mirror of
https://github.com/grafana/grafana.git
synced 2024-11-29 12:14:08 -06:00
660 lines
25 KiB
Go
660 lines
25 KiB
Go
package api
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import (
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"context"
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"crypto/tls"
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"errors"
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"fmt"
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"net"
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"net/http"
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"os"
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"path"
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"path/filepath"
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"strings"
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"sync"
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"github.com/grafana/grafana/pkg/bus"
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"github.com/grafana/grafana/pkg/middleware/csrf"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"github.com/grafana/grafana/pkg/api/avatar"
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"github.com/grafana/grafana/pkg/api/routing"
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httpstatic "github.com/grafana/grafana/pkg/api/static"
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"github.com/grafana/grafana/pkg/components/simplejson"
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"github.com/grafana/grafana/pkg/framework/coremodel/registry"
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"github.com/grafana/grafana/pkg/infra/kvstore"
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"github.com/grafana/grafana/pkg/infra/localcache"
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"github.com/grafana/grafana/pkg/infra/log"
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"github.com/grafana/grafana/pkg/infra/remotecache"
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"github.com/grafana/grafana/pkg/infra/tracing"
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loginpkg "github.com/grafana/grafana/pkg/login"
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"github.com/grafana/grafana/pkg/login/social"
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"github.com/grafana/grafana/pkg/middleware"
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"github.com/grafana/grafana/pkg/models"
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"github.com/grafana/grafana/pkg/plugins"
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"github.com/grafana/grafana/pkg/plugins/plugincontext"
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"github.com/grafana/grafana/pkg/services/accesscontrol"
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"github.com/grafana/grafana/pkg/services/alerting"
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"github.com/grafana/grafana/pkg/services/cleanup"
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"github.com/grafana/grafana/pkg/services/comments"
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"github.com/grafana/grafana/pkg/services/contexthandler"
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"github.com/grafana/grafana/pkg/services/dashboards"
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"github.com/grafana/grafana/pkg/services/dashboardsnapshots"
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dashver "github.com/grafana/grafana/pkg/services/dashboardversion"
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"github.com/grafana/grafana/pkg/services/datasourceproxy"
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"github.com/grafana/grafana/pkg/services/datasources"
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"github.com/grafana/grafana/pkg/services/datasources/permissions"
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"github.com/grafana/grafana/pkg/services/encryption"
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"github.com/grafana/grafana/pkg/services/export"
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"github.com/grafana/grafana/pkg/services/featuremgmt"
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"github.com/grafana/grafana/pkg/services/hooks"
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"github.com/grafana/grafana/pkg/services/ldap"
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"github.com/grafana/grafana/pkg/services/libraryelements"
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"github.com/grafana/grafana/pkg/services/librarypanels"
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"github.com/grafana/grafana/pkg/services/live"
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"github.com/grafana/grafana/pkg/services/live/pushhttp"
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"github.com/grafana/grafana/pkg/services/login"
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"github.com/grafana/grafana/pkg/services/ngalert"
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"github.com/grafana/grafana/pkg/services/notifications"
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"github.com/grafana/grafana/pkg/services/plugindashboards"
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pluginSettings "github.com/grafana/grafana/pkg/services/pluginsettings/service"
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pref "github.com/grafana/grafana/pkg/services/preference"
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"github.com/grafana/grafana/pkg/services/provisioning"
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"github.com/grafana/grafana/pkg/services/query"
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"github.com/grafana/grafana/pkg/services/queryhistory"
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"github.com/grafana/grafana/pkg/services/quota"
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"github.com/grafana/grafana/pkg/services/rendering"
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"github.com/grafana/grafana/pkg/services/search"
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"github.com/grafana/grafana/pkg/services/searchusers"
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"github.com/grafana/grafana/pkg/services/secrets"
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secretsKV "github.com/grafana/grafana/pkg/services/secrets/kvstore"
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"github.com/grafana/grafana/pkg/services/serviceaccounts"
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"github.com/grafana/grafana/pkg/services/shorturls"
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"github.com/grafana/grafana/pkg/services/sqlstore"
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"github.com/grafana/grafana/pkg/services/star"
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"github.com/grafana/grafana/pkg/services/store"
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"github.com/grafana/grafana/pkg/services/teamguardian"
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"github.com/grafana/grafana/pkg/services/thumbs"
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"github.com/grafana/grafana/pkg/services/updatechecker"
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"github.com/grafana/grafana/pkg/setting"
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"github.com/grafana/grafana/pkg/web"
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)
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type HTTPServer struct {
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log log.Logger
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web *web.Mux
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context context.Context
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httpSrv *http.Server
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middlewares []web.Handler
