-
Notifications
You must be signed in to change notification settings - Fork 1.1k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Signed-off-by: Alessandro Verzicco <[email protected]>
- Loading branch information
1 parent
72910e5
commit 3cfcd87
Showing
7 changed files
with
639 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,205 @@ | ||
| // Copyright 2021 The Prometheus Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package prober | ||
|
|
||
| import ( | ||
| "context" | ||
| "github.com/go-kit/kit/log" | ||
| "github.com/go-kit/kit/log/level" | ||
| "github.com/prometheus/blackbox_exporter/config" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| pconfig "github.com/prometheus/common/config" | ||
| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/credentials" | ||
| "google.golang.org/grpc/health/grpc_health_v1" | ||
| "google.golang.org/grpc/peer" | ||
| "google.golang.org/grpc/status" | ||
| "net" | ||
| "net/url" | ||
| "strings" | ||
| ) | ||
|
|
||
| // Health defines a health-check connection. | ||
| type Health interface { | ||
| Check(c context.Context, service string) (bool, codes.Code, *peer.Peer, error) | ||
| } | ||
|
|
||
| type healthClient struct { | ||
| client grpc_health_v1.HealthClient | ||
| conn *grpc.ClientConn | ||
| } | ||
|
|
||
| func NewGrpcHealthClient(conn *grpc.ClientConn) Health { | ||
| client := new(healthClient) | ||
| client.client = grpc_health_v1.NewHealthClient(conn) | ||
| client.conn = conn | ||
| return client | ||
| } | ||
|
|
||
| func (c *healthClient) Close() error { | ||
| return c.conn.Close() | ||
| } | ||
|
|
||
| func (c *healthClient) Check(ctx context.Context, service string) (bool, codes.Code, *peer.Peer, error) { | ||
| var res *grpc_health_v1.HealthCheckResponse | ||
| var err error | ||
| req := grpc_health_v1.HealthCheckRequest{ | ||
| Service: service, | ||
| } | ||
|
|
||
| serverPeer := new(peer.Peer) | ||
| res, err = c.client.Check(ctx, &req, grpc.Peer(serverPeer)) | ||
| if err == nil { | ||
| if res.GetStatus() == grpc_health_v1.HealthCheckResponse_SERVING { | ||
| return true, codes.OK, serverPeer, nil | ||
| } | ||
| return false, codes.OK, serverPeer, nil | ||
| } | ||
|
|
||
| returnStatus, _ := status.FromError(err) | ||
|
|
||
| return false, returnStatus.Code(), nil, err | ||
| } | ||
|
|
||
| func ProbeGRPC(ctx context.Context, target string, module config.Module, registry *prometheus.Registry, logger log.Logger) (success bool) { | ||
|
|
||
| var ( | ||
| durationGaugeVec = prometheus.NewGaugeVec(prometheus.GaugeOpts{ | ||
| Name: "probe_grpc_duration_seconds", | ||
| Help: "Duration of gRPC request by phase", | ||
| }, []string{"phase"}) | ||
|
|
||
| isSSLGauge = prometheus.NewGauge(prometheus.GaugeOpts{ | ||
| Name: "probe_grpc_ssl", | ||
| Help: "Indicates if SSL was used for the connection", | ||
| }) | ||
|
|
||
| statusCodeGauge = prometheus.NewGauge(prometheus.GaugeOpts{ | ||
| Name: "probe_grpc_status_code", | ||
| Help: "Response gRPC status code", | ||
| }) | ||
|
|
||
| probeSSLEarliestCertExpiryGauge = prometheus.NewGauge(prometheus.GaugeOpts{ | ||
| Name: "probe_ssl_earliest_cert_expiry", | ||
| Help: "Returns earliest SSL cert expiry in unixtime", | ||
| }) | ||
|
|
||
| probeTLSVersion = prometheus.NewGaugeVec(prometheus.GaugeOpts{ | ||
| Name: "probe_tls_version_info", | ||
| Help: "Contains the TLS version used", | ||
| }, | ||
| []string{"version"}, | ||
| ) | ||
