mirror of https://github.com/status-im/consul.git
818 lines
21 KiB
Go
818 lines
21 KiB
Go
package agent
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import (
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"encoding/base64"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net"
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"os"
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"path/filepath"
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"strconv"
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"sync"
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"github.com/hashicorp/consul/consul"
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"github.com/hashicorp/consul/consul/structs"
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"github.com/hashicorp/memberlist"
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"github.com/hashicorp/serf/serf"
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)
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/*
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The agent is the long running process that is run on every machine.
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It exposes an RPC interface that is used by the CLI to control the
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agent. The agent runs the query interfaces like HTTP, DNS, and RPC.
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However, it can run in either a client, or server mode. In server
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mode, it runs a full Consul server. In client-only mode, it only forwards
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requests to other Consul servers.
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*/
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type Agent struct {
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config *Config
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// Used for writing our logs
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logger *log.Logger
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// Output sink for logs
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logOutput io.Writer
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// We have one of a client or a server, depending
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// on our configuration
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server *consul.Server
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client *consul.Client
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// state stores a local representation of the node,
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// services and checks. Used for anti-entropy.
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state localState
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// checkMonitors maps the check ID to an associated monitor
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// checkTTLs maps the check ID to an associated check TTL
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// checkLock protects updates to either
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checkMonitors map[string]*CheckMonitor
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checkTTLs map[string]*CheckTTL
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checkLock sync.Mutex
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// eventCh is used to receive user events
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eventCh chan serf.UserEvent
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// eventBuf stores the most recent events in a ring buffer
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// using eventIndex as the next index to insert into. This
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// is guarded by eventLock. When an insert happens, the
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// eventNotify group is notified.
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eventBuf []*UserEvent
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eventIndex int
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eventLock sync.RWMutex
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eventNotify consul.NotifyGroup
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shutdown bool
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shutdownCh chan struct{}
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shutdownLock sync.Mutex
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}
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// Create is used to create a new Agent. Returns
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// the agent or potentially an error.
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func Create(config *Config, logOutput io.Writer) (*Agent, error) {
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// Ensure we have a log sink
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if logOutput == nil {
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logOutput = os.Stderr
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}
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// Validate the config
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if config.Datacenter == "" {
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return nil, fmt.Errorf("Must configure a Datacenter")
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}
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if config.DataDir == "" {
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return nil, fmt.Errorf("Must configure a DataDir")
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}
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// Try to get an advertise address
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if config.AdvertiseAddr != "" {
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if ip := net.ParseIP(config.AdvertiseAddr); ip == nil {
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return nil, fmt.Errorf("Failed to parse advertise address: %v", config.AdvertiseAddr)
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}
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} else if config.BindAddr != "0.0.0.0" && config.BindAddr != "" {
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config.AdvertiseAddr = config.BindAddr
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} else {
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ip, err := consul.GetPrivateIP()
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if err != nil {
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return nil, fmt.Errorf("Failed to get advertise address: %v", err)
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}
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config.AdvertiseAddr = ip.String()
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}
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agent := &Agent{
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config: config,
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logger: log.New(logOutput, "", log.LstdFlags),
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logOutput: logOutput,
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checkMonitors: make(map[string]*CheckMonitor),
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checkTTLs: make(map[string]*CheckTTL),
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eventCh: make(chan serf.UserEvent, 1024),
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eventBuf: make([]*UserEvent, 256),
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shutdownCh: make(chan struct{}),
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}
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// Initialize the local state
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agent.state.Init(config, agent.logger)
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// Setup encryption keyring files
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if !config.DisableKeyring && config.EncryptKey != "" {
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serfDir := filepath.Join(config.DataDir, "serf")
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if err := os.MkdirAll(serfDir, 0700); err != nil {
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return nil, err
