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1038 lines (890 loc) · 30.4 KB
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/*
* Minio Cloud Storage, (C) 2016, 2017 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 (
"bytes"
"encoding/json"
"encoding/xml"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"path"
"strconv"
"sync"
"time"
)
const (
minioAdminOpHeader = "X-Minio-Operation"
minioConfigTmpFormat = "config-%s.json"
)
// Type-safe query params.
type mgmtQueryKey string
// Only valid query params for mgmt admin APIs.
const (
mgmtBucket mgmtQueryKey = "bucket"
mgmtObject mgmtQueryKey = "object"
mgmtPrefix mgmtQueryKey = "prefix"
mgmtLockDuration mgmtQueryKey = "duration"
mgmtDelimiter mgmtQueryKey = "delimiter"
mgmtMarker mgmtQueryKey = "marker"
mgmtKeyMarker mgmtQueryKey = "key-marker"
mgmtMaxKey mgmtQueryKey = "max-key"
mgmtDryRun mgmtQueryKey = "dry-run"
mgmtUploadIDMarker mgmtQueryKey = "upload-id-marker"
mgmtMaxUploads mgmtQueryKey = "max-uploads"
mgmtUploadID mgmtQueryKey = "upload-id"
)
// ServerVersion - server version
type ServerVersion struct {
Version string `json:"version"`
CommitID string `json:"commitID"`
}
// ServerStatus - contains the response of service status API
type ServerStatus struct {
ServerVersion ServerVersion `json:"serverVersion"`
Uptime time.Duration `json:"uptime"`
}
// ServiceStatusHandler - GET /?service
// HTTP header x-minio-operation: status
// ----------
// Fetches server status information like total disk space available
// to use, online disks, offline disks and quorum threshold.
func (adminAPI adminAPIHandlers) ServiceStatusHandler(w http.ResponseWriter, r *http.Request) {
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Fetch server version
serverVersion := ServerVersion{Version: Version, CommitID: CommitID}
// Fetch uptimes from all peers. This may fail to due to lack
// of read-quorum availability.
uptime, err := getPeerUptimes(globalAdminPeers)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
errorIf(err, "Possibly failed to get uptime from majority of servers.")
return
}
// Create API response
serverStatus := ServerStatus{
ServerVersion: serverVersion,
Uptime: uptime,
}
// Marshal API response
jsonBytes, err := json.Marshal(serverStatus)
if err != nil {
writeErrorResponse(w, ErrInternalError, r.URL)
errorIf(err, "Failed to marshal storage info into json.")
return
}
// Reply with storage information (across nodes in a
// distributed setup) as json.
writeSuccessResponseJSON(w, jsonBytes)
}
// ServiceRestartHandler - POST /?service
// HTTP header x-minio-operation: restart
// ----------
// Restarts minio server gracefully. In a distributed setup, restarts
// all the servers in the cluster.
func (adminAPI adminAPIHandlers) ServiceRestartHandler(w http.ResponseWriter, r *http.Request) {
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Reply to the client before restarting minio server.
writeSuccessResponseHeadersOnly(w)
sendServiceCmd(globalAdminPeers, serviceRestart)
}
// setCredsReq request
type setCredsReq struct {
Username string `xml:"username"`
Password string `xml:"password"`
}
// ServiceCredsHandler - POST /?service
// HTTP header x-minio-operation: creds
// ----------
// Update credentials in a minio server. In a distributed setup, update all the servers
// in the cluster.
func (adminAPI adminAPIHandlers) ServiceCredentialsHandler(w http.ResponseWriter, r *http.Request) {
// Authenticate request
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Avoid setting new credentials when they are already passed
// by the environment.
if globalIsEnvCreds {
writeErrorResponse(w, ErrMethodNotAllowed, r.URL)
return
}
// Load request body
inputData, err := ioutil.ReadAll(r.Body)
if err != nil {
writeErrorResponse(w, ErrInternalError, r.URL)
return
}
// Unmarshal request body
var req setCredsReq
err = xml.Unmarshal(inputData, &req)
if err != nil {
errorIf(err, "Cannot unmarshal credentials request")
writeErrorResponse(w, ErrMalformedXML, r.URL)
return
}
creds, err := createCredential(req.Username, req.Password)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Notify all other Minio peers to update credentials
updateErrs := updateCredsOnPeers(creds)
for peer, err := range updateErrs {
errorIf(err, "Unable to update credentials on peer %s.", peer)
}
// Update local credentials in memory.
