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routers.go
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routers.go
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/*
* MinIO Cloud Storage, (C) 2015, 2016 MinIO, Inc.
*
* 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 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{
// filters HTTP headers which are treated as metadata and are reserved
// for internal use only.
filterReservedMetadata,
// Enforce rules specific for TLS requests
setSSETLSHandler,
// Auth handler verifies incoming authorization headers and
// routes them accordingly. Client receives a HTTP error for
// invalid/unsupported signatures.
setAuthHandler,
// Validates all incoming requests to have a valid date header.
setTimeValidityHandler,
// Adds cache control for all browser requests.
setBrowserCacheControlHandler,
// Validates if incoming request is for restricted buckets.
setReservedBucketHandler,
// 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 header sizes to a maximum fixed limit
setRequestHeaderSizeLimitHandler,
// Limits all requests size to a maximum fixed limit
setRequestSizeLimitHandler,
// Network statistics
setHTTPStatsHandler,
// Validate all the incoming requests.
setRequestValidityHandler,
// set HTTP security headers such as Content-Security-Policy.
addSecurityHeaders,
// set x-amz-request-id header.
addCustomHeaders,
// add redirect handler to redirect
// requests when object layer is not
// initialized.
setRedirectHandler,
// 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)
}
// Register web router when its enabled.
if globalBrowserEnabled {
if err := registerWebRouter(router); err != nil {
return nil, err
}
}
// Add Admin router, all APIs are enabled in server mode.
registerAdminRouter(router, true, true)
// Add healthcheck router
registerHealthCheckRouter(router)
// Add server metrics router
registerMetricsRouter(router)
// Add STS router always.
registerSTSRouter(router)
// Add API router
registerAPIRouter(router)
router.Use(GlobalHandlers...)
return router, nil
}