86 lines
2.0 KiB
Go
86 lines
2.0 KiB
Go
package test
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import (
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"fmt"
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"os/exec"
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"time"
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"github.com/onsi/gomega"
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"github.com/onsi/gomega/gbytes"
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"github.com/onsi/gomega/gexec"
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)
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// Etcd knows how to run an etcd server. Set it up with the path to a precompiled binary.
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type Etcd struct {
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// The path to the etcd binary
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Path string
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EtcdURL string
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session *gexec.Session
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stdOut *gbytes.Buffer
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stdErr *gbytes.Buffer
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dataDirManager DataDirManager
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}
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// DataDirManager knows how to create and destroy Etcd's data directory.
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type DataDirManager interface {
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Create() (string, error)
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Destroy() error
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}
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// Start starts the etcd, and returns a gexec.Session. To stop it again, call Terminate and Wait on that session.
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func (e *Etcd) Start() error {
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e.dataDirManager = NewTempDirManager()
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e.stdOut = gbytes.NewBuffer()
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e.stdErr = gbytes.NewBuffer()
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dataDir, err := e.dataDirManager.Create()
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if err != nil {
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return err
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}
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args := []string{
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"--debug",
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"--advertise-client-urls",
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e.EtcdURL,
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"--listen-client-urls",
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e.EtcdURL,
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"--data-dir",
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dataDir,
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}
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detectedStart := e.stdErr.Detect("serving insecure client requests on 127.0.0.1:2379")
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timedOut := time.After(20 * time.Second)
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command := exec.Command(e.Path, args...)
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e.session, err = gexec.Start(command, e.stdOut, e.stdErr)
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if err != nil {
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return err
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}
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select {
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case <-detectedStart:
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return nil
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case <-timedOut:
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return fmt.Errorf("timeout waiting for etcd to start serving")
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}
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}
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// Stop stops this process gracefully.
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func (e *Etcd) Stop() {
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if e.session != nil {
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e.session.Terminate().Wait(20 * time.Second)
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err := e.dataDirManager.Destroy()
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gomega.Expect(err).NotTo(gomega.HaveOccurred())
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}
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}
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// ExitCode returns the exit code of the process, if it has exited. If it hasn't exited yet, ExitCode returns -1.
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func (e *Etcd) ExitCode() int {
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return e.session.ExitCode()
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}
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// Buffer implements the gbytes.BufferProvider interface and returns the stdout of the process
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func (e *Etcd) Buffer() *gbytes.Buffer {
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return e.session.Buffer()
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}
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