The remaining @dialyzer {:no_opaque, ...} / {:nowarn_function, ...}
directives in accounts.ex, devices.ex, organizations.ex all masked the
same upstream issue: Ecto.Multi.new/0 produces a struct containing a
literal %MapSet{map: %{}} whose concrete shape violates MapSet's
@opaque t at every subsequent Ecto.Multi.* call boundary.
Tried first: public helper function with @spec Ecto.Multi.t() — confirmed
dialyzer uses success typing of the body, not the spec. Doesn't help.
Real fix: drop Ecto.Multi entirely for these transactions. Each was
performing a small, sequential set of Repo operations that map cleanly
to a plain `Repo.transaction(fn -> ... end)` block with Repo.rollback
on errors. No Multi machinery is actually needed:
- accounts.ex:
- register_user/1: insert + 0-2 consent grants
- register_user_with_organization/1: insert + create_org + consents
- confirm_user_transaction/1: update + delete_all tokens
- organizations.ex:
- do_create_organization/4: lock user → limit check → insert org + membership
- set_default_organization/2: two update_alls
- accept_invitation/2: update invitation + insert membership
- devices.ex:
- create_device/2: maybe lock org → maybe quota check → insert
Caught a real consent-failure rollback bug along the way: initial
refactor discarded the return of grant_consents_sequential/2, which
meant FK violations on consent insert would abort the transaction at
the Postgres level but the caller still saw {:ok, user} — later
operations in the transaction silently failed with 25P02. Fixed by
propagating the {:error, changeset} up so Repo.rollback is called.
Verified by the AccountsDefensiveCoverageTest regression tests.
Behavior is preserved — same transactional guarantees, same success
/ error tuple shapes. Net -86 LOC and no suppressions.
mix dialyzer: `done (passed successfully)` with zero @dialyzer
directives in lib/.
|
||
|---|---|---|
| .claude | ||
| .forgejo | ||
| .gitlab/agents | ||
| assets | ||
| bin | ||
| c_src | ||
| config | ||
| docs | ||
| e2e | ||
| flux | ||
| k8s | ||
| lib | ||
| mibs | ||
| nix | ||
| policies | ||
| priv | ||
| rel | ||
| scripts | ||
| test | ||
| tools | ||
| towerops | ||
| vendor | ||
| .credo.exs | ||
| .dialyzer_ignore.exs | ||
| .dockerignore | ||
| .envrc.example | ||
| .formatter.exs | ||
| .gitignore | ||
| .gitlab-ci.yml.nix | ||
| .pre-commit-config.yaml | ||
| .sourceignore | ||
| .stride.md | ||
| .test-watch.exs | ||
| .tool-versions | ||
| AGENTS.md | ||
| CHANGELOG.txt | ||
| CLAUDE.md | ||
| DEPLOYMENT.md | ||
| Dockerfile | ||
| dry.md | ||
| ENTITY_PHYSICAL_IMPLEMENTATION.md | ||
| findings_librenms.md | ||
| flake.lock | ||
| flake.nix | ||
| Makefile | ||
| mix.exs | ||
| mix.lock | ||
| package-lock.json | ||
| package.json | ||
| README.md | ||
| REFACTOR_SUMMARY.md | ||
| renovate.json | ||
| setup_stripe_meter.exs | ||
| setup_stripe_production.sh | ||
| shell.nix | ||
| tail_logs.sh | ||
| test_encode_decode.exs | ||
TowerOps
Network monitoring and alerting platform built with Phoenix LiveView.
Features
- Multi-tenant architecture - Organizations with role-based permissions
- Site hierarchy - Organize equipment across multiple sites
- Automated monitoring - Real-time ping monitoring with configurable intervals
- Time-series data - Efficient storage with TimescaleDB (optional)
- Real-time updates - LiveView dashboard with PubSub
- Equipment tracking - Monitor network devices by IP address
Quick Start
Prerequisites
- Elixir 1.14+
- PostgreSQL 14+
- (Optional) TimescaleDB for production-grade time-series performance
Setup
# Install dependencies
mix setup
# Start the server
mix phx.server
Visit localhost:4000 from your browser.
