_ip(conn) do
# Check X-Forwarded-For header first (set by load balancers/proxies)
case get_req_header(conn, "x-forwarded-for") do
[forwarded | _] ->
# X-Forwarded-For can have multiple IPs (client, proxy1, proxy2...)
# Take the first one (original client)
forwarded
|> String.split(",")
|> List.first()
|> String.trim()
[] ->
# Fall back to X-Real-IP
case get_req_header(conn, "x-real-ip") do
[real_ip | _] ->
String.trim(real_ip)
[] ->
# Fall back to conn.remote_ip
to_string(:inet_parse.ntoa(conn.remote_ip))
end
end
end
defp update_heartbeat_async(agent_token_id, ip) do
parent = self()
Task.start(fn ->
# Allow this task to use the test database sandbox (shouldn't happen in prod)
allow_sandbox(parent)
Agents.update_agent_token_heartbeat(agent_token_id, ip)
end)
end
defp allow_sandbox(parent) do
if Application.get_env(:towerops, :sql_sandbox) do
Sandbox.allow(Towerops.Repo, parent, self())
end
end
defp unauthorized(conn) do
conn
|> put_status(:unauthorized)
|> put_view(json: ToweropsWeb.ErrorJSON)
|> render(:"401")
|> halt()
end
end

View file

@ -18,11 +18,6 @@ defmodule ToweropsWeb.Router do
plug :accepts, ["json"]
end
pipeline :agent_api do
plug :accepts, ["json", "protobuf"]
plug ToweropsWeb.Plugs.AgentAuth
end
pipeline :mobile_api do
plug :accepts, ["json"]
plug ToweropsWeb.Plugs.MobileAuth
@ -39,14 +34,8 @@ defmodule ToweropsWeb.Router do
get "/", PageController, :home
end
# Agent API routes
scope "/api/v1/agent", ToweropsWeb.Api do
pipe_through :agent_api
get "/config", AgentController, :get_config
post "/metrics", AgentController, :submit_metrics
post "/heartbeat", AgentController, :heartbeat
end
# Agent communication via WebSocket channel at /socket/agent
# See ToweropsWeb.AgentChannel for implementation
# Mobile Auth API routes (no authentication required for login flow)
scope "/api/v1/mobile/auth", ToweropsWeb.Api do

View file

@ -96,3 +96,60 @@ message HeartbeatMetadata {
message HeartbeatResponse {
string status = 1;
}
// Channel-based communication messages
enum JobType {
DISCOVER = 0; // Full device discovery
POLL = 1; // Poll known sensors/interfaces
}
enum QueryType {
GET = 0; // SNMP GET operation
WALK = 1; // SNMP WALK operation
}
message AgentJob {
string job_id = 1; // Unique job identifier (e.g., "discover:eq123")
JobType job_type = 2; // DISCOVER or POLL
string equipment_id = 3; // Equipment UUID
SnmpDevice device = 4; // SNMP connection details
repeated SnmpQuery queries = 5; // Queries to execute
}
message AgentJobList {
repeated AgentJob jobs = 1;
}
message SnmpDevice {
string ip = 1;
string community = 2;
string version = 3; // "1", "2c", or "3"
uint32 port = 4;
}
message SnmpQuery {
QueryType query_type = 1;
repeated string oids = 2; // OIDs to query (GET) or walk (WALK)
}
message SnmpResult {
string equipment_id = 1;
JobType job_type = 2;
map<string, string> oid_values = 3; // OID value mapping
int64 timestamp = 4; // Unix timestamp in seconds
}
message AgentHeartbeat {
string version = 1;
string hostname = 2;
uint64 uptime_seconds = 3;
string ip_address = 4; // Agent's IP address
}
message AgentError {
string equipment_id = 1;
string job_id = 2;
string message = 3;
int64 timestamp = 4;
}

