minio/cmd/globals.go
Aditya Manthramurthy 85a5c358d8 Add bucket metadata state client/handler (Fixes #3022) (#3152)
- Adds an interface to update in-memory bucket metadata state called
  BucketMetaState - this interface has functions to:
     - update bucket notification configuration,
     - bucket listener configuration,
     - bucket policy configuration, and
     - send bucket event

- This interface is implemented by `localBMS` a type for manipulating
  local node in-memory bucket metadata, and by `remoteBMS` a type for
  manipulating remote node in-memory bucket metadata.

- The remote node interface, makes an RPC call, but the local node
  interface does not - it updates in-memory bucket state directly.

- Rename mkPeersFromEndpoints to makeS3Peers and refactored it.

- Use arrayslice instead of map in s3Peers struct

- `s3Peers.SendUpdate` now receives an arrayslice of peer indexes to
  send the request to, with a special nil value slice indicating that
  all peers should be sent the update.

- `s3Peers.SendUpdate` now returns an arrayslice of errors, representing
  errors from peers when sending an update. The array positions
  correspond to peer array s3Peers.peers

Improve globalS3Peers:

- Make isDistXL a global `globalIsDistXL` and remove from s3Peers

- Make globalS3Peers an array of (address, bucket-meta-state) pairs.

- Fix code and tests.
2016-11-07 12:09:24 -08:00

90 lines
2.6 KiB
Go

/*
* 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 (
"time"
"github.com/fatih/color"
"github.com/minio/minio/pkg/objcache"
)
// Global constants for Minio.
const (
minGoVersion = ">= 1.7" // Minio requires at least Go v1.7
)
// minio configuration related constants.
const (
globalMinioConfigVersion = "9"
globalMinioConfigDir = ".minio"
globalMinioCertsDir = "certs"
globalMinioCertFile = "public.crt"
globalMinioKeyFile = "private.key"
globalMinioConfigFile = "config.json"
globalMinioCertExpireWarnDays = time.Hour * 24 * 30 // 30 days.
// Add new global values here.
)
var (
globalQuiet = false // Quiet flag set via command line
globalIsDistXL = false // "Is Distributed?" flag.
// Add new global flags here.
// Maximum connections handled per
// server, defaults to 0 (unlimited).
globalMaxConn = 0
// Maximum cache size.
globalMaxCacheSize = uint64(maxCacheSize)
// Cache expiry.
globalCacheExpiry = objcache.DefaultExpiry
// Minio local server address (in `host:port` format)
globalMinioAddr = ""
// Minio default port, can be changed through command line.
globalMinioPort = "9000"
// Holds the host that was passed using --address
globalMinioHost = ""
// Peer communication struct
globalS3Peers = s3Peers{}
// Add new variable global values here.
)
var (
// Limit fields size (except file) to 1Mib since Policy document
// can reach that size according to https://aws.amazon.com/articles/1434
maxFormFieldSize = int64(1024 * 1024)
)
var (
// The maximum allowed difference between the request generation time and the server processing time
globalMaxSkewTime = 15 * time.Minute
// Keeps the connection active by waiting for following amount of time.
// Primarily used in ListenBucketNotification.
globalSNSConnAlive = 5 * time.Second
)
// global colors.
var (
colorRed = color.New(color.FgRed).SprintFunc()
colorBold = color.New(color.Bold).SprintFunc()
colorBlue = color.New(color.FgBlue).SprintfFunc()
colorGreen = color.New(color.FgGreen).SprintfFunc()
)