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feat(alerts): add alert for failed systemd services (#2173)

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Adds a user-configurable "Failed Services" alert that notifies when any
tracked systemd service enters the failed state, and again when all services
recover.

---------

Signed-off-by: Martin Stenröse <martin@stenrose.se>
Co-authored-by: henrygd <hank@henrygd.me>
This commit is contained in:
Martin Stenröse
2026-09-02 02:41:48 +02:00
committed by GitHub
parent ed88e6efae
commit 097180e8d7
17 changed files with 891 additions and 52 deletions
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3
internal/entities/system/system.go
View File

@@ -204,4 +204,7 @@ type CombinedData struct {
Containers []*container.Stats `json:"container" cbor:"2,keyasint"`
SystemdServices []*systemd.Service `json:"systemd,omitempty" cbor:"3,keyasint,omitempty"`
Details *Details `cbor:"4,keyasint,omitempty"`
// SystemdServicesUpdated distinguishes a fresh empty snapshot from a response
// that omitted systemd data (for example, a short-cache dashboard request).
SystemdServicesUpdated bool `json:"systemdUpdated,omitempty" cbor:"5,keyasint,omitempty"`
}

22
internal/entities/system/system_test.go
View File

@@ -63,3 +63,25 @@ func TestStatsLegacyBatteryPayload(t *testing.T) {
assert.Contains(t, payload, "bat")
assert.NotContains(t, payload, "bats")
}
func TestCombinedDataSystemdUpdateMarkerTransport(t *testing.T) {
data := CombinedData{SystemdServicesUpdated: true}
jsonData, err := json.Marshal(data)
require.NoError(t, err)
var decodedJSON CombinedData
require.NoError(t, json.Unmarshal(jsonData, &decodedJSON))
assert.True(t, decodedJSON.SystemdServicesUpdated)
assert.Empty(t, decodedJSON.SystemdServices)
cborData, err := cbor.Marshal(data)
require.NoError(t, err)
var decodedCBOR CombinedData
require.NoError(t, cbor.Unmarshal(cborData, &decodedCBOR))
assert.True(t, decodedCBOR.SystemdServicesUpdated)
assert.Empty(t, decodedCBOR.SystemdServices)
var legacy CombinedData
require.NoError(t, json.Unmarshal([]byte(`{"stats":{},"info":{},"container":[]}`), &legacy))
assert.False(t, legacy.SystemdServicesUpdated)
}