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Support failover URIs for Prometheus servers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| exec bash -x ./prometheus.sh & | ||
| exec bash -c 'I=0 ; while [ ! -f prometheus.pid ] && [ $I -lt 30 ]; do sleep 1; I=$((I+1)); done' | ||
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|
||
| pint.ok --no-color lint rules | ||
| ! stdout . | ||
| stderr 'level=error msg="Query failed" error="Post \\"http://127.0.0.1:1055/api/v1/query\\": dial tcp 127.0.0.1:1055: connect: connection refused" query=count\(foo\) uri=http://127.0.0.1:1055' | ||
| stderr 'level=error msg="Failed to query Prometheus configuration" error="Get \\"http://127.0.0.1:1055/api/v1/status/config\\": dial tcp 127.0.0.1:1055: connect: connection refused" uri=http://127.0.0.1:1055' | ||
| stderr 'rules/1.yml:2: query using prom completed without any results for foo \(promql/series\)' | ||
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||
| exec sh -c 'cat prometheus.pid | xargs kill' | ||
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| -- rules/1.yml -- | ||
| - record: aggregate | ||
| expr: sum(foo) without(job) | ||
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|
||
| -- .pint.hcl -- | ||
| prometheus "prom" { | ||
| uri = "http://127.0.0.1:1055" | ||
| failover = ["http://127.0.0.1:7055"] | ||
| timeout = "5s" | ||
| } | ||
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|
||
| -- prometheus.go -- | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "log" | ||
| "net" | ||
| "net/http" | ||
| "os" | ||
| "os/signal" | ||
| "strconv" | ||
| "syscall" | ||
| "time" | ||
| ) | ||
|
|
||
| func main() { | ||
| http.HandleFunc("/api/v1/status/config", func(w http.ResponseWriter, r *http.Request) { | ||
| w.WriteHeader(200) | ||
| w.Header().Set("Content-Type", "application/json") | ||
| _, _ = w.Write([]byte(`{"status":"success","data":{"yaml":"global:\n scrape_interval: 30s\n"}}`)) | ||
| }) | ||
|
|
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| http.HandleFunc("/api/v1/query", func(w http.ResponseWriter, r *http.Request) { | ||
| w.WriteHeader(200) | ||
| w.Header().Set("Content-Type", "application/json") | ||
| _, _ = w.Write([]byte(`{ | ||
| "status":"success", | ||
| "data":{ | ||
| "resultType":"vector", | ||
| "result":[] | ||
| } | ||
| }`)) | ||
| }) | ||
|
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||
| listener, err := net.Listen("tcp", "127.0.0.1:7055") | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
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| server := &http.Server{ | ||
| Addr: "127.0.0.1:7055", | ||
| } | ||
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| go func() { | ||
| _ = server.Serve(listener) | ||
| }() | ||
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| pid := os.Getpid() | ||
| err = os.WriteFile("prometheus.pid", []byte(strconv.Itoa(pid)), 0644) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
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||
| stop := make(chan os.Signal, 1) | ||
| signal.Notify(stop, os.Interrupt, syscall.SIGINT, syscall.SIGTERM) | ||
| go func() { | ||
| time.Sleep(time.Minute*2) | ||
| stop <- syscall.SIGTERM | ||
| }() | ||
| <-stop | ||
| ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) | ||
| defer cancel() | ||
| server.Shutdown(ctx) | ||
| } | ||
|
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||
| -- prometheus.sh -- | ||
| env GOCACHE=$TMPDIR go run prometheus.go |
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