View file

@ -1,458 +0,0 @@
defmodule ToweropsWeb.Api.AgentControllerTest do
use ToweropsWeb.ConnCase
import Towerops.AccountsFixtures
alias Towerops.Agent.InterfaceStat
alias Towerops.Agent.Metric
alias Towerops.Agent.MetricBatch
alias Towerops.Agent.SensorReading
alias Towerops.Agents
alias Towerops.Repo
alias Towerops.Snmp.Device
alias Towerops.Snmp.Interface
alias Towerops.Snmp.Sensor
setup do
user = user_fixture()
{:ok, organization} =
Towerops.Organizations.create_organization(%{name: "Test Org"}, user.id)
{:ok, agent_token, token} = Agents.create_agent_token(organization.id, "Test Agent")
%{organization: organization, agent_token: agent_token, token: token}
end
describe "GET /api/v1/agent/config" do
test "requires authentication", %{conn: conn} do
conn = get(conn, ~p"/api/v1/agent/config")
assert json_response(conn, 401)
end
test "returns config for authenticated agent with no equipment", %{conn: conn, token: token} do
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> get(~p"/api/v1/agent/config")
assert %{
"version" => "1.0",
"poll_interval_seconds" => 60,
"equipment" => []
} = json_response(conn, 200)
end
test "returns config with equipment without SNMP device", %{
conn: conn,
token: token,
organization: org,
agent_token: agent_token
} do
{:ok, site} =
Towerops.Sites.create_site(%{
name: "Test Site",
organization_id: org.id
})
{:ok, equipment} =
Towerops.Equipment.create_equipment(%{
name: "Test Router",
ip_address: "192.168.1.1",
snmp_enabled: true,
snmp_version: "2c",
snmp_community: "public",
site_id: site.id
})
{:ok, _assignment} = Agents.assign_equipment_to_agent(agent_token.id, equipment.id)
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> get(~p"/api/v1/agent/config")
response = json_response(conn, 200)
assert %{
"version" => "1.0",
"poll_interval_seconds" => 60,
"equipment" => [equipment_config]
} = response
assert equipment_config["id"] == equipment.id
assert equipment_config["sensors"] == []
assert equipment_config["interfaces"] == []
end
test "returns config with assigned equipment", %{
conn: conn,
token: token,
organization: org,
agent_token: agent_token
} do
{:ok, site} =
Towerops.Sites.create_site(%{
name: "Test Site",
organization_id: org.id
})
{:ok, equipment} =
Towerops.Equipment.create_equipment(%{
name: "Test Router",
ip_address: "192.168.1.1",
snmp_enabled: true,
snmp_version: "2c",
snmp_community: "public",
snmp_port: 161,
check_interval_seconds: 120,
site_id: site.id
})
device =
%Device{}
|> Device.changeset(%{
equipment_id: equipment.id,
sys_name: "Test Device",
sys_descr: "Test Description"
})
|> Repo.insert!()
sensor =
%Sensor{}
|> Sensor.changeset(%{
snmp_device_id: device.id,
sensor_type: "temperature",
sensor_index: "1",
sensor_oid: "1.2.3.4"
})
|> Repo.insert!()
interface =
%Interface{}
|> Interface.changeset(%{
snmp_device_id: device.id,
if_index: 1,
if_name: "GigabitEthernet0/1"
})
|> Repo.insert!()
{:ok, _assignment} = Agents.assign_equipment_to_agent(agent_token.id, equipment.id)
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> get(~p"/api/v1/agent/config")
response = json_response(conn, 200)
assert %{
"version" => "1.0",
"poll_interval_seconds" => 60,
"equipment" => [equipment_config]
} = response
assert equipment_config["id"] == equipment.id
assert equipment_config["name"] == "Test Router"
assert equipment_config["ip_address"] == "192.168.1.1"
assert equipment_config["snmp"]["enabled"] == true
assert equipment_config["snmp"]["version"] == "2c"
assert equipment_config["snmp"]["community"] == "public"
assert equipment_config["snmp"]["port"] == 161
assert equipment_config["poll_interval_seconds"] == 120
assert length(equipment_config["sensors"]) == 1
sensor_config = hd(equipment_config["sensors"])
assert sensor_config["id"] == sensor.id
assert sensor_config["type"] == "temperature"
assert sensor_config["oid"] == "1.2.3.4"
assert length(equipment_config["interfaces"]) == 1
interface_config = hd(equipment_config["interfaces"])
assert interface_config["id"] == interface.id
assert interface_config["if_index"] == 1
assert interface_config["if_name"] == "GigabitEthernet0/1"
end
test "returns equipment with hierarchical agent assignment", %{
conn: conn,
token: token,
organization: org,
agent_token: agent_token
} do
# Create another agent
{:ok, other_agent, _other_token} =
Agents.create_agent_token(org.id, "Other Agent")
# Set organization default to other_agent
{:ok, _org} =
Towerops.Organizations.update_organization(org, %{
default_agent_token_id: other_agent.id
})
# Create site1 with no agent (will inherit org default)
{:ok, site1} =
Towerops.Sites.create_site(%{
name: "Site 1",
organization_id: org.id
})
# Create site2 with explicit agent assignment to our agent
{:ok, site2} =
Towerops.Sites.create_site(%{
name: "Site 2",
organization_id: org.id,
agent_token_id: agent_token.id
})
# Create site3 with no agent (will inherit org default)
{:ok, site3} =
Towerops.Sites.create_site(%{
name: "Site 3",
organization_id: org.id
})
# Equipment 1: Directly assigned to our agent (highest priority)
{:ok, equipment1} =
Towerops.Equipment.create_equipment(%{
name: "Equipment 1",
ip_address: "192.168.1.1",
snmp_enabled: true,
snmp_version: "2c",
snmp_community: "public",
site_id: site1.id
})
{:ok, _} = Agents.assign_equipment_to_agent(agent_token.id, equipment1.id)
# Equipment 2: At site2, inherits from site (our agent)
{:ok, equipment2} =
Towerops.Equipment.create_equipment(%{