| ) | ||
|
|
||
| for _, lv := range []string{"resolve"} { | ||
| durationGaugeVec.WithLabelValues(lv) | ||
| } | ||
|
|
||
| registry.MustRegister(durationGaugeVec) | ||
| registry.MustRegister(isSSLGauge) | ||
| registry.MustRegister(statusCodeGauge) | ||
| registry.MustRegister(probeSSLEarliestCertExpiryGauge) | ||
| registry.MustRegister(probeTLSVersion) | ||
|
|
||
| if !strings.HasPrefix(target, "http://") && !strings.HasPrefix(target, "https://") { | ||
| target = "http://" + target | ||
| } | ||
|
|
||
| targetURL, err := url.Parse(target) | ||
| if err != nil { | ||
| level.Error(logger).Log("msg", "Could not parse target URL", "err", err) | ||
| return false | ||
| } | ||
|
|
||
| targetHost, targetPort, err := net.SplitHostPort(targetURL.Host) | ||
| // If split fails, assuming it's a hostname without port part. | ||
| if err != nil { | ||
| targetHost = targetURL.Host | ||
| } | ||
|
|
||
| tlsConfig, err := pconfig.NewTLSConfig(&module.GRPC.TLSConfig) | ||
| if err != nil { | ||
| level.Error(logger).Log("msg", "Error creating TLS configuration", "err", err) | ||
| return false | ||
| } | ||
|
|
||
| ip, lookupTime, err := chooseProtocol(ctx, module.GRPC.PreferredIPProtocol, module.GRPC.IPProtocolFallback, targetHost, registry, logger) | ||
| if err != nil { | ||
| level.Error(logger).Log("msg", "Error resolving address", "err", err) | ||
| return false | ||
| } | ||
| durationGaugeVec.WithLabelValues("resolve").Add(lookupTime) | ||
|
|
||
| if len(tlsConfig.ServerName) == 0 { | ||
| // If there is no `server_name` in tls_config, use | ||
| // the hostname of the target. | ||
| tlsConfig.ServerName = targetHost | ||
| } | ||
|
|
||
| if targetPort == "" { | ||
| targetURL.Host = "[" + ip.String() + "]" | ||
| } else { | ||
| targetURL.Host = net.JoinHostPort(ip.String(), targetPort) | ||
| } | ||
|
|
||
| var opts []grpc.DialOption | ||
| target = targetHost + ":" + targetPort | ||
| if !module.GRPC.TLS { | ||
| level.Debug(logger).Log("msg", "Dialing GRPC without TLS") | ||
| opts = append(opts, grpc.WithInsecure()) | ||
| if len(targetPort) == 0 { | ||
| target = targetHost + ":80" | ||
| } | ||
| } else { | ||
| creds := credentials.NewTLS(tlsConfig) | ||
| opts = append(opts, grpc.WithTransportCredentials(creds)) | ||
| if len(targetPort) == 0 { | ||
| target = targetHost + ":443" | ||
| } | ||
| } | ||
|
|
||
| conn, err := grpc.Dial(target, opts...) | ||
|
|
||
| if err != nil { | ||
| level.Error(logger).Log("did not connect: %v", err) | ||
| } | ||
|
|
||
| client := NewGrpcHealthClient(conn) | ||
| defer conn.Close() | ||
| ok, statusCode, serverPeer, err := client.Check(context.Background(), module.GRPC.Service) | ||
|
|
||
| if serverPeer != nil { | ||
| tlsInfo, tlsOk := serverPeer.AuthInfo.(credentials.TLSInfo) | ||
| if tlsOk { | ||
| isSSLGauge.Set(float64(1)) | ||
| probeSSLEarliestCertExpiryGauge.Set(float64(getEarliestCertExpiry(&tlsInfo.State).Unix())) | ||
| probeTLSVersion.WithLabelValues(getTLSVersion(&tlsInfo.State)).Set(1) | ||
| } else { | ||
| isSSLGauge.Set(float64(0)) | ||
| } | ||
| } | ||
| statusCodeGauge.Set(float64(statusCode)) | ||
|
|
||
| if !ok || err != nil { | ||
| level.Error(logger).Log("msg", "can't connect grpc server:", "err", err) | ||
| success = false | ||
| } else { | ||
| level.Debug(logger).Log("connect the grpc server successfully") | ||
| success = true | ||
| } | ||
|
|
||
| return | ||
| } |
Oops, something went wrong.