TimescaleDB (Production Only)
Development: Uses standard PostgreSQL (no TimescaleDB required).
Production: TimescaleDB is automatically enabled for optimal performance with time-series data.
# Production deployment - install TimescaleDB first
brew tap timescale/tap && brew install timescaledb # macOS
# Then run migrations with MIX_ENV=prod
MIX_ENV=prod mix ecto.migrate
See TIMESCALEDB.md for detailed installation and configuration.
How it works: Migrations detect the environment (MIX_ENV) and only enable TimescaleDB features (hypertables, compression, retention policies, continuous aggregates) in production.
Encryption Setup (Production)
TowerOps uses AES-256-GCM encryption for sensitive data (SNMP communities, MikroTik API passwords, etc.).
Development/Test
Encryption keys are pre-configured in config/dev.exs and config/test.exs. No action required.
Production
Set the CLOAK_KEY environment variable with a base64-encoded 32-byte key:
# Generate encryption key
openssl rand -base64 32
Important:
- Store the generated key securely in 1Password or your secrets manager
- Never commit the production key to version control
- Losing the encryption key makes encrypted data unrecoverable
Kubernetes Deployment
If secret doesn't exist yet (new deployment):
# Generate CLOAK_KEY (store in 1Password first!)
CLOAK_KEY=$(openssl rand -base64 32)
# Create towerops-secrets with all required keys
kubectl create secret generic towerops-secrets \
--from-literal=RELEASE_COOKIE=$(openssl rand -base64 32) \
--from-literal=SECRET_KEY_BASE=$(mix phx.gen.secret) \
--from-literal=CLOAK_KEY="$CLOAK_KEY" \
-n towerops
If secret already exists (add CLOAK_KEY to existing secret):
# Store new key in 1Password first!
# Bash/Zsh:
CLOAK_KEY=$(openssl rand -base64 32)
# Fish shell:
set CLOAK_KEY (openssl rand -base64 32)
# Method 1: Using kubectl create with dry-run and apply
kubectl create secret generic towerops-secrets \
--from-literal=CLOAK_KEY="$CLOAK_KEY" \
--dry-run=client -o yaml | \
kubectl apply -f - -n towerops
# Method 2: Direct inline generation (works in all shells)
kubectl create secret generic towerops-secrets \
--from-literal=CLOAK_KEY="$(openssl rand -base64 32)" \
--dry-run=client -o yaml | \
kubectl apply -f - -n towerops
# Restart pods to pick up new key
kubectl rollout restart deployment/towerops -n towerops
Development
Database
mix ecto.create # Create database
mix ecto.migrate # Run migrations
mix ecto.reset # Drop, create, and migrate
Testing
mix test # Run all tests
mix test --trace # Run with detailed output
Code Quality
mix format # Format code with Styler
mix compile --warnings-as-errors
Firmware Version Tracking
The system automatically checks for latest firmware versions daily (2 AM dev, 4 AM prod). To manually trigger a firmware check:
# Start IEx console
iex -S mix phx.server
# Manually trigger firmware version fetch
Oban.insert(Towerops.Workers.FirmwareVersionFetcherWorker.new(%{}))
The worker will:
- Fetch the latest MikroTik RouterOS version from RSS feed
- Store version information in the database
- Enable firmware update indicators on device detail pages
Check the logs for fetch results:
# View recent Oban jobs
Towerops.Repo.all(Oban.Job) |> Enum.take(5)
Learn more
- Official website: https://www.phoenixframework.org/
- Guides: https://hexdocs.pm/phoenix/overview.html
- Docs: https://hexdocs.pm/phoenix
- Forum: https://elixirforum.com/c/phoenix-forum
- Source: https://github.com/phoenixframework/phoenix