prevCred := serverConfig.SetCredential(creds)
// Save credentials to config file
if err = serverConfig.Save(); err != nil {
// Save the current creds when failed to update.
serverConfig.SetCredential(prevCred)
errorIf(err, "Unable to update the config with new credentials.")
writeErrorResponse(w, ErrInternalError, r.URL)
return
}
// At this stage, the operation is successful, return 200 OK
w.WriteHeader(http.StatusOK)
}
// ServerProperties holds some server information such as, version, region
// uptime, etc..
type ServerProperties struct {
Uptime time.Duration `json:"uptime"`
Version string `json:"version"`
CommitID string `json:"commitID"`
Region string `json:"region"`
SQSARN []string `json:"sqsARN"`
}
// ServerConnStats holds transferred bytes from/to the server
type ServerConnStats struct {
TotalInputBytes uint64 `json:"transferred"`
TotalOutputBytes uint64 `json:"received"`
Throughput uint64 `json:"throughput,omitempty"`
}
// ServerHTTPMethodStats holds total number of HTTP operations from/to the server,
// including the average duration the call was spent.
type ServerHTTPMethodStats struct {
Count uint64 `json:"count"`
AvgDuration string `json:"avgDuration"`
}
// ServerHTTPStats holds all type of http operations performed to/from the server
// including their average execution time.
type ServerHTTPStats struct {
TotalHEADStats ServerHTTPMethodStats `json:"totalHEADs"`
SuccessHEADStats ServerHTTPMethodStats `json:"successHEADs"`
TotalGETStats ServerHTTPMethodStats `json:"totalGETs"`
SuccessGETStats ServerHTTPMethodStats `json:"successGETs"`
TotalPUTStats ServerHTTPMethodStats `json:"totalPUTs"`
SuccessPUTStats ServerHTTPMethodStats `json:"successPUTs"`
TotalPOSTStats ServerHTTPMethodStats `json:"totalPOSTs"`
SuccessPOSTStats ServerHTTPMethodStats `json:"successPOSTs"`
TotalDELETEStats ServerHTTPMethodStats `json:"totalDELETEs"`
SuccessDELETEStats ServerHTTPMethodStats `json:"successDELETEs"`
}
// ServerInfoData holds storage, connections and other
// information of a given server.
type ServerInfoData struct {
StorageInfo StorageInfo `json:"storage"`
ConnStats ServerConnStats `json:"network"`
HTTPStats ServerHTTPStats `json:"http"`
Properties ServerProperties `json:"server"`
}
// ServerInfo holds server information result of one node
type ServerInfo struct {
Error string `json:"error"`
Addr string `json:"addr"`
Data *ServerInfoData `json:"data"`
}
// ServerInfoHandler - GET /?info
// ----------
// Get server information
func (adminAPI adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Request) {
// Authenticate request
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Web service response
reply := make([]ServerInfo, len(globalAdminPeers))
var wg sync.WaitGroup
// Gather server information for all nodes
for i, p := range globalAdminPeers {
wg.Add(1)
// Gather information from a peer in a goroutine
go func(idx int, peer adminPeer) {
defer wg.Done()
// Initialize server info at index
reply[idx] = ServerInfo{Addr: peer.addr}
serverInfoData, err := peer.cmdRunner.ServerInfoData()
if err != nil {
errorIf(err, "Unable to get server info from %s.", peer.addr)
reply[idx].Error = err.Error()
return
}
reply[idx].Data = &serverInfoData
}(i, p)
}
wg.Wait()
// Marshal API response
jsonBytes, err := json.Marshal(reply)
if err != nil {
writeErrorResponse(w, ErrInternalError, r.URL)
errorIf(err, "Failed to marshal storage info into json.")
return
}
// Reply with storage information (across nodes in a
// distributed setup) as json.
writeSuccessResponseJSON(w, jsonBytes)
}
// validateLockQueryParams - Validates query params for list/clear locks management APIs.
func validateLockQueryParams(vars url.Values) (string, string, time.Duration, APIErrorCode) {
bucket := vars.Get(string(mgmtBucket))
prefix := vars.Get(string(mgmtPrefix))
durationStr := vars.Get(string(mgmtLockDuration))
// N B empty bucket name is invalid
if !IsValidBucketName(bucket) {
return "", "", time.Duration(0), ErrInvalidBucketName
}
// empty prefix is valid.
