featurebase/cmd/server.go
Ben Johnson c7c9c1e1d7
v2.0.0
Co-authored-by: Cody Soyland <codysoyland@gmail.com>
2019-10-08 14:56:17 -06:00

102 lines
3.1 KiB
Go

// Copyright 2017 Pilosa Corp.
//
// 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 (
"io"
"github.com/pilosa/pilosa/v2/ctl"
"github.com/pilosa/pilosa/v2/server"
"github.com/pilosa/pilosa/v2/tracing"
"github.com/pilosa/pilosa/v2/tracing/opentracing"
"github.com/pkg/errors"
"github.com/spf13/cobra"
jaegercfg "github.com/uber/jaeger-client-go/config"
)
// Server is global so that tests can control and verify it.
var Server *server.Command
var holder *server.Command
// newHolderCmd creates a pilosa server for just long enough to open the
// holder, then shuts it down again.
func newHolderCmd(stdin io.Reader, stdout, stderr io.Writer) *cobra.Command {
holder = server.NewCommand(stdin, stdout, stderr)
serveCmd := &cobra.Command{
Use: "holder",
Short: "Load Pilosa.",
Long: `pilosa holder starts (and immediately stops) Pilosa.
It opens the data directory and loads it, then shuts down immediately.
This is only useful for diagnostic use.
`,
RunE: func(cmd *cobra.Command, args []string) error {
// Start & run the server.
if err := holder.UpAndDown(); err != nil {
return errors.Wrap(err, "running server")
}
return nil
},
}
// Attach flags to the command.
ctl.BuildServerFlags(serveCmd, holder)
return serveCmd
}
// newServeCmd creates a pilosa server and runs it with command line flags.
func newServeCmd(stdin io.Reader, stdout, stderr io.Writer) *cobra.Command {
Server = server.NewCommand(stdin, stdout, stderr)
serveCmd := &cobra.Command{
Use: "server",
Short: "Run Pilosa.",
Long: `pilosa server runs Pilosa.
It will load existing data from the configured
directory and start listening for client connections
on the configured port.`,
RunE: func(cmd *cobra.Command, args []string) error {
// Start & run the server.
if err := Server.Start(); err != nil {
return errors.Wrap(err, "running server")
}
if Server.Config.Tracing.SamplerType != "off" {
// Initialize tracing in the command since it is global.
var cfg jaegercfg.Configuration
cfg.ServiceName = "pilosa"
cfg.Sampler = &jaegercfg.SamplerConfig{
Type: Server.Config.Tracing.SamplerType,
Param: Server.Config.Tracing.SamplerParam,
}
cfg.Reporter = &jaegercfg.ReporterConfig{
LocalAgentHostPort: Server.Config.Tracing.AgentHostPort,
}
tracer, closer, err := cfg.NewTracer()
if err != nil {
return errors.Wrap(err, "initializing jaeger tracer")
}
defer closer.Close()
tracing.GlobalTracer = opentracing.NewTracer(tracer)
}
return errors.Wrap(Server.Wait(), "waiting on Server")
},
}
// Attach flags to the command.
ctl.BuildServerFlags(serveCmd, Server)
return serveCmd
}