Matt Bostock 890f148a27 Prevent panic on failed config load ... Prevent Alertmanager from panicking when the configuration cannot be loaded. Spotted in version 0.4.2: INFO[0000] Starting alertmanager (version=0.4.2, branch=HEAD, revision=9a5ab2fa63dd7951f4f202b0846d4f4d8e9615b0) source=main.go:84 INFO[0000] Build context (go=go1.7.3, user=root@45f28166fed1, date=20170117-13:50:50) source=main.go:85 INFO[0000] Loading configuration file file=alertmanager.yml source=main.go:156 ERRO[0000] error: yaml: line 64: could not find expected ':' source=api.go:115 panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x401adb] goroutine 1 [running]: panic(0x83e240, 0xc42000e020) /usr/local/go/src/runtime/panic.go:500 +0x1a1 main.(*API).Update(0xc4200b20f0, 0xc42019f800, 0x17e7, 0x45d964b800) /go/src/github.com/prometheus/alertmanager/api.go:117 +0xcb main.main.func3(0x0, 0x0) /go/src/github.com/prometheus/alertmanager/main.go:172 +0x226 main.main() /go/src/github.com/prometheus/alertmanager/main.go:192 +0x97a make: *** [run] Error 2		2017-01-17 14:59:11 +00:00
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api.go	Prevent panic on failed config load	2017-01-17 14:59:11 +00:00