if !IsValidObjectPrefix(prefix) {
return "", "", time.Duration(0), ErrInvalidObjectName
}
// If older-than parameter was empty then set it to 0s to list
// all locks older than now.
if durationStr == "" {
durationStr = "0s"
}
duration, err := time.ParseDuration(durationStr)
if err != nil {
errorIf(err, "Failed to parse duration passed as query value.")
return "", "", time.Duration(0), ErrInvalidDuration
}
return bucket, prefix, duration, ErrNone
}
// ListLocksHandler - GET /?lock&bucket=mybucket&prefix=myprefix&duration=duration
// - bucket is a mandatory query parameter
// - prefix and older-than are optional query parameters
// HTTP header x-minio-operation: list
// ---------
// Lists locks held on a given bucket, prefix and duration it was held for.
func (adminAPI adminAPIHandlers) ListLocksHandler(w http.ResponseWriter, r *http.Request) {
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
vars := r.URL.Query()
bucket, prefix, duration, adminAPIErr := validateLockQueryParams(vars)
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Fetch lock information of locks matching bucket/prefix that
// are available for longer than duration.
volLocks, err := listPeerLocksInfo(globalAdminPeers, bucket, prefix, duration)
if err != nil {
writeErrorResponse(w, ErrInternalError, r.URL)
errorIf(err, "Failed to fetch lock information from remote nodes.")
return
}
// Marshal list of locks as json.
jsonBytes, err := json.Marshal(volLocks)
if err != nil {
writeErrorResponse(w, ErrInternalError, r.URL)
errorIf(err, "Failed to marshal lock information into json.")
return
}
// Reply with list of locks held on bucket, matching prefix
// held longer than duration supplied, as json.
writeSuccessResponseJSON(w, jsonBytes)
}
// ClearLocksHandler - POST /?lock&bucket=mybucket&prefix=myprefix&duration=duration
// - bucket is a mandatory query parameter
// - prefix and older-than are optional query parameters
// HTTP header x-minio-operation: clear
// ---------
// Clear locks held on a given bucket, prefix and duration it was held for.
func (adminAPI adminAPIHandlers) ClearLocksHandler(w http.ResponseWriter, r *http.Request) {
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
vars := r.URL.Query()
bucket, prefix, duration, adminAPIErr := validateLockQueryParams(vars)
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Fetch lock information of locks matching bucket/prefix that
// are held for longer than duration.
volLocks, err := listPeerLocksInfo(globalAdminPeers, bucket, prefix, duration)
if err != nil {
writeErrorResponse(w, ErrInternalError, r.URL)
errorIf(err, "Failed to fetch lock information from remote nodes.")
return
}
// Marshal list of locks as json.
jsonBytes, err := json.Marshal(volLocks)
if err != nil {
writeErrorResponse(w, ErrInternalError, r.URL)
errorIf(err, "Failed to marshal lock information into json.")
return
}
// Remove lock matching bucket/prefix held longer than duration.
for _, volLock := range volLocks {
globalNSMutex.ForceUnlock(volLock.Bucket, volLock.Object)
}
// Reply with list of locks cleared, as json.
writeSuccessResponseJSON(w, jsonBytes)
}
// ListUploadsHealHandler - similar to listObjectsHealHandler
// GET
// /?heal&bucket=mybucket&prefix=myprefix&key-marker=mymarker&upload-id-marker=myuploadid&delimiter=mydelimiter&max-uploads=1000
// - bucket is mandatory query parameter
// - rest are optional query parameters List upto maxKey objects that
// need healing in a given bucket matching the given prefix.
func (adminAPI adminAPIHandlers) ListUpload
8
sHealHan
10BC8
dler(w http.ResponseWriter, r *http.Request) {
// Get object layer instance.
objLayer := newObjectLayerFn()
if objLayer == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
return
}
// Validate request signature.