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namedMiddlewares []routing.RegisterNamedMiddleware
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bus bus.Bus
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PluginContextProvider *plugincontext.Provider
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RouteRegister routing.RouteRegister
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RenderService rendering.Service
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Cfg *setting.Cfg
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Features *featuremgmt.FeatureManager
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SettingsProvider setting.Provider
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HooksService *hooks.HooksService
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CacheService *localcache.CacheService
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DataSourceCache datasources.CacheService
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AuthTokenService models.UserTokenService
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QuotaService *quota.QuotaService
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RemoteCacheService *remotecache.RemoteCache
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ProvisioningService provisioning.ProvisioningService
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Login login.Service
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License models.Licensing
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AccessControl accesscontrol.AccessControl
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DataProxy *datasourceproxy.DataSourceProxyService
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PluginRequestValidator models.PluginRequestValidator
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pluginClient plugins.Client
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pluginStore plugins.Store
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pluginManager plugins.Manager
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pluginDashboardService plugindashboards.Service
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pluginStaticRouteResolver plugins.StaticRouteResolver
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pluginErrorResolver plugins.ErrorResolver
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SearchService search.Service
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ShortURLService shorturls.Service
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QueryHistoryService queryhistory.Service
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Live *live.GrafanaLive
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LivePushGateway *pushhttp.Gateway
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ThumbService thumbs.Service
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ExportService export.ExportService
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StorageService store.HTTPStorageService
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ContextHandler *contexthandler.ContextHandler
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SQLStore sqlstore.Store
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AlertEngine *alerting.AlertEngine
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AlertNG *ngalert.AlertNG
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LibraryPanelService librarypanels.Service
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LibraryElementService libraryelements.Service
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SocialService social.Service
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Listener net.Listener
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EncryptionService encryption.Internal
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SecretsService secrets.Service
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remoteSecretsCheck secretsKV.UseRemoteSecretsPluginCheck
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DataSourcesService datasources.DataSourceService
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cleanUpService *cleanup.CleanUpService
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tracer tracing.Tracer
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grafanaUpdateChecker *updatechecker.GrafanaService
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pluginsUpdateChecker *updatechecker.PluginsService
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searchUsersService searchusers.Service
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ldapGroups ldap.Groups
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teamGuardian teamguardian.TeamGuardian
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queryDataService *query.Service
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serviceAccountsService serviceaccounts.Service
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authInfoService login.AuthInfoService
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authenticator loginpkg.Authenticator
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teamPermissionsService accesscontrol.TeamPermissionsService
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NotificationService *notifications.NotificationService
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dashboardService dashboards.DashboardService
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dashboardProvisioningService dashboards.DashboardProvisioningService
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folderService dashboards.FolderService
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DatasourcePermissionsService permissions.DatasourcePermissionsService
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commentsService *comments.Service
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AlertNotificationService *alerting.AlertNotificationService
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dashboardsnapshotsService dashboardsnapshots.Service
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PluginSettings *pluginSettings.Service
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AvatarCacheServer *avatar.AvatarCacheServer
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preferenceService pref.Service
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Csrf csrf.Service
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entityEventsService store.EntityEventsService
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folderPermissionsService accesscontrol.FolderPermissionsService
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dashboardPermissionsService accesscontrol.DashboardPermissionsService
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dashboardVersionService dashver.Service
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starService star.Service
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CoremodelRegistry *registry.Generic
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CoremodelStaticRegistry *registry.Static
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kvStore kvstore.KVStore
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secretsMigrator secrets.Migrator
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}
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type ServerOptions struct {
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Listener net.Listener
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}
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func ProvideHTTPServer(opts ServerOptions, cfg *setting.Cfg, routeRegister routing.RouteRegister, bus bus.Bus,
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renderService rendering.Service, licensing models.Licensing, hooksService *hooks.HooksService,
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cacheService *localcache.CacheService, sqlStore *sqlstore.SQLStore, alertEngine *alerting.AlertEngine,