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}
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keys := []string{config.EncryptKey}
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keyringBytes, err := json.MarshalIndent(keys, "", " ")
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if err != nil {
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return nil, err
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}
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paths := []string{
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filepath.Join(serfDir, "keyring_lan"),
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filepath.Join(serfDir, "keyring_wan"),
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}
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for _, path := range paths {
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if _, err := os.Stat(path); err == nil {
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continue
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}
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fh, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0600)
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if err != nil {
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return nil, err
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}
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defer fh.Close()
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if _, err := fh.Write(keyringBytes); err != nil {
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os.Remove(path)
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return nil, err
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}
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}
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}
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// Setup either the client or the server
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var err error
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if config.Server {
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err = agent.setupServer()
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agent.state.SetIface(agent.server)
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// Automatically register the "consul" service on server nodes
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consulService := structs.NodeService{
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Service: consul.ConsulServiceName,
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ID: consul.ConsulServiceID,
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Port: agent.config.Ports.Server,
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Tags: []string{},
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}
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agent.state.AddService(&consulService)
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} else {
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err = agent.setupClient()
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agent.state.SetIface(agent.client)
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}
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if err != nil {
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return nil, err
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}
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// Start handling events
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go agent.handleEvents()
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// Write out the PID file if necessary
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err = agent.storePid()
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if err != nil {
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return nil, err
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}
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return agent, nil
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}
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// consulConfig is used to return a consul configuration
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func (a *Agent) consulConfig() *consul.Config {
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// Start with the provided config or default config
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var base *consul.Config
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if a.config.ConsulConfig != nil {
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base = a.config.ConsulConfig
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} else {
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base = consul.DefaultConfig()
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}
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// Override with our config
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if a.config.Datacenter != "" {
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base.Datacenter = a.config.Datacenter
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}
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if a.config.DataDir != "" {
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base.DataDir = a.config.DataDir
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}
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if a.config.EncryptKey != "" && a.config.DisableKeyring {
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key, _ := a.config.EncryptBytes()
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base.SerfLANConfig.MemberlistConfig.SecretKey = key
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base.SerfWANConfig.MemberlistConfig.SecretKey = key
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}
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if !a.config.DisableKeyring {
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lanKeyring := filepath.Join(base.DataDir, "serf", "keyring_lan")
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wanKeyring := filepath.Join(base.DataDir, "serf", "keyring_wan")
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base.SerfLANConfig.KeyringFile = lanKeyring
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base.SerfWANConfig.KeyringFile = wanKeyring
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base.SerfLANConfig.MemberlistConfig.Keyring = loadKeyringFile(lanKeyring)
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base.SerfWANConfig.MemberlistConfig.Keyring = loadKeyringFile(wanKeyring)
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}
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if a.config.NodeName != "" {
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base.NodeName = a.config.NodeName
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}
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if a.config.BindAddr != "" {
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base.SerfLANConfig.MemberlistConfig.BindAddr = a.config.BindAddr
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base.SerfWANConfig.MemberlistConfig.BindAddr = a.config.BindAddr
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}
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if a.config.Ports.SerfLan != 0 {
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base.SerfLANConfig.MemberlistConfig.BindPort = a.config.Ports.SerfLan
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base.SerfLANConfig.MemberlistConfig.AdvertisePort = a.config.Ports.SerfLan
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}
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if a.config.Ports.SerfWan != 0 {
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base.SerfWANConfig.MemberlistConfig.BindPort = a.config.Ports.SerfWan
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base.SerfWANConfig.MemberlistConfig.AdvertisePort = a.config.Ports.SerfWan
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}
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if a.config.BindAddr != "" {
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bindAddr := &net.TCPAddr{
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IP: net.ParseIP(a.config.BindAddr),
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Port: a.config.Ports.Server,
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}
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base.RPCAddr = bindAddr
