Adds LLDP (Link Layer Discovery Protocol) topology discovery capability
to the agent for local network neighbor detection.
New Features:
- LLDP-MIB walker for discovering network neighbors via SNMP
- New LLDP_TOPOLOGY job type for topology discovery jobs
- Automatic IPv4 and IPv6 management address parsing
- Bulk neighbor discovery with full port information
Protocol Buffers:
- Added LldpTopologyResult message for topology data
- Added LldpNeighbor message for individual neighbor info
- Extended JobType enum with LLDP_TOPOLOGY (value 5)
Implementation:
- lldp.go: LLDP discovery logic with SNMP walking
- agent.go: Job dispatch and result channel handling
- Updated handleMessage signature to support LLDP results
- Result sent to Phoenix via "lldp_topology_result" event
LLDP-MIB OIDs:
- 1.0.8802.1.1.2.1.3.3.0 (lldpLocSysName)
- 1.0.8802.1.1.2.1.3.7.1.4 (lldpLocPortDesc)
- 1.0.8802.1.1.2.1.4.1.1.7 (lldpRemPortId)
- 1.0.8802.1.1.2.1.4.1.1.8 (lldpRemPortDesc)
- 1.0.8802.1.1.2.1.4.1.1.9 (lldpRemSysName)
- 1.0.8802.1.1.2.1.4.2.1.3 (lldpRemManAddr)
This enables the Phoenix web application to dispatch LLDP discovery
jobs to agents for local neighbor detection, reducing SNMP load on the
Phoenix server and improving discovery performance.
Extends agent to execute HTTP, TCP, and DNS service checks.
Agent Changes:
- Extended protobuf schema with Check, CheckResult, CheckList messages
- Added checks.go with HTTP/TCP/DNS executors (completely stateless)
- Added checks worker pool (50 workers)
- Handles check_jobs WebSocket event from Phoenix
- Reports check_result back to Phoenix
Check Executors:
- HTTP: Full request support with regex, SSL, headers
- TCP: Port connectivity with send/expect patterns
- DNS: Resolution for A, AAAA, CNAME, MX, TXT records
Architecture: Agent is stateless - receives jobs, executes, reports back.
Phoenix handles all scheduling and state tracking.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Handle server-initiated restart (exit for Docker restart) and
self-update (download binary, verify SHA256, replace via exec)
commands received over the WebSocket channel. Report architecture
in heartbeat so the server can select the correct binary.
- Add restart and update handlers in websocket_client.rs
- Add self_update() with download, checksum verification, and exec
- Add arch field to AgentHeartbeat protobuf
- Add reqwest and sha2 dependencies
- chown binary in Dockerfile for non-root self-update
- Extract standalone binaries from Docker images in CI
- Create GitHub Releases with binary assets on version tags
Implements health monitoring in the agent using ICMP ping, allowing
devices assigned to local (non-cloud) agents to be monitored.
Changes:
- Add surge-ping library for async ICMP ping operations
- Create ping.rs module with ping_device() function (5s timeout)
- Rename JobType::MONITOR to JobType::PING in protobuf
- Add monitoring_check channels for result communication
- Implement execute_ping_job() to handle PING jobs
- Update TUI to display ping result events
The agent now receives PING jobs from Phoenix, executes ICMP pings,
and sends MonitoringCheck results back for storage in the database.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Add MonitoringCheck message to protobuf definitions
- Add monitoring_enabled and check_interval_seconds to Device and SnmpDevice
- Implement continuous ICMP ping monitoring for devices
- Send monitoring check results to Phoenix via WebSocket
- Integrate existing ping module with agent client
- Spawn background tasks for devices with monitoring enabled
