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routers.go
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routers.go
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// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"net/http"
"github.com/gorilla/mux"
)
// Composed function registering routers for only distributed Erasure setup.
func registerDistErasureRouters(router *mux.Router, endpointServerPools EndpointServerPools) {
// Register storage REST router only if its a distributed setup.
registerStorageRESTHandlers(router, endpointServerPools)
// Register peer REST router only if its a distributed setup.
registerPeerRESTHandlers(router)
// Register bootstrap REST router for distributed setups.
registerBootstrapRESTHandlers(router)
// Register distributed namespace lock routers.
registerLockRESTHandlers(router)
}
// List of some generic handlers which are applied for all incoming requests.
var globalHandlers = []mux.MiddlewareFunc{
// The generic tracer needs to be the first handler
// to catch all requests returned early by any other handler
httpTracer,
// Auth handler verifies incoming authorization headers and
// routes them accordingly. Client receives a HTTP error for
// invalid/unsupported signatures.
//
// Validates all incoming requests to have a valid date header.
setAuthHandler,
// Redirect some pre-defined browser request paths to a static location prefix.
setBrowserRedirectHandler,
// Adds 'crossdomain.xml' policy handler to serve legacy flash clients.
setCrossDomainPolicy,
// Limits all body and header sizes to a maximum fixed limit
setRequestLimitHandler,
// Network statistics
setHTTPStatsHandler,
// Validate all the incoming requests.
setRequestValidityHandler,
// set x-amz-request-id header.
addCustomHeaders,
// Add upload forwarding handler for site replication
setUploadForwardingHandler,
// Add bucket forwarding handler
setBucketForwardingHandler,
// Add new handlers here.
}
// configureServer handler returns final handler for the http server.
func configureServerHandler(endpointServerPools EndpointServerPools) (http.Handler, error) {
// Initialize router. `SkipClean(true)` stops gorilla/mux from
// normalizing URL path minio/minio#3256
router := mux.NewRouter().SkipClean(true).UseEncodedPath()
// Initialize distributed NS lock.
if globalIsDistErasure {
registerDistErasureRouters(router, endpointServerPools)
}
// Add Admin router, all APIs are enabled in server mode.
registerAdminRouter(router, true)
// Add healthcheck router
registerHealthCheckRouter(router)
// Add server metrics router
registerMetricsRouter(router)
// Add STS router always.
registerSTSRouter(router)
// Add KMS router
registerKMSRouter(router)
// Add API router
registerAPIRouter(router)
router.Use(globalHandlers...)
return router, nil
}