79 lines
2.1 KiB
Go
79 lines
2.1 KiB
Go
// Copyright (c) Mainflux
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// SPDX-License-Identifier: Apache-2.0
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package mainflux
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import (
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"encoding/json"
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"net/http"
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)
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const (
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contentType = "Content-Type"
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contentTypeJSON = "application/health+json"
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svcStatus = "pass"
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description = " service"
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)
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var (
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// Version represents the last service git tag in git history.
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// It's meant to be set using go build ldflags:
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// -ldflags "-X 'github.com/mainflux/mainflux.Version=0.0.0'".
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Version = "0.0.0"
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// Commit represents the service git commit hash.
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// It's meant to be set using go build ldflags:
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// -ldflags "-X 'github.com/mainflux/mainflux.Commit=ffffffff'".
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Commit = "ffffffff"
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// BuildTime represetns the service build time.
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// It's meant to be set using go build ldflags:
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// -ldflags "-X 'github.com/mainflux/mainflux.BuildTime=1970-01-01_00:00:00'".
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BuildTime = "1970-01-01_00:00:00"
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)
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// HealthInfo contains version endpoint response.
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type HealthInfo struct {
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// Status contains service status.
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Status string `json:"status"`
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// Version contains current service version.
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Version string `json:"version"`
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// Commit represents the git hash commit.
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Commit string `json:"commit"`
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// Description contains service description.
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Description string `json:"description"`
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// BuildTime contains service build time.
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BuildTime string `json:"build_time"`
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// InstanceID contains the ID of the current service instance
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InstanceID string `json:"instance_id"`
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}
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// Health exposes an HTTP handler for retrieving service health.
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func Health(service, instanceID string) http.HandlerFunc {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Add(contentType, contentTypeJSON)
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if r.Method != http.MethodGet && r.Method != http.MethodHead {
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w.WriteHeader(http.StatusMethodNotAllowed)
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return
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}
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res := HealthInfo{
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Status: svcStatus,
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Version: Version,
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Commit: Commit,
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Description: service + description,
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BuildTime: BuildTime,
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InstanceID: instanceID,
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}
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w.WriteHeader(http.StatusOK)
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if err := json.NewEncoder(w).Encode(res); err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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}
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})
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}
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