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pluginRequestValidator models.PluginRequestValidator, pluginStaticRouteResolver plugins.StaticRouteResolver,
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pluginDashboardService plugindashboards.Service, pluginStore plugins.Store, pluginClient plugins.Client,
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pluginErrorResolver plugins.ErrorResolver, pluginManager plugins.Manager, settingsProvider setting.Provider,
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dataSourceCache datasources.CacheService, userTokenService models.UserTokenService,
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cleanUpService *cleanup.CleanUpService, shortURLService shorturls.Service, queryHistoryService queryhistory.Service,
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thumbService thumbs.Service, remoteCache *remotecache.RemoteCache, provisioningService provisioning.ProvisioningService,
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loginService login.Service, authenticator loginpkg.Authenticator, accessControl accesscontrol.AccessControl,
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dataSourceProxy *datasourceproxy.DataSourceProxyService, searchService *search.SearchService,
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live *live.GrafanaLive, livePushGateway *pushhttp.Gateway, plugCtxProvider *plugincontext.Provider,
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contextHandler *contexthandler.ContextHandler, features *featuremgmt.FeatureManager,
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alertNG *ngalert.AlertNG, libraryPanelService librarypanels.Service, libraryElementService libraryelements.Service,
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quotaService *quota.QuotaService, socialService social.Service, tracer tracing.Tracer, exportService export.ExportService,
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encryptionService encryption.Internal, grafanaUpdateChecker *updatechecker.GrafanaService,
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pluginsUpdateChecker *updatechecker.PluginsService, searchUsersService searchusers.Service,
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dataSourcesService datasources.DataSourceService, secretsService secrets.Service, queryDataService *query.Service,
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ldapGroups ldap.Groups, teamGuardian teamguardian.TeamGuardian, serviceaccountsService serviceaccounts.Service,
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authInfoService login.AuthInfoService, storageService store.HTTPStorageService,
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notificationService *notifications.NotificationService, dashboardService dashboards.DashboardService,
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dashboardProvisioningService dashboards.DashboardProvisioningService, folderService dashboards.FolderService,
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datasourcePermissionsService permissions.DatasourcePermissionsService, alertNotificationService *alerting.AlertNotificationService,
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dashboardsnapshotsService dashboardsnapshots.Service, commentsService *comments.Service, pluginSettings *pluginSettings.Service,
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avatarCacheServer *avatar.AvatarCacheServer, preferenceService pref.Service, entityEventsService store.EntityEventsService,
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teamsPermissionsService accesscontrol.TeamPermissionsService, folderPermissionsService accesscontrol.FolderPermissionsService,
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dashboardPermissionsService accesscontrol.DashboardPermissionsService, dashboardVersionService dashver.Service,
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starService star.Service, csrfService csrf.Service, coremodelRegistry *registry.Generic, coremodelStaticRegistry *registry.Static,
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kvStore kvstore.KVStore, secretsMigrator secrets.Migrator, remoteSecretsCheck secretsKV.UseRemoteSecretsPluginCheck,
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) (*HTTPServer, error) {
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web.Env = cfg.Env
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m := web.New()
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hs := &HTTPServer{
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Cfg: cfg,
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RouteRegister: routeRegister,
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bus: bus,
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RenderService: renderService,
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License: licensing,
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HooksService: hooksService,
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CacheService: cacheService,
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SQLStore: sqlStore,
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AlertEngine: alertEngine,
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PluginRequestValidator: pluginRequestValidator,
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pluginManager: pluginManager,
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pluginClient: pluginClient,
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pluginStore: pluginStore,
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pluginStaticRouteResolver: pluginStaticRouteResolver,
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pluginDashboardService: pluginDashboardService,
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pluginErrorResolver: pluginErrorResolver,
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grafanaUpdateChecker: grafanaUpdateChecker,
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pluginsUpdateChecker: pluginsUpdateChecker,
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SettingsProvider: settingsProvider,
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DataSourceCache: dataSourceCache,
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AuthTokenService: userTokenService,
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cleanUpService: cleanUpService,
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ShortURLService: shortURLService,
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QueryHistoryService: queryHistoryService,
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Features: features,
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ThumbService: thumbService,
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StorageService: storageService,
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RemoteCacheService: remoteCache,
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ProvisioningService: provisioningService,
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Login: loginService,
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AccessControl: accessControl,
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DataProxy: dataSourceProxy,
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SearchService: searchService,
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ExportService: exportService,
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Live: live,
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LivePushGateway: livePushGateway,
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PluginContextProvider: plugCtxProvider,
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ContextHandler: contextHandler,
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AlertNG: alertNG,
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LibraryPanelService: libraryPanelService,
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LibraryElementService: libraryElementService,
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QuotaService: quotaService,
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tracer: tracer,
