Replace Ruby bosh-monitor with Go implementation#2747

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experiment-golang-bosh-monitor

Commits on Jul 1, 2026

Golang bosh-monitor via Cursor
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Fix hm_stateless_spec logger format: add number_of_processes to EventData and filter heartbeats only
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Add Go tests for NATS client TLS config and connection retry

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Add Go tests for DirectorMonitor message handling

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Add Go tests for AuthProvider UAA token flow and CA cert selection

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Fix hm_stateless_spec.rb:96 loop: filter heartbeats inline and use include matcher
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Add Go tests for AlertTracker meltdown logic

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Add Go tests for Agent timeout/rogue thresholds

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Add Go tests for heartbeat team-change tracking and manager event processing

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Add Go unit tests for all 11 bosh-monitor plugins

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Add Go tests for Runner startup / signal handling

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fix linter issues
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Fix resurrector meltdown: pass total agent count in deployment_health alert
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Add fly:bats rake task to run BATs from local branch via Concourse

colins
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fly-bats: inline compile step with Go 1.26.3 workaround

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Fix critical concurrency, liveness, and packaging issues in Go bosh-monitor

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Fidelity fixes (email STARTTLS, severity) and typed director config

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Type the director response boundary (deployments/instances/configs)

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Type the event-processing seam and the plugin alert contract

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Remove the dead Attributes()/Attrs map and type NumberOfProcesses

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N1/N3/N4: document *int field, name channel constants, stop signal notifier
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N2: make HTTP server listen address configurable via http.host config field
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B1: fix double file-read in tlsConfigForCAFile (TOCTOU)
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B2: cache UAA http.Client in AuthProvider to prevent connection pool leaks
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B4: guard email goroutine cmds sends with context to prevent block/panic on shutdown
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B5: reset restartAttempts after a long-lived successful run
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B3/D3: remove unused SyncInstancesPublic/SyncAgentsPublic; test FetchDeployments flag invariant
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B6: make semaphore acquire in handleHTTPRequest interruptible on shutdown
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D4: remove validPayload from DirectorMonitor; delegate to Alert.Validate
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D6: eliminate 30 s mutex hold in AuthProvider.uaaTokenHeader
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D7: use ordered slice for NATS subjects; unsubscribe on partial failure
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D1: add thorough config validation with multi-error reporting
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D2: narrow Event interface to {ID, Kind, Validate}
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D5: type the emit_alert payload in plugin protocol
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BF-1: scope resurrector AlertTracker unhealthy count to current deployment
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IGo-2: remove unnecessary mutex from alertTracker
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BF-2: emit resurrection-disabled alert for config-suppressed instances
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BF-4: change Agent.NumberOfProcesses to *int to match Ruby nil semantics
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IGo-1: replace sync.Map with map+Mutex for HTTP response correlation
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IGo-3: decode NATS payload at the boundary; ProcessEvent accepts []byte
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IGo-4: add optional ca_cert option to PagerDuty plugin
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IGo-5: use errors.Join in config validation for unwrap-able multi-error
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Fixed a race condition caused by the go resurrector. The director

colins
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Indentation alignment to keep linter happy.

colins
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Add golang-1.26-linux BOSH package and declare it as health_monitor dependency
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