117 lines
3.6 KiB
Go
117 lines
3.6 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package etcdserver
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import (
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"fmt"
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"log"
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"net/http"
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"path"
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"sort"
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"github.com/coreos/etcd/pkg/netutil"
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"github.com/coreos/etcd/pkg/types"
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"github.com/coreos/etcd/raft"
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)
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// ServerConfig holds the configuration of etcd as taken from the command line or discovery.
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type ServerConfig struct {
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Name string
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DiscoveryURL string
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DiscoveryProxy string
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ClientURLs types.URLs
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PeerURLs types.URLs
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DataDir string
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SnapCount uint64
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MaxSnapFiles uint
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MaxWALFiles uint
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Cluster *Cluster
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NewCluster bool
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ForceNewCluster bool
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Transport *http.Transport
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TickMs uint
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ElectionTicks int
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}
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// VerifyBootstrapConfig sanity-checks the initial config and returns an error
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// for things that should never happen.
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func (c *ServerConfig) VerifyBootstrapConfig() error {
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m := c.Cluster.MemberByName(c.Name)
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// Make sure the cluster at least contains the local server.
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if m == nil {
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return fmt.Errorf("couldn't find local name %q in the initial cluster configuration", c.Name)
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}
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if uint64(m.ID) == raft.None {
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return fmt.Errorf("cannot use %x as member id", raft.None)
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}
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if c.DiscoveryURL == "" && !c.NewCluster {
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return fmt.Errorf("initial cluster state unset and no wal or discovery URL found")
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}
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// No identical IPs in the cluster peer list
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urlMap := make(map[string]bool)
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for _, m := range c.Cluster.Members() {
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for _, url := range m.PeerURLs {
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if urlMap[url] {
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return fmt.Errorf("duplicate url %v in cluster config", url)
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}
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urlMap[url] = true
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}
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}
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// Advertised peer URLs must match those in the cluster peer list
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// TODO: Remove URLStringsEqual after improvement of using hostnames #2150 #2123
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apurls := c.PeerURLs.StringSlice()
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sort.Strings(apurls)
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if !netutil.URLStringsEqual(apurls, m.PeerURLs) {
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return fmt.Errorf("%s has different advertised URLs in the cluster and advertised peer URLs list", c.Name)
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}
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return nil
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}
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func (c *ServerConfig) WALDir() string { return path.Join(c.DataDir, "wal") }
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func (c *ServerConfig) SnapDir() string { return path.Join(c.DataDir, "snap") }
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func (c *ServerConfig) ShouldDiscover() bool { return c.DiscoveryURL != "" }
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func (c *ServerConfig) PrintWithInitial() { c.print(true) }
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func (c *ServerConfig) Print() { c.print(false) }
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func (c *ServerConfig) print(initial bool) {
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log.Printf("etcdserver: name = %s", c.Name)
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if c.ForceNewCluster {
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log.Println("etcdserver: force new cluster")
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}
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log.Printf("etcdserver: data dir = %s", c.DataDir)
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log.Printf("etcdserver: heartbeat = %dms", c.TickMs)
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log.Printf("etcdserver: election = %dms", c.ElectionTicks*int(c.TickMs))
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log.Printf("etcdserver: snapshot count = %d", c.SnapCount)
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if len(c.DiscoveryURL) != 0 {
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log.Printf("etcdserver: discovery URL= %s", c.DiscoveryURL)
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if len(c.DiscoveryProxy) != 0 {
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log.Printf("etcdserver: discovery proxy = %s", c.DiscoveryProxy)
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}
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}
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log.Printf("etcdserver: advertise client URLs = %s", c.ClientURLs)
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if initial {
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log.Printf("etcdserver: initial advertise peer URLs = %s", c.PeerURLs)
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log.Printf("etcdserver: initial cluster = %s", c.Cluster)
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}
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}
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