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}
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if a.config.AdvertiseAddr != "" {
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base.SerfLANConfig.MemberlistConfig.AdvertiseAddr = a.config.AdvertiseAddr
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base.SerfWANConfig.MemberlistConfig.AdvertiseAddr = a.config.AdvertiseAddr
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base.RPCAdvertise = &net.TCPAddr{
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IP: net.ParseIP(a.config.AdvertiseAddr),
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Port: a.config.Ports.Server,
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}
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}
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if a.config.Bootstrap {
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base.Bootstrap = true
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}
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if a.config.RejoinAfterLeave {
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base.RejoinAfterLeave = true
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}
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if a.config.BootstrapExpect != 0 {
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base.BootstrapExpect = a.config.BootstrapExpect
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}
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if a.config.Protocol > 0 {
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base.ProtocolVersion = uint8(a.config.Protocol)
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}
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if a.config.ACLToken != "" {
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base.ACLToken = a.config.ACLToken
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}
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if a.config.ACLMasterToken != "" {
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base.ACLMasterToken = a.config.ACLMasterToken
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}
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if a.config.ACLDatacenter != "" {
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base.ACLDatacenter = a.config.ACLDatacenter
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}
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if a.config.ACLTTLRaw != "" {
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base.ACLTTL = a.config.ACLTTL
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}
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if a.config.ACLDefaultPolicy != "" {
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base.ACLDefaultPolicy = a.config.ACLDefaultPolicy
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}
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if a.config.ACLDownPolicy != "" {
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base.ACLDownPolicy = a.config.ACLDownPolicy
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}
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// Format the build string
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revision := a.config.Revision
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if len(revision) > 8 {
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revision = revision[:8]
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}
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base.Build = fmt.Sprintf("%s%s:%s",
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a.config.Version, a.config.VersionPrerelease, revision)
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// Copy the TLS configuration
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base.VerifyIncoming = a.config.VerifyIncoming
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base.VerifyOutgoing = a.config.VerifyOutgoing
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base.CAFile = a.config.CAFile
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base.CertFile = a.config.CertFile
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base.KeyFile = a.config.KeyFile
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base.ServerName = a.config.ServerName
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// Setup the ServerUp callback
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base.ServerUp = a.state.ConsulServerUp
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// Setup the user event callback
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base.UserEventHandler = func(e serf.UserEvent) {
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select {
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case a.eventCh <- e:
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case <-a.shutdownCh:
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}
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}
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// Setup gossip keyring configuration
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base.DisableKeyring = a.config.DisableKeyring
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// Setup the loggers
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base.LogOutput = a.logOutput
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return base
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}
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// setupServer is used to initialize the Consul server
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func (a *Agent) setupServer() error {
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server, err := consul.NewServer(a.consulConfig())
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if err != nil {
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return fmt.Errorf("Failed to start Consul server: %v", err)
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}
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a.server = server
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return nil
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}
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// setupClient is used to initialize the Consul client
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func (a *Agent) setupClient() error {
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client, err := consul.NewClient(a.consulConfig())
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if err != nil {
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return fmt.Errorf("Failed to start Consul client: %v", err)
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}
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a.client = client
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return nil
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}
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// RPC is used to make an RPC call to the Consul servers
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// This allows the agent to implement the Consul.Interface
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func (a *Agent) RPC(method string, args interface{}, reply interface{}) error {
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if a.server != nil {
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return a.server.RPC(method, args, reply)
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}
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return a.client.RPC(method, args, reply)
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}
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// Leave is used to prepare the agent for a graceful shutdown
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func (a *Agent) Leave() error {
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if a.server != nil {
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return a.server.Leave()
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} else {
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return a.client.Leave()
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}
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}
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// Shutdown is used to hard stop the agent. Should be
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// preceeded by a call to Leave to do it gracefully.