name: "Equipment 2",
ip_address: "192.168.1.2",
snmp_enabled: true,
snmp_version: "2c",
snmp_community: "public",
site_id: site2.id
})
# Equipment 3: At site3, inherits from org default (other agent) - should NOT be returned
{:ok, _equipment3} =
Towerops.Equipment.create_equipment(%{
name: "Equipment 3",
ip_address: "192.168.1.3",
snmp_enabled: true,
snmp_version: "2c",
snmp_community: "public",
site_id: site3.id
})
# Equipment 4: SNMP disabled - should NOT be returned
{:ok, _equipment4} =
Towerops.Equipment.create_equipment(%{
name: "Equipment 4",
ip_address: "192.168.1.4",
snmp_enabled: false,
site_id: site1.id
})
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> get(~p"/api/v1/agent/config")
response = json_response(conn, 200)
assert %{"equipment" => equipment_list} = response
assert length(equipment_list) == 2
# Verify equipment IDs match
equipment_ids = Enum.map(equipment_list, & &1["id"])
assert equipment1.id in equipment_ids
assert equipment2.id in equipment_ids
end
end
describe "POST /api/v1/agent/metrics" do
test "requires authentication", %{conn: conn} do
conn = post(conn, ~p"/api/v1/agent/metrics", %{"metrics" => []})
assert json_response(conn, 401)
end
test "accepts valid metrics", %{conn: conn, token: token} do
metrics = [
%{
"type" => "sensor_reading",
"sensor_id" => Ecto.UUID.generate(),
"value" => 45.5,
"status" => "ok",
"timestamp" => DateTime.to_iso8601(DateTime.utc_now())
},
%{
"type" => "interface_stat",
"interface_id" => Ecto.UUID.generate(),
"if_in_octets" => 1_234_567,
"if_out_octets" => 9_876_543,
"if_in_errors" => 0,
"if_out_errors" => 0,
"if_in_discards" => 0,
"if_out_discards" => 0,
"timestamp" => DateTime.to_iso8601(DateTime.utc_now())
}
]
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> post(~p"/api/v1/agent/metrics", %{"metrics" => metrics})
assert %{"status" => "accepted", "received" => 2} = json_response(conn, 200)
end
test "accepts protobuf metrics", %{conn: conn, token: token} do
# Create protobuf metrics
sensor_reading = %SensorReading{
sensor_id: Ecto.UUID.generate(),
value: 45.5,
status: "ok",
timestamp: DateTime.to_unix(DateTime.utc_now())
}
interface_stat = %InterfaceStat{
interface_id: Ecto.UUID.generate(),
if_in_octets: 1_234_567,
if_out_octets: 9_876_543,
if_in_errors: 0,
if_out_errors: 0,
if_in_discards: 0,
if_out_discards: 0,
timestamp: DateTime.to_unix(DateTime.utc_now())
}
batch = %MetricBatch{
metrics: [
%Metric{metric_type: {:sensor_reading, sensor_reading}},
%Metric{metric_type: {:interface_stat, interface_stat}}
]
}
# Encode to protobuf binary
encoded = MetricBatch.encode(batch)
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> put_req_header("content-type", "application/x-protobuf")
|> post(~p"/api/v1/agent/metrics", encoded)
assert %{"status" => "accepted", "received" => 2} = json_response(conn, 200)
end
test "handles protobuf metrics with unknown types", %{conn: conn, token: token} do
# Create metric with unknown type (by using empty metric_type)
batch = %MetricBatch{
metrics: [
%Metric{metric_type: nil}
]
}
encoded = MetricBatch.encode(batch)
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> put_req_header("content-type", "application/x-protobuf")
|> post(~p"/api/v1/agent/metrics", encoded)
# Unknown types are filtered out, so received count is 0
assert %{"status" => "accepted", "received" => 0} = json_response(conn, 200)
end
test "handles JSON metrics with unknown types", %{conn: conn, token: token} do
metrics = [
%{
"type" => "unknown_type",
"some_field" => "value"
}
]
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> post(~p"/api/v1/agent/metrics", %{"metrics" => metrics})
assert %{"status" => "accepted", "received" => 1} = json_response(conn, 200)
end
test "handles metrics with nil timestamp", %{conn: conn, token: token} do
metrics = [
%{
"type" => "sensor_reading",
"sensor_id" => Ecto.UUID.generate(),
"value" => 45.5,
"status" => "ok",
"timestamp" => nil
}
]
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> post(~p"/api/v1/agent/metrics", %{"metrics" => metrics})
assert %{"status" => "accepted", "received" => 1} = json_response(conn, 200)
end
test "handles metrics with invalid ISO8601 timestamp", %{conn: conn, token: token} do
metrics = [
%{
"type" => "sensor_reading",
"sensor_id" => Ecto.UUID.generate(),
"value" => 45.5,
"status" => "ok",
"timestamp" => "invalid-date-string"
}
]
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> post(~p"/api/v1/agent/metrics", %{"metrics" => metrics})
assert %{"status" => "accepted", "received" => 1} = json_response(conn, 200)
end
end
describe "POST /api/v1/agent/heartbeat" do
test "requires authentication", %{conn: conn} do
conn = post(conn, ~p"/api/v1/agent/heartbeat", %{})
assert json_response(conn, 401)
end
test "updates heartbeat with metadata", %{
conn: conn,
token: token,
agent_token: agent_token
} do
conn =
conn
|> put_req_header("authorization", "Bearer #{token}")
|> post(~p"/api/v1/agent/heartbeat", %{
"version" => "0.1.0",
"hostname" => "test-agent",
"uptime_seconds" => 3600
})
assert %{"status" => "ok"} = json_response(conn, 200)
# Give the async task time to complete
Process.sleep(100)
updated_token = Repo.get!(Agents.AgentToken, agent_token.id)
assert updated_token.last_seen_at
assert updated_token.metadata["version"] == "0.1.0"
assert updated_token.metadata["hostname"] == "test-agent"
assert updated_token.metadata["uptime_seconds"] == 3600
end
end
end

