package main import ( "encoding/json" "strconv" "strings" "testing" "time" "github.com/docker/docker/api/types" "github.com/