func createLink(socketPath string) (*linkpkg.Link, io.WriteCloser, io.WriteCloser, error) {
linkStdout := gbytes.NewBuffer()
linkStderr := gbytes.NewBuffer()
var l *linkpkg.Link
var err error
for i := 0; i < 100; i++ {
time.Sleep(10 * time.Millisecond)
l, err = linkpkg.Create(socketPath, linkStdout, linkStderr)
if err == nil {
break
}
}
return l, linkStdout, linkStderr, err
}
// This is guarded by runningLink so will only run once per Process per garden.
func (p *Process) runLinker() {
processSock := path.Join(p.containerPath, "processes", fmt.Sprintf("%d.sock", p.ID()))
link, err := link.Create(processSock, p.stdout, p.stderr)
if err != nil {
p.completed(-1, err)
return
}
p.stdin.AddSink(link)
p.link = link
close(p.linked)
p.completed(p.link.Wait())
// don't leak stdin pipe
p.stdin.Close()
}
AfterEach(func() {
Expect(fakeServer.Stop()).To(Succeed())
Expect(os.RemoveAll(path.Base(unixSockerPath))).To(Succeed())
})
Describe("Create", func() {
Context("when files are not provided", func() {
BeforeEach(func() {
fakeServer.SetConnectionHandler(func(conn net.Conn) {
conn.Close()
})
})
It("returns an error", func() {
_, err := linkpkg.Create(unixSockerPath, stdout, stderr)
Expect(err).To(HaveOccurred())
})
})
Context("when files are provided", func() {
AfterEach(func() {
stdoutW.Close()
stderrW.Close()
statusW.Close()
})
It("succeeds", func() {
_, err := linkpkg.Create(unixSockerPath, stdout, stderr)
Expect(err).ToNot(HaveOccurred())
})
It("can read stdin", func() {
spawnS, err := gexec.Start(exec.Command(
iodaemonBinPath,
"spawn",
socketPath,
"bash", "-c", "cat <&0; exit 42",
), GinkgoWriter, GinkgoWriter)
Expect(err).ToNot(HaveOccurred())
defer spawnS.Kill()
Eventually(spawnS).Should(gbytes.Say("ready\n"))
Consistently(spawnS).ShouldNot(gbytes.Say("active\n"))
linkStdout := gbytes.NewBuffer()
link, err := linkpkg.Create(socketPath, linkStdout, os.Stderr)
Expect(err).ToNot(HaveOccurred())
link.Write([]byte("hello\ngoodbye"))
link.Close()
Eventually(spawnS).Should(gbytes.Say("active\n"))
Eventually(linkStdout).Should(gbytes.Say("hello\ngoodbye"))
Expect(link.Wait()).To(Equal(42))
})
It("can read stdin in tty mode", func() {
spawnS, err := gexec.Start(exec.Command(
iodaemonBinPath,
"-tty",