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func (a *Agent) Shutdown() error {
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a.shutdownLock.Lock()
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defer a.shutdownLock.Unlock()
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if a.shutdown {
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return nil
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}
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// Stop all the checks
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a.checkLock.Lock()
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defer a.checkLock.Unlock()
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for _, chk := range a.checkMonitors {
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chk.Stop()
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}
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for _, chk := range a.checkTTLs {
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chk.Stop()
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}
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a.logger.Println("[INFO] agent: requesting shutdown")
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var err error
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if a.server != nil {
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err = a.server.Shutdown()
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} else {
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err = a.client.Shutdown()
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}
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pidErr := a.deletePid()
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if pidErr != nil {
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a.logger.Println("[WARN] agent: could not delete pid file ", pidErr)
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}
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a.logger.Println("[INFO] agent: shutdown complete")
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a.shutdown = true
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close(a.shutdownCh)
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return err
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}
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// ShutdownCh is used to return a channel that can be
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// selected to wait for the agent to perform a shutdown.
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func (a *Agent) ShutdownCh() <-chan struct{} {
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return a.shutdownCh
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}
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// JoinLAN is used to have the agent join a LAN cluster
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func (a *Agent) JoinLAN(addrs []string) (n int, err error) {
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a.logger.Printf("[INFO] agent: (LAN) joining: %v", addrs)
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if a.server != nil {
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n, err = a.server.JoinLAN(addrs)
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} else {
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n, err = a.client.JoinLAN(addrs)
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}
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a.logger.Printf("[INFO] agent: (LAN) joined: %d Err: %v", n, err)
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return
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}
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// JoinWAN is used to have the agent join a WAN cluster
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func (a *Agent) JoinWAN(addrs []string) (n int, err error) {
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a.logger.Printf("[INFO] agent: (WAN) joining: %v", addrs)
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if a.server != nil {
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n, err = a.server.JoinWAN(addrs)
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} else {
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err = fmt.Errorf("Must be a server to join WAN cluster")
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}
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a.logger.Printf("[INFO] agent: (WAN) joined: %d Err: %v", n, err)
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return
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}
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// ForceLeave is used to remove a failed node from the cluster
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func (a *Agent) ForceLeave(node string) (err error) {
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a.logger.Printf("[INFO] Force leaving node: %v", node)
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if a.server != nil {
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err = a.server.RemoveFailedNode(node)
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} else {
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err = a.client.RemoveFailedNode(node)
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}
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if err != nil {
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a.logger.Printf("[WARN] Failed to remove node: %v", err)
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}
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return err
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}
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// LocalMember is used to return the local node
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func (a *Agent) LocalMember() serf.Member {
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if a.server != nil {
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return a.server.LocalMember()
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} else {
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return a.client.LocalMember()
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}
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}
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// LANMembers is used to retrieve the LAN members
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func (a *Agent) LANMembers() []serf.Member {
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if a.server != nil {
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return a.server.LANMembers()
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} else {
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return a.client.LANMembers()
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}
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}
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// WANMembers is used to retrieve the WAN members
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func (a *Agent) WANMembers() []serf.Member {
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if a.server != nil {
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return a.server.WANMembers()
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} else {
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return nil
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}
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}
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// StartSync is called once Services and Checks are registered.
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// This is called to prevent a race between clients and the anti-entropy routines
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func (a *Agent) StartSync() {
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// Start the anti entropy routine
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go a.state.antiEntropy(a.shutdownCh)
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}
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// PauseSync is used to pause anti-entropy while bulk changes are make
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func (a *Agent) PauseSync() {
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a.state.Pause()
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}
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// ResumeSync is used to unpause anti-entropy after bulk changes are make
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func (a *Agent) ResumeSync() {
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a.state.Resume()
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}
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// AddService is used to add a service entry.
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// This entry is persistent and the agent will make a best effort to
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// ensure it is registered
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func (a *Agent) AddService(service *structs.NodeService, chkType *CheckType) error {
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if service.Service == "" {
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return fmt.Errorf("Service name missing")
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}
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if service.ID == "" && service.Service != "" {
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service.ID = service.Service
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}
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if chkType != nil && !chkType.Valid() {
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return fmt.Errorf("Check type is not valid")
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}
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// Add the service
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a.state.AddService(service)
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// Create an associated health check
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if chkType != nil {
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check := &structs.HealthCheck{
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Node: a.config.NodeName,
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CheckID: fmt.Sprintf("service:%s", service.ID),
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Name: fmt.Sprintf("Service '%s' check", service.Service),
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Status: structs.HealthCritical,
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Notes: chkType.Notes,
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ServiceID: service.ID,
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ServiceName: service.Service,
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}
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if err := a.AddCheck(check, chkType); err != nil {
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return err
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}
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}
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return nil
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}
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// RemoveService is used to remove a service entry.