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log: log.New("http.server"),
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web: m,
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Listener: opts.Listener,
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SocialService: socialService,
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EncryptionService: encryptionService,
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SecretsService: secretsService,
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remoteSecretsCheck: remoteSecretsCheck,
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DataSourcesService: dataSourcesService,
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searchUsersService: searchUsersService,
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ldapGroups: ldapGroups,
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teamGuardian: teamGuardian,
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queryDataService: queryDataService,
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serviceAccountsService: serviceaccountsService,
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authInfoService: authInfoService,
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authenticator: authenticator,
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NotificationService: notificationService,
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dashboardService: dashboardService,
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dashboardProvisioningService: dashboardProvisioningService,
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folderService: folderService,
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DatasourcePermissionsService: datasourcePermissionsService,
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commentsService: commentsService,
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teamPermissionsService: teamsPermissionsService,
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AlertNotificationService: alertNotificationService,
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dashboardsnapshotsService: dashboardsnapshotsService,
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PluginSettings: pluginSettings,
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AvatarCacheServer: avatarCacheServer,
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preferenceService: preferenceService,
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Csrf: csrfService,
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entityEventsService: entityEventsService,
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folderPermissionsService: folderPermissionsService,
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dashboardPermissionsService: dashboardPermissionsService,
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dashboardVersionService: dashboardVersionService,
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starService: starService,
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CoremodelRegistry: coremodelRegistry,
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CoremodelStaticRegistry: coremodelStaticRegistry,
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kvStore: kvStore,
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secretsMigrator: secretsMigrator,
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}
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if hs.Listener != nil {
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hs.log.Debug("Using provided listener")
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}
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hs.registerRoutes()
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// Register access control scope resolver for annotations
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hs.AccessControl.RegisterScopeAttributeResolver(AnnotationTypeScopeResolver())
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if err := hs.declareFixedRoles(); err != nil {
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return nil, err
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}
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return hs, nil
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}
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func (hs *HTTPServer) AddMiddleware(middleware web.Handler) {
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hs.middlewares = append(hs.middlewares, middleware)
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}
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func (hs *HTTPServer) AddNamedMiddleware(middleware routing.RegisterNamedMiddleware) {
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hs.namedMiddlewares = append(hs.namedMiddlewares, middleware)
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}
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func (hs *HTTPServer) Run(ctx context.Context) error {
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hs.context = ctx
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hs.applyRoutes()
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// Remove any square brackets enclosing IPv6 addresses, a format we support for backwards compatibility
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host := strings.TrimSuffix(strings.TrimPrefix(hs.Cfg.HTTPAddr, "["), "]")
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hs.httpSrv = &http.Server{
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Addr: net.JoinHostPort(host, hs.Cfg.HTTPPort),
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Handler: hs.web,
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ReadTimeout: hs.Cfg.ReadTimeout,
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}
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switch hs.Cfg.Protocol {
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case setting.HTTP2Scheme:
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if err := hs.configureHttp2(); err != nil {
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return err
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}
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case setting.HTTPSScheme:
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if err := hs.configureHttps(); err != nil {
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return err
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}
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default:
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}
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listener, err := hs.getListener()
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if err != nil {
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return err
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}
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hs.log.Info("HTTP Server Listen", "address", listener.Addr().String(), "protocol",
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hs.Cfg.Protocol, "subUrl", hs.Cfg.AppSubURL, "socket", hs.Cfg.SocketPath)
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var wg sync.WaitGroup
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wg.Add(1)
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// handle http shutdown on server context done
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go func() {
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defer wg.Done()
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<-ctx.Done()
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if err := hs.httpSrv.Shutdown(context.Background()); err != nil {
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hs.log.Error("Failed to shutdown server", "error", err)
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}
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}()
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switch hs.Cfg.Protocol {