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Validate query params.
vars := r.URL.Query()
bucket := vars.Get(string(mgmtBucket))
prefix, keyMarker, uploadIDMarker, delimiter, maxUploads, _ := getBucketMultipartResources(r.URL.Query())
if err := checkListMultipartArgs(bucket, prefix, keyMarker, uploadIDMarker, delimiter, objLayer); err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
if maxUploads <= 0 || maxUploads > maxUploadsList {
writeErrorResponse(w, ErrInvalidMaxUploads, r.URL)
return
}
// Get the list objects to be healed.
listMultipartInfos, err := objLayer.ListUploadsHeal(bucket, prefix,
keyMarker, uploadIDMarker, delimiter, maxUploads)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
listResponse := generateListMultipartUploadsResponse(bucket, listMultipartInfos)
// Write success response.
writeSuccessResponseXML(w, encodeResponse(listResponse))
}
// extractListObjectsHealQuery - Validates query params for heal objects list management API.
func extractListObjectsHealQuery(vars url.Values) (string, string, string, string, int, APIErrorCode) {
bucket := vars.Get(string(mgmtBucket))
prefix := vars.Get(string(mgmtPrefix))
marker := vars.Get(string(mgmtMarker))
delimiter := vars.Get(string(mgmtDelimiter))
maxKeyStr := vars.Get(string(mgmtMaxKey))
// N B empty bucket name is invalid
if !IsValidBucketName(bucket) {
return "", "", "", "", 0, ErrInvalidBucketName
}
// empty prefix is valid.
if !IsValidObjectPrefix(prefix) {
return "", "", "", "", 0, ErrInvalidObjectName
}
// check if maxKey is a valid integer, if present.
var maxKey int
var err error
if maxKeyStr != "" {
if maxKey, err = strconv.Atoi(maxKeyStr); err != nil {
return "", "", "", "", 0, ErrInvalidMaxKeys
}
}
// Validate prefix, marker, delimiter and maxKey.
apiErr := validateListObjectsArgs(prefix, marker, delimiter, maxKey)
if apiErr != ErrNone {
return "", "", "", "", 0, apiErr
}
return bucket, prefix, marker, delimiter, maxKey, ErrNone
}
// ListObjectsHealHandler - GET /?heal&bucket=mybucket&prefix=myprefix&marker=mymarker&delimiter=&mydelimiter&maxKey=1000
// - bucket is mandatory query parameter
// - rest are optional query parameters
// List upto maxKey objects that need healing in a given bucket matching the given prefix.
func (adminAPI adminAPIHandlers) ListObjectsHealHandler(w http.ResponseWriter, r *http.Request) {
// Get object layer instance.
objLayer := newObjectLayerFn()
if objLayer == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
return
}
// Validate request signature.
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Validate query params.
vars := r.URL.Query()
bucket, prefix, marker, delimiter, maxKey, adminAPIErr := extractListObjectsHealQuery(vars)
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Get the list objects to be healed.
objectInfos, err := objLayer.ListObjectsHeal(bucket, prefix, marker, delimiter, maxKey)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
listResponse := generateListObjectsV1Response(bucket, prefix, marker, delimiter, maxKey, objectInfos)
// Write success response.
writeSuccessResponseXML(w, encodeResponse(listResponse))
}
// ListBucketsHealHandler - GET /?heal
func (adminAPI adminAPIHandlers) ListBucketsHealHandler(w http.ResponseWriter, r *http.Request) {
// Get object layer instance.
objLayer := newObjectLayerFn()
if objLayer == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
return
}
// Validate request signature.
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Get the list buckets to be healed.
bucketsInfo, err := objLayer.ListBucketsHeal()
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
listResponse := generateListBucketsResponse(bucketsInfo)
// Write success response.
writeSuccessResponseXML(w, encodeResponse(listResponse))
}
// HealBucketHandler - POST /?heal&bucket=mybucket&dry-run
// - x-minio-operation = bucket
// - bucket is mandatory query parameter
// Heal a given bucket, if present.
func (adminAPI adminAPIHandlers) HealBucketHandler(w http.ResponseWriter, r *http.Request) {
// Get object layer instance.
objLayer := newObjectLayerFn()
if objLayer == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
return
}
// Validate request signature.
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Validate bucket name and check if it exists.
vars := r.URL.Query()
bucket := vars.Get(string(mgmtBucket))
if err := checkBucketExist(bucket, objLayer); err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// if dry-run is present in query-params, then only perform validations and return success.
if isDryRun(vars) {
writeSuccessResponseHeadersOnly(w)
return
}
// Heal the given bucket.
err := objLayer.HealBucket(bucket)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Return 200 on success.
writeSuccessResponseHeadersOnly(w)
}
// isDryRun - returns true if dry-run query param was set and false otherwise.