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// The agent will make a best effort to ensure it is deregistered
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func (a *Agent) RemoveService(serviceID string) error {
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// Protect "consul" service from deletion by a user
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if a.server != nil && serviceID == consul.ConsulServiceID {
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return fmt.Errorf(
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"Deregistering the %s service is not allowed",
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consul.ConsulServiceID)
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}
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// Remove service immeidately
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a.state.RemoveService(serviceID)
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// Deregister any associated health checks
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checkID := fmt.Sprintf("service:%s", serviceID)
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|
return a.RemoveCheck(checkID)
|
|
}
|
|
|
|
// AddCheck is used to add a health check to the agent.
|
|
// This entry is persistent and the agent will make a best effort to
|
|
// ensure it is registered. The Check may include a CheckType which
|
|
// is used to automatically update the check status
|
|
func (a *Agent) AddCheck(check *structs.HealthCheck, chkType *CheckType) error {
|
|
if check.CheckID == "" {
|
|
return fmt.Errorf("CheckID missing")
|
|
}
|
|
if chkType != nil && !chkType.Valid() {
|
|
return fmt.Errorf("Check type is not valid")
|
|
}
|
|
|
|
a.checkLock.Lock()
|
|
defer a.checkLock.Unlock()
|
|
|
|
// Check if already registered
|
|
if chkType != nil {
|
|
if chkType.IsTTL() {
|
|
if existing, ok := a.checkTTLs[check.CheckID]; ok {
|
|
existing.Stop()
|
|
}
|
|
|
|
ttl := &CheckTTL{
|
|
Notify: &a.state,
|
|
CheckID: check.CheckID,
|
|
TTL: chkType.TTL,
|
|
Logger: a.logger,
|
|
}
|
|
ttl.Start()
|
|
a.checkTTLs[check.CheckID] = ttl
|
|
|
|
} else {
|
|
if existing, ok := a.checkMonitors[check.CheckID]; ok {
|
|
existing.Stop()
|
|
}
|
|
if chkType.Interval < MinInterval {
|
|
a.logger.Println(fmt.Sprintf("[WARN] agent: check '%s' has interval below minimum of %v",
|
|
check.CheckID, MinInterval))
|
|
chkType.Interval = MinInterval
|
|
}
|
|
|
|
monitor := &CheckMonitor{
|
|
Notify: &a.state,
|
|
CheckID: check.CheckID,
|
|
Script: chkType.Script,
|
|
Interval: chkType.Interval,
|
|
Logger: a.logger,
|
|
}
|
|
monitor.Start()
|
|
a.checkMonitors[check.CheckID] = monitor
|
|
}
|
|
}
|
|
|
|
// Add to the local state for anti-entropy
|
|
a.state.AddCheck(check)
|
|
return nil
|
|
}
|
|
|
|
// RemoveCheck is used to remove a health check.
|
|
// The agent will make a best effort to ensure it is deregistered
|
|
func (a *Agent) RemoveCheck(checkID string) error {
|
|
// Add to the local state for anti-entropy
|
|
a.state.RemoveCheck(checkID)
|
|
|
|
a.checkLock.Lock()
|
|
defer a.checkLock.Unlock()
|
|
|
|
// Stop any monitors
|
|
if check, ok := a.checkMonitors[checkID]; ok {
|
|
check.Stop()
|
|
delete(a.checkMonitors, checkID)
|
|
}
|
|
if check, ok := a.checkTTLs[checkID]; ok {
|
|
check.Stop()
|
|
delete(a.checkTTLs, checkID)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// UpdateCheck is used to update the status of a check.