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case setting.HTTPScheme, setting.SocketScheme:
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if err := hs.httpSrv.Serve(listener); err != nil {
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if errors.Is(err, http.ErrServerClosed) {
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hs.log.Debug("server was shutdown gracefully")
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return nil
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}
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return err
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}
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case setting.HTTP2Scheme, setting.HTTPSScheme:
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if err := hs.httpSrv.ServeTLS(listener, hs.Cfg.CertFile, hs.Cfg.KeyFile); err != nil {
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if errors.Is(err, http.ErrServerClosed) {
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hs.log.Debug("server was shutdown gracefully")
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return nil
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}
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return err
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}
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default:
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panic(fmt.Sprintf("Unhandled protocol %q", hs.Cfg.Protocol))
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}
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wg.Wait()
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return nil
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}
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func (hs *HTTPServer) getListener() (net.Listener, error) {
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if hs.Listener != nil {
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return hs.Listener, nil
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}
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switch hs.Cfg.Protocol {
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case setting.HTTPScheme, setting.HTTPSScheme, setting.HTTP2Scheme:
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listener, err := net.Listen("tcp", hs.httpSrv.Addr)
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if err != nil {
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return nil, fmt.Errorf("failed to open listener on address %s: %w", hs.httpSrv.Addr, err)
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}
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return listener, nil
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case setting.SocketScheme:
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listener, err := net.ListenUnix("unix", &net.UnixAddr{Name: hs.Cfg.SocketPath, Net: "unix"})
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if err != nil {
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return nil, fmt.Errorf("failed to open listener for socket %s: %w", hs.Cfg.SocketPath, err)
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}
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// Make socket writable by group
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// nolint:gosec
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if err := os.Chmod(hs.Cfg.SocketPath, 0660); err != nil {
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return nil, fmt.Errorf("failed to change socket permissions: %w", err)
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}
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return listener, nil
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default:
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hs.log.Error("Invalid protocol", "protocol", hs.Cfg.Protocol)
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return nil, fmt.Errorf("invalid protocol %q", hs.Cfg.Protocol)
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}
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}
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func (hs *HTTPServer) configureHttps() error {
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if hs.Cfg.CertFile == "" {
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return fmt.Errorf("cert_file cannot be empty when using HTTPS")
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}
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if hs.Cfg.KeyFile == "" {
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return fmt.Errorf("cert_key cannot be empty when using HTTPS")
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}
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if _, err := os.Stat(hs.Cfg.CertFile); os.IsNotExist(err) {
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return fmt.Errorf(`cannot find SSL cert_file at %q`, hs.Cfg.CertFile)
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}
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if _, err := os.Stat(hs.Cfg.KeyFile); os.IsNotExist(err) {
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return fmt.Errorf(`cannot find SSL key_file at %q`, hs.Cfg.KeyFile)
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}
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tlsCfg := &tls.Config{
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MinVersion: tls.VersionTLS12,
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CipherSuites: []uint16{
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tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
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tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
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tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
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tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
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tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
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tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
|
|
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
|
|
tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
|
|
tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
|
|
tls.TLS_RSA_WITH_AES_128_CBC_SHA,
|
|
tls.TLS_RSA_WITH_AES_256_CBC_SHA,
|
|
},
|
|
}
|
|
|
|
hs.httpSrv.TLSConfig = tlsCfg
|
|
hs.httpSrv.TLSNextProto = make(map[string]func(*http.Server, *tls.Conn, http.Handler))
|
|
|
|
return nil
|
|
}
|
|
|
|
func (hs *HTTPServer) configureHttp2() error {
|
|
if hs.Cfg.CertFile == "" {
|
|
return fmt.Errorf("cert_file cannot be empty when using HTTP2")
|
|
}
|
|
|
|
if hs.Cfg.KeyFile == "" {
|
|
return fmt.Errorf("cert_key cannot be empty when using HTTP2")
|
|
}
|
|
|
|
if _, err := os.Stat(hs.Cfg.CertFile); os.IsNotExist(err) {
|
|
return fmt.Errorf(`cannot find SSL cert_file at %q`, hs.Cfg.CertFile)
|
|
}
|
|
|
|
if _, err := os.Stat(hs.Cfg.KeyFile); os.IsNotExist(err) {
|
|
return fmt.Errorf(`cannot find SSL key_file at %q`, hs.Cfg.KeyFile)
|
|
}
|
|
|
|
tlsCfg := &tls.Config{
|
|
MinVersion: tls.VersionTLS12,
|
|
CipherSuites: []uint16{
|
|
tls.TLS_CHACHA20_POLY1305_SHA256,
|
|
tls.TLS_AES_128_GCM_SHA256,
|
|
tls.TLS_AES_256_GCM_SHA384,
|
|
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
|
|
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
|
|
tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
|
|
tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
|
|
tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
|
|
tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
|
|
},
|
|
NextProtos: []string{"h2", "http/1.1"},
|
|
}
|
|
|
|
hs.httpSrv.TLSConfig = tlsCfg
|
|
|
|
return nil
|
|
}
|
|
|
|
func (hs *HTTPServer) applyRoutes() {
|
|
// start with middlewares & static routes
|
|
hs.addMiddlewaresAndStaticRoutes()
|
|
// then add view routes & api routes
|
|
hs.RouteRegister.Register(hs.web, hs.namedMiddlewares...)
