Problem: probe logic (checkHTTP, checkTCP, checkPing, checkDNS,
checkSSHScript, etc.) was embedded inside scheduler/scheduler.go as
unexported functions coupled to sqlcgen types — unreachable from the
core ObservationService the hexagonal refactor needs.
Change:
- adapters/probes/network.go: HTTP, TCP, ping, and DNS probe adapters
implementing ports.Checker. Each parses CheckDef.Config (json map),
runs the probe against the Target, and returns a ports.CheckResult.
configMap helper unmarshals config JSON; parseStr/parseFloat extract
typed values.
- adapters/probes/ssh.go: SSHChecker wraps actuator.Dial +
RunCombinedOutput with a SignerSource for key resolution. Registry
(map[string]ports.Checker) with NewRegistry() pre-populating all
known kinds (ssh-script, vm-status, backup-freshness, cert-expiry
set to nil — filled by the ObservationService when signers are
available).
Verification: go build/vet, full test suite (19 pkgs), DB integration
(postgres + mcp — green).