|
|
// This can only be used with checks of the TTL type.
|
|
func (a *Agent) UpdateCheck(checkID, status, output string) error {
|
|
a.checkLock.Lock()
|
|
defer a.checkLock.Unlock()
|
|
|
|
check, ok := a.checkTTLs[checkID]
|
|
if !ok {
|
|
return fmt.Errorf("CheckID does not have associated TTL")
|
|
}
|
|
|
|
// Set the status through CheckTTL to reset the TTL
|
|
check.SetStatus(status, output)
|
|
return nil
|
|
}
|
|
|
|
// Stats is used to get various debugging state from the sub-systems
|
|
func (a *Agent) Stats() map[string]map[string]string {
|
|
toString := func(v uint64) string {
|
|
return strconv.FormatUint(v, 10)
|
|
}
|
|
var stats map[string]map[string]string
|
|
if a.server != nil {
|
|
stats = a.server.Stats()
|
|
} else {
|
|
stats = a.client.Stats()
|
|
}
|
|
stats["agent"] = map[string]string{
|
|
"check_monitors": toString(uint64(len(a.checkMonitors))),
|
|
"check_ttls": toString(uint64(len(a.checkTTLs))),
|
|
"checks": toString(uint64(len(a.state.checks))),
|
|
"services": toString(uint64(len(a.state.services))),
|
|
}
|
|
|
|
revision := a.config.Revision
|
|
if len(revision) > 8 {
|
|
revision = revision[:8]
|
|
}
|
|
stats["build"] = map[string]string{
|
|
"revision": revision,
|
|
"version": a.config.Version,
|
|
"prerelease": a.config.VersionPrerelease,
|
|
}
|
|
return stats
|
|
}
|
|
|
|
// storePid is used to write out our PID to a file if necessary
|
|
func (a *Agent) storePid() error {
|
|
// Quit fast if no pidfile
|
|
pidPath := a.config.PidFile
|
|
if pidPath == "" {
|
|
return nil
|
|
}
|
|
|
|
// Open the PID file
|
|
pidFile, err := os.OpenFile(pidPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
|
|
if err != nil {
|
|
return fmt.Errorf("Could not open pid file: %v", err)
|
|
}
|
|
defer pidFile.Close()
|
|
|
|
// Write out the PID
|
|
pid := os.Getpid()
|
|
_, err = pidFile.WriteString(fmt.Sprintf("%d", pid))
|
|
if err != nil {
|
|
return fmt.Errorf("Could not write to pid file: %s", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// deletePid is used to delete our PID on exit
|
|
func (a *Agent) deletePid() error {
|
|
// Quit fast if no pidfile
|
|
pidPath := a.config.PidFile
|
|
if pidPath == "" {
|
|
return nil
|
|
}
|
|
|
|
stat, err := os.Stat(pidPath)
|
|
if err != nil {
|
|
return fmt.Errorf("Could not remove pid file: %s", err)
|
|
}
|
|
|
|
if stat.IsDir() {
|
|
return fmt.Errorf("Specified pid file path is directory")
|
|
}
|
|
|
|
err = os.Remove(pidPath)
|
|
if err != nil {
|
|
return fmt.Errorf("Could not remove pid file: %s", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// loadKeyringFile will load a keyring out of a file
|
|
func loadKeyringFile(keyringFile string) *memberlist.Keyring {
|
|
if _, err := os.Stat(keyringFile); err != nil {
|
|
return nil
|
|
}
|
|
|
|
// Read in the keyring file data
|
|
keyringData, err := ioutil.ReadFile(keyringFile)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
|
|
// Decode keyring JSON
|
|
keys := make([]string, 0)
|
|
if err := json.Unmarshal(keyringData, &keys); err != nil {
|
|
return nil
|
|
}
|
|
|
|
// Decode base64 values
|
|
keysDecoded := make([][]byte, len(keys))
|
|
for i, key := range keys {
|
|
keyBytes, err := base64.StdEncoding.DecodeString(key)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
keysDecoded[i] = keyBytes
|
|
}
|
|
|
|
// Create the keyring
|
|
keyring, err := memberlist.NewKeyring(keysDecoded, keysDecoded[0])
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
|
|
// Success!
|
|
return keyring
|
|
}
|
|
|
|
// ListKeysLAN returns the keys installed on the LAN gossip pool
|
|
func (a *Agent) ListKeysLAN() (*serf.KeyResponse, error) {
|
|
if a.server != nil {
|
|
km := a.server.KeyManagerLAN()
|
|
return km.ListKeys()
|
|
}
|
|
km := a.client.KeyManagerLAN()
|
|
return km.ListKeys()
|
|
}
|
|
|
|
// ListKeysWAN returns the keys installed on the WAN gossip pool
|
|
func (a *Agent) ListKeysWAN() (*serf.KeyResponse, error) {
|
|
if a.server != nil {
|
|
km := a.server.KeyManagerWAN()
|
|
return km.ListKeys()
|
|
}
|
|
return nil, fmt.Errorf("WAN keyring not available on client node")
|
|
}
|
|
|
|
// InstallKeyWAN installs a new WAN gossip encryption key on server nodes
|
|
func (a *Agent) InstallKeyWAN(key string) (*serf.KeyResponse, error) {
|
|
if a.server != nil {
|
|
km := a.server.KeyManagerWAN()
|
|
return km.InstallKey(key)
|
|
}
|
|
return nil, fmt.Errorf("WAN keyring not available on client node")
|
|
}
|
|
|
|
// InstallKeyLAN installs a new LAN gossip encryption key on all nodes
|
|
func (a *Agent) InstallKeyLAN(key string) (*serf.KeyResponse, error) {
|
|
if a.server != nil {
|
|
km := a.server.KeyManagerLAN()
|
|
return km.InstallKey(key)
|
|
}
|
|
km := a.client.KeyManagerLAN()
|
|
return km.InstallKey(key)
|
|
}
|
|
|
|
// UseKeyWAN changes the primary WAN gossip encryption key on server nodes
|
|
func (a *Agent) UseKeyWAN(key string) (*serf.KeyResponse, error) {
|
|
if a.server != nil {
|
|
km := a.server.KeyManagerWAN()
|
|
return km.UseKey(key)
|
|
}
|
|
return nil, fmt.Errorf("WAN keyring not available on client node")
|
|
}
|
|
|
|
// UseKeyLAN changes the primary LAN gossip encryption key on all nodes
|
|
func (a *Agent) UseKeyLAN(key string) (*serf.KeyResponse, error) {
|
|
if a.server != nil {
|
|
km := a.server.KeyManagerLAN()
|
|
return km.UseKey(key)
|
|
}
|
|
km := a.client.KeyManagerLAN()
|
|
return km.UseKey(key)
|
|
}
|
|
|
|
// RemoveKeyWAN removes a WAN gossip encryption key on server nodes
|
|
func (a *Agent) RemoveKeyWAN(key string) (*serf.KeyResponse, error) {
|
|
if a.server != nil {
|
|
km := a.server.KeyManagerWAN()
|
|
return km.RemoveKey(key)
|
|
}
|
|
return nil, fmt.Errorf("WAN keyring not available on client node")
|
|
}
|
|
|
|
// RemoveKeyLAN removes a LAN gossip encryption key on all nodes
|
|
func (a *Agent) RemoveKeyLAN(key string) (*serf.KeyResponse, error) {
|
|
if a.server != nil {
|
|
km := a.server.KeyManagerLAN()
|
|
return km.RemoveKey(key)
|
|
}
|
|
km := a.client.KeyManagerLAN()
|
|
return km.RemoveKey(key)
|
|
}
|