Dragonfly2

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/*
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 *     Copyright 2020 The Dragonfly Authors
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package metrics
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import (
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	"net/http"
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	grpc_prometheus "github.com/grpc-ecosystem/go-grpc-prometheus"
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	"github.com/prometheus/client_golang/prometheus"
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	"github.com/prometheus/client_golang/prometheus/promauto"
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	"github.com/prometheus/client_golang/prometheus/promhttp"
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	"google.golang.org/grpc"
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	"d7y.io/dragonfly/v2/pkg/types"
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	"d7y.io/dragonfly/v2/trainer/config"
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	"d7y.io/dragonfly/v2/version"
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)
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// Variables declared for metrics.
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var (
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	TrainCount = promauto.NewCounter(prometheus.CounterOpts{
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		Namespace: types.MetricsNamespace,
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		Subsystem: types.TrainerMetricsName,
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		Name:      "training_total",
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		Help:      "Counter of the number of the training.",
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	})
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	TrainFailureCount = promauto.NewCounter(prometheus.CounterOpts{
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		Namespace: types.MetricsNamespace,
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		Subsystem: types.TrainerMetricsName,
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		Name:      "training_failure_total",
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		Help:      "Counter of the number of failed of the training.",
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	})
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	VersionGauge = promauto.NewGaugeVec(prometheus.GaugeOpts{
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		Namespace: types.MetricsNamespace,
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		Subsystem: types.TrainerMetricsName,
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		Name:      "version",
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		Help:      "Version info of the service.",
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	}, []string{"major", "minor", "git_version", "git_commit", "platform", "build_time", "go_version", "go_tags", "go_gcflags"})
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)
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func New(cfg *config.MetricsConfig, svr *grpc.Server) *http.Server {
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	grpc_prometheus.Register(svr)
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	mux := http.NewServeMux()
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	mux.Handle("/metrics", promhttp.Handler())
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	VersionGauge.WithLabelValues(version.Major, version.Minor, version.GitVersion, version.GitCommit, version.Platform, version.BuildTime, version.GoVersion, version.Gotags, version.Gogcflags).Set(1)
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	return &http.Server{
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		Addr:    cfg.Addr,
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		Handler: mux,
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	}
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}
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