// otherwise.
func isDryRun(qval url.Values) bool {
if _, dryRun := qval[string(mgmtDryRun)]; dryRun {
return true
}
return false
}
// healResult - represents result of a heal operation like
// heal-object, heal-upload.
type healResult struct {
State healState `json:"state"`
}
// healState - different states of heal operation
type healState int
const (
// healNone - none of the disks healed
healNone healState = iota
// healPartial - some disks were healed, others were offline
healPartial
// healOK - all disks were healed
healOK
)
// newHealResult - returns healResult given number of disks healed and
// number of disks offline
func newHealResult(numHealedDisks, numOfflineDisks int) healResult {
var state healState
switch {
case numHealedDisks == 0:
state = healNone
case numOfflineDisks > 0:
state = healPartial
default:
state = healOK
}
return healResult{State: state}
}
// HealObjectHandler - POST /?heal&bucket=mybucket&object=myobject&dry-run
// - x-minio-operation = object
// - bucket and object are both mandatory query parameters
// Heal a given object, if present.
func (adminAPI adminAPIHandlers) HealObjectHandler(w http.ResponseWriter, r *http.Request) {
// Get object layer instance.
objLayer := newObjectLayerFn()
if objLayer == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
return
}
// Validate request signature.
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
vars := r.URL.Query()
bucket := vars.Get(string(mgmtBucket))
object := vars.Get(string(mgmtObject))
// Validate bucket and object names.
if err := checkBucketAndObjectNames(bucket, object); err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Check if object exists.
if _, err := objLayer.GetObjectInfo(bucket, object); err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// if dry-run is set in query params then perform validations
// and return success.
if isDryRun(vars) {
writeSuccessResponseHeadersOnly(w)
return
}
numOfflineDisks, numHealedDisks, err := objLayer.HealObject(bucket, object)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
jsonBytes, err := json.Marshal(newHealResult(numHealedDisks, numOfflineDisks))
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Return 200 on success.
writeSuccessResponseJSON(w, jsonBytes)
}
// HealUploadHandler - POST /?heal&bucket=mybucket&object=myobject&upload-id=myuploadID&dry-run
// - x-minio-operation = upload
// - bucket, object and upload-id are mandatory query parameters
// Heal a given upload, if present.
func (adminAPI adminAPIHandlers) HealUploadHandler(w http.ResponseWriter, r *http.Request) {
// Get object layer instance.
objLayer := newObjectLayerFn()
if objLayer == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
return
}
// Validate request signature.
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
vars := r.URL.Query()
bucket := vars.Get(string(mgmtBucket))
object := vars.Get(string(mgmtObject))
uploadID := vars.Get(string(mgmtUploadID))
uploadObj := path.Join(bucket, object, uploadID)
// Validate bucket and object names as supplied via query
// parameters.
if err := checkBucketAndObjectNames(bucket, object); err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Validate the bucket and object w.r.t backend representation
// of an upload.
if err := checkBucketAndObjectNames(minioMetaMultipartBucket,
uploadObj); err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Check if upload exists.
if _, err := objLayer.GetObjectInfo(minioMetaMultipartBucket,
uploadObj); err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// if dry-run is set in query params then perform validations
// and return success.
if isDryRun(vars) {
writeSuccessResponseHeadersOnly(w)
return
}
//We are able to use HealObject for healing an upload since an
//ongoing upload has the same backend representation as an
//object. The 'object' corresponding to a given bucket,
//object and uploadID is
//.minio.sys/multipart/bucket/object/uploadID.
numOfflineDisks, numHealedDisks, err := objLayer.HealObject(minioMetaMultipartBucket, uploadObj)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
jsonBytes, err := json.Marshal(newHealResult(numHealedDisks, numOfflineDisks))
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Return 200 on success.
writeSuccessResponseJSON(w, jsonBytes)
}
// HealFormatHandler - POST /?heal&dry-run
// - x-minio-operation = format
// - bucket and object are both mandatory query parameters
// Heal a given object, if present.
func (adminAPI adminAPIHandlers) HealFormatHandler(w http.ResponseWriter, r *http.Request) {
// Get current object layer instance.
objectAPI := newObjectLayerFn()
if objectAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
return
}
// Validate request signature.