|
|
// then custom app proxy routes
|
|
hs.initAppPluginRoutes(hs.web)
|
|
// lastly not found route
|
|
hs.web.NotFound(middleware.ReqSignedIn, hs.NotFoundHandler)
|
|
}
|
|
|
|
func (hs *HTTPServer) addMiddlewaresAndStaticRoutes() {
|
|
m := hs.web
|
|
|
|
m.Use(middleware.RequestTracing(hs.tracer))
|
|
m.Use(middleware.RequestMetrics(hs.Features))
|
|
|
|
m.Use(middleware.Logger(hs.Cfg))
|
|
|
|
if hs.Cfg.EnableGzip {
|
|
m.UseMiddleware(middleware.Gziper())
|
|
}
|
|
|
|
m.Use(middleware.Recovery(hs.Cfg))
|
|
m.UseMiddleware(hs.Csrf.Middleware(hs.log))
|
|
|
|
hs.mapStatic(m, hs.Cfg.StaticRootPath, "build", "public/build")
|
|
hs.mapStatic(m, hs.Cfg.StaticRootPath, "", "public", "/public/views/swagger.html")
|
|
hs.mapStatic(m, hs.Cfg.StaticRootPath, "robots.txt", "robots.txt")
|
|
|
|
if hs.Cfg.ImageUploadProvider == "local" {
|
|
hs.mapStatic(m, hs.Cfg.ImagesDir, "", "/public/img/attachments")
|
|
}
|
|
|
|
m.Use(middleware.AddDefaultResponseHeaders(hs.Cfg))
|
|
|
|
if hs.Cfg.ServeFromSubPath && hs.Cfg.AppSubURL != "" {
|
|
m.SetURLPrefix(hs.Cfg.AppSubURL)
|
|
}
|
|
|
|
m.UseMiddleware(web.Renderer(filepath.Join(hs.Cfg.StaticRootPath, "views"), "[[", "]]"))
|
|
|
|
// These endpoints are used for monitoring the Grafana instance
|
|
// and should not be redirected or rejected.
|
|
m.Use(hs.healthzHandler)
|
|
m.Use(hs.apiHealthHandler)
|
|
m.Use(hs.metricsEndpoint)
|
|
m.Use(hs.pluginMetricsEndpoint)
|
|
|
|
m.Use(hs.ContextHandler.Middleware)
|
|
m.Use(middleware.OrgRedirect(hs.Cfg, hs.SQLStore))
|
|
m.Use(accesscontrol.LoadPermissionsMiddleware(hs.AccessControl))
|
|
|
|
// needs to be after context handler
|
|
if hs.Cfg.EnforceDomain {
|
|
m.Use(middleware.ValidateHostHeader(hs.Cfg))
|
|
}
|
|
|
|
m.Use(middleware.HandleNoCacheHeader)
|
|
m.UseMiddleware(middleware.AddCSPHeader(hs.Cfg, hs.log))
|
|
|
|
for _, mw := range hs.middlewares {
|
|
m.Use(mw)
|
|
}
|
|
}
|
|
|
|
func (hs *HTTPServer) metricsEndpoint(ctx *web.Context) {
|
|
if !hs.Cfg.MetricsEndpointEnabled {
|
|
return
|
|
}
|
|
|
|
if ctx.Req.Method != http.MethodGet || ctx.Req.URL.Path != "/metrics" {
|
|
return
|
|
}
|
|
|
|
if hs.metricsEndpointBasicAuthEnabled() && !BasicAuthenticatedRequest(ctx.Req, hs.Cfg.MetricsEndpointBasicAuthUsername, hs.Cfg.MetricsEndpointBasicAuthPassword) {
|
|
ctx.Resp.WriteHeader(http.StatusUnauthorized)
|
|
return
|
|
}
|
|
|
|
promhttp.