View file

@ -1,120 +0,0 @@
defmodule ToweropsWeb.Plugs.AgentAuthTest do
use ToweropsWeb.ConnCase, async: false
import Towerops.AccountsFixtures
alias Towerops.Agents
alias ToweropsWeb.Plugs.AgentAuth
setup %{conn: conn} do
user = user_fixture()
{:ok, organization} = Towerops.Organizations.create_organization(%{name: "Test Org"}, user.id)
{:ok, agent_token, token_string} = Agents.create_agent_token(organization.id, "Test Agent")
# Set format to json for API endpoint
conn =
conn
|> Plug.Conn.fetch_query_params()
|> Phoenix.Controller.put_format("json")
%{conn: conn, organization: organization, agent_token: agent_token, token_string: token_string}
end
describe "init/1" do
test "returns options unchanged" do
opts = [some: :option]
assert AgentAuth.init(opts) == opts
end
end
describe "call/2" do
test "authenticates valid Bearer token", %{conn: conn, agent_token: agent_token, token_string: token_string} do
conn =
conn
|> put_req_header("authorization", "Bearer #{token_string}")
|> AgentAuth.call([])
assert conn.assigns.current_agent_token.id == agent_token.id
refute conn.halted
end
test "rejects missing authorization header", %{conn: conn} do
conn = AgentAuth.call(conn, [])
assert conn.status == 401
assert conn.halted
end
test "rejects invalid Bearer token format", %{conn: conn} do
conn =
conn
|> put_req_header("authorization", "InvalidFormat token123")
|> AgentAuth.call([])
assert conn.status == 401
assert conn.halted
end
test "rejects malformed Bearer token", %{conn: conn} do
conn =
conn
|> put_req_header("authorization", "Bearer")
|> AgentAuth.call([])
assert conn.status == 401
assert conn.halted
end
test "rejects invalid token value", %{conn: conn} do
conn =
conn
|> put_req_header("authorization", "Bearer invalid_token_value")
|> AgentAuth.call([])
assert conn.status == 401
assert conn.halted
end
test "updates agent token heartbeat", %{
conn: conn,
agent_token: agent_token,
token_string: token_string
} do
# Get initial last_seen_at
initial_agent_token = Agents.get_agent_token!(agent_token.id)
initial_last_seen = initial_agent_token.last_seen_at
conn =
conn
|> put_req_header("authorization", "Bearer #{token_string}")
|> AgentAuth.call([])
# In test environment, heartbeat update is synchronous
# Verify heartbeat was updated
updated_agent_token = Agents.get_agent_token!(agent_token.id)
if initial_last_seen do
assert DateTime.compare(updated_agent_token.last_seen_at, initial_last_seen) in [:gt, :eq]
else
assert updated_agent_token.last_seen_at
end
assert updated_agent_token.last_ip == "127.0.0.1"
refute conn.halted
end
test "handles token verification error gracefully", %{conn: conn} do
# Use a token that looks valid but doesn't exist
fake_token = String.duplicate("a", 32)
conn =
conn
|> put_req_header("authorization", "Bearer #{fake_token}")
|> AgentAuth.call([])
assert conn.status == 401
assert conn.halted
end
end
end