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Check if this setup is an erasure code backend, since
// heal-format is only applicable to single node XL and
// distributed XL setup.
if !globalIsXL {
writeErrorResponse(w, ErrNotImplemented, r.URL)
return
}
// if dry-run is set in query-params, return success as
// validations are successful so far.
vars := r.URL.Query()
if isDryRun(vars) {
writeSuccessResponseHeadersOnly(w)
return
}
// Create a new set of storage instances to heal format.json.
bootstrapDisks, err := initStorageDisks(globalEndpoints)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Heal format.json on available storage.
err = healFormatXL(bootstrapDisks)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Instantiate new object layer with newly formatted storage.
newObjectAPI, err := newXLObjects(bootstrapDisks)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
// Set object layer with newly formatted storage to globalObjectAPI.
globalObjLayerMutex.Lock()
globalObjectAPI = newObjectAPI
globalObjLayerMutex.Unlock()
// Shutdown storage belonging to old object layer instance.
objectAPI.Shutdown()
// Inform peers to reinitialize storage with newly formatted storage.
reInitPeerDisks(globalAdminPeers)
// Return 200 on success.
writeSuccessResponseHeadersOnly(w)
}
// GetConfigHandler - GET /?config
// - x-minio-operation = get
// Get config.json of this minio setup.
func (adminAPI adminAPIHandlers) GetConfigHandler(w http.ResponseWriter, r *http.Request) {
// Validate request signature.
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// check if objectLayer is initialized, if not return.
if newObjectLayerFn() == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
return
}
// Get config.json from all nodes. In a single node setup, it
// returns local config.json.
configBytes, err := getPeerConfig(globalAdminPeers)
if err != nil {
errorIf(err, "Failed to get config from peers")
writeErrorResponse(w, toAdminAPIErrCode(err), r.URL)
return
}
writeSuccessResponseJSON(w, configBytes)
}
// toAdminAPIErrCode - converts errXLWriteQuorum error to admin API
// specific error.
func toAdminAPIErrCode(err error) APIErrorCode {
switch err {
case errXLWriteQuorum:
return ErrAdminConfigNoQuorum
}
return toAPIErrorCode(err)
}
// SetConfigResult - represents detailed results of a set-config
// operation.
type nodeSummary struct {
Name string `json:"name"`
ErrSet bool `json:"errSet"`
ErrMsg string `json:"errMsg"`
}
type setConfigResult struct {
NodeResults []nodeSummary `json:"nodeResults"`
Status bool `json:"status"`
}
// writeSetConfigResponse - writes setConfigResult value as json depending on the status.
func writeSetConfigResponse(w http.ResponseWriter, peers adminPeers, errs []error, status bool, reqURL *url.URL) {
var nodeResults []nodeSummary
// Build nodeResults based on error values received during
// set-config operation.
for i := range errs {
nodeResults = append(nodeResults, nodeSummary{
Name: peers[i].addr,
ErrSet: errs[i] != nil,
ErrMsg: fmt.Sprintf("%v", errs[i]),
})
}
result := setConfigResult{
Status: status,
NodeResults: nodeResults,
}
// The following elaborate json encoding is to avoid escaping
// '<', '>' in <nil>. Note: json.Encoder.Encode() adds a
// gratuitous "\n".
var resultBuf bytes.Buffer
enc := json.NewEncoder(&resultBuf)
enc.SetEscapeHTML(false)
jsonErr := enc.Encode(result)
if jsonErr != nil {
writeErrorResponse(w, toAPIErrorCode(jsonErr), reqURL)
return
}
writeSuccessResponseJSON(w, resultBuf.Bytes())
return
}
// SetConfigHandler - PUT /?config
// - x-minio-operation = set
func (adminAPI adminAPIHandlers) SetConfigHandler(w http.ResponseWriter, r *http.Request) {
// Get current object layer instance.
objectAPI := newObjectLayerFn()
if objectAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
return
}
// Validate request signature.
adminAPIErr := checkRequestAuthType(r, "", "", "")
if adminAPIErr != ErrNone {
writeErrorResponse(w, adminAPIErr, r.URL)
return
}
// Read configuration bytes from request body.
configBytes, err := ioutil.ReadAll(r.Body)
if err != nil {
errorIf(err, "Failed to read config from request body.")
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
var config serverConfigV19
err = json.Unmarshal(configBytes, &config)
if err != nil {
errorIf(err, "Failed to unmarshal config from request body.")
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
return
}
if globalIsEnvCreds {
creds := serverConfig.GetCredential()
if config.Credential.AccessKey != creds.AccessKey ||
config.Credential.SecretKey != creds.SecretKey {
writeErrorResponse(w, ErrAdminCredentialsMismatch, r.URL)
return
}
}
// Write config received from request onto a temporary file on