|
|
HandlerFor(prometheus.DefaultGatherer, promhttp.HandlerOpts{EnableOpenMetrics: true}).
|
|
ServeHTTP(ctx.Resp, ctx.Req)
|
|
}
|
|
|
|
// healthzHandler always return 200 - Ok if Grafana's web server is running
|
|
func (hs *HTTPServer) healthzHandler(ctx *web.Context) {
|
|
notHeadOrGet := ctx.Req.Method != http.MethodGet && ctx.Req.Method != http.MethodHead
|
|
if notHeadOrGet || ctx.Req.URL.Path != "/healthz" {
|
|
return
|
|
}
|
|
|
|
ctx.Resp.WriteHeader(200)
|
|
_, err := ctx.Resp.Write([]byte("Ok"))
|
|
if err != nil {
|
|
hs.log.Error("could not write to response", "err", err)
|
|
}
|
|
}
|
|
|
|
// apiHealthHandler will return ok if Grafana's web server is running and it
|
|
// can access the database. If the database cannot be accessed it will return
|
|
// http status code 503.
|
|
func (hs *HTTPServer) apiHealthHandler(ctx *web.Context) {
|
|
notHeadOrGet := ctx.Req.Method != http.MethodGet && ctx.Req.Method != http.MethodHead
|
|
if notHeadOrGet || ctx.Req.URL.Path != "/api/health" {
|
|
return
|
|
}
|
|
|
|
data := simplejson.New()
|
|
data.Set("database", "ok")
|
|
if !hs.Cfg.AnonymousHideVersion {
|
|
data.Set("version", hs.Cfg.BuildVersion)
|
|
data.Set("commit", hs.Cfg.BuildCommit)
|
|
}
|
|
|
|
if !hs.databaseHealthy(ctx.Req.Context()) {
|
|
data.Set("database", "failing")
|
|
ctx.Resp.Header().Set("Content-Type", "application/json; charset=UTF-8")
|
|
ctx.Resp.WriteHeader(503)
|
|
} else {
|
|
ctx.Resp.Header().Set("Content-Type", "application/json; charset=UTF-8")
|
|
ctx.Resp.WriteHeader(200)
|
|
}
|
|
|
|
dataBytes, err := data.EncodePretty()
|
|
if err != nil {
|
|
hs.log.Error("Failed to encode data", "err", err)
|
|
return
|
|
}
|
|
|
|
if _, err := ctx.Resp.Write(dataBytes); err != nil {
|
|
hs.log.Error("Failed to write to response", "err", err)
|
|
}
|
|
}
|
|
|
|
func (hs *HTTPServer) mapStatic(m *web.Mux, rootDir string, dir string, prefix string, exclude ...string) {
|
|
headers := func(c *web.Context) {
|
|
c.Resp.Header().Set("Cache-Control", "public, max-age=3600")
|
|
}
|
|
|
|
if prefix == "public/build" {
|
|
headers = func(c *web.Context) {
|
|
c.Resp.Header().Set("Cache-Control", "public, max-age=31536000")
|
|
}
|
|
}
|
|
|
|
if hs.Cfg.Env == setting.Dev {
|
|
headers = func(c *web.Context) {
|
|
c.Resp.Header().Set("Cache-Control", "max-age=0, must-revalidate, no-cache")
|
|
}
|
|
}
|
|
|
|
m.Use(httpstatic.Static(
|
|
path.Join(rootDir, dir),
|
|
httpstatic.StaticOptions{
|
|
SkipLogging: true,
|
|
Prefix: prefix,
|
|
AddHeaders: headers,
|
|
Exclude: exclude,
|
|
},
|
|
))
|
|
}
|
|
|
|
func (hs *HTTPServer) metricsEndpointBasicAuthEnabled() bool {
|
|
return hs.Cfg.MetricsEndpointBasicAuthUsername != "" && hs.Cfg.MetricsEndpointBasicAuthPassword != ""
|
|
}
|