139 lines
4.1 KiB
Go
139 lines
4.1 KiB
Go
package agent
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import (
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"fmt"
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"io"
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"net"
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"net/http"
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"time"
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autoconf "github.com/hashicorp/consul/agent/auto-config"
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"github.com/hashicorp/consul/agent/cache"
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"github.com/hashicorp/consul/agent/config"
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"github.com/hashicorp/consul/agent/consul"
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"github.com/hashicorp/consul/agent/grpc"
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"github.com/hashicorp/consul/agent/grpc/resolver"
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"github.com/hashicorp/consul/agent/pool"
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"github.com/hashicorp/consul/agent/router"
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"github.com/hashicorp/consul/agent/token"
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"github.com/hashicorp/consul/ipaddr"
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"github.com/hashicorp/consul/lib"
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"github.com/hashicorp/consul/logging"
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"github.com/hashicorp/consul/tlsutil"
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"github.com/hashicorp/go-hclog"
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"google.golang.org/grpc/grpclog"
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)
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// TODO: BaseDeps should be renamed in the future once more of Agent.Start
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// has been moved out in front of Agent.New, and we can better see the setup
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// dependencies.
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type BaseDeps struct {
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consul.Deps // TODO: un-embed
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RuntimeConfig *config.RuntimeConfig
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MetricsHandler MetricsHandler
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AutoConfig *autoconf.AutoConfig // TODO: use an interface
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Cache *cache.Cache
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}
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// MetricsHandler provides an http.Handler for displaying metrics.
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type MetricsHandler interface {
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DisplayMetrics(resp http.ResponseWriter, req *http.Request) (interface{}, error)
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}
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type ConfigLoader func(source config.Source) (cfg *config.RuntimeConfig, warnings []string, err error)
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func NewBaseDeps(configLoader ConfigLoader, logOut io.Writer) (BaseDeps, error) {
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d := BaseDeps{}
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cfg, warnings, err := configLoader(nil)
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if err != nil {
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return d, err
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}
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logConf := cfg.Logging
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logConf.Name = logging.Agent
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d.Logger, err = logging.Setup(logConf, logOut)
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if err != nil {
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return d, err
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}
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grpclog.SetLoggerV2(logging.NewGRPCLogger(cfg.Logging.LogLevel, d.Logger))
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for _, w := range warnings {
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d.Logger.Warn(w)
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}
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cfg.NodeID, err = newNodeIDFromConfig(cfg, d.Logger)
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if err != nil {
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return d, fmt.Errorf("failed to setup node ID: %w", err)
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}
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d.MetricsHandler, err = lib.InitTelemetry(cfg.Telemetry)
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if err != nil {
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return d, fmt.Errorf("failed to initialize telemetry: %w", err)
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}
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d.TLSConfigurator, err = tlsutil.NewConfigurator(cfg.ToTLSUtilConfig(), d.Logger)
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if err != nil {
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return d, err
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}
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d.RuntimeConfig = cfg
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d.Tokens = new(token.Store)
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// cache-types are not registered yet, but they won't be used until the components are started.
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d.Cache = cache.New(cfg.Cache)
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d.ConnPool = newConnPool(cfg, d.Logger, d.TLSConfigurator)
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// TODO(streaming): setConfig.Scheme name for tests
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builder := resolver.NewServerResolverBuilder(resolver.Config{})
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resolver.RegisterWithGRPC(builder)
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d.GRPCConnPool = grpc.NewClientConnPool(builder, grpc.TLSWrapper(d.TLSConfigurator.OutgoingRPCWrapper()))
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d.Router = router.NewRouter(d.Logger, cfg.Datacenter, fmt.Sprintf("%s.%s", cfg.NodeName, cfg.Datacenter), builder)
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acConf := autoconf.Config{
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DirectRPC: d.ConnPool,
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Logger: d.Logger,
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Loader: configLoader,
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ServerProvider: d.Router,
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TLSConfigurator: d.TLSConfigurator,
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Cache: d.Cache,
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Tokens: d.Tokens,
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}
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d.AutoConfig, err = autoconf.New(acConf)
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if err != nil {
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return d, err
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}
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return d, nil
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}
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func newConnPool(config *config.RuntimeConfig, logger hclog.Logger, tls *tlsutil.Configurator) *pool.ConnPool {
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var rpcSrcAddr *net.TCPAddr
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if !ipaddr.IsAny(config.RPCBindAddr) {
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rpcSrcAddr = &net.TCPAddr{IP: config.RPCBindAddr.IP}
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}
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pool := &pool.ConnPool{
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Server: config.ServerMode,
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SrcAddr: rpcSrcAddr,
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Logger: logger.StandardLogger(&hclog.StandardLoggerOptions{InferLevels: true}),
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TLSConfigurator: tls,
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Datacenter: config.Datacenter,
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}
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if config.ServerMode {
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pool.MaxTime = 2 * time.Minute
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pool.MaxStreams = 64
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} else {
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// MaxTime controls how long we keep an idle connection open to a server.
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// 127s was chosen as the first prime above 120s
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// (arbitrarily chose to use a prime) with the intent of reusing
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// connections who are used by once-a-minute cron(8) jobs *and* who
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// use a 60s jitter window (e.g. in vixie cron job execution can
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// drift by up to 59s per job, or 119s for a once-a-minute cron job).
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pool.MaxTime = 127 * time.Second
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pool.MaxStreams = 32
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}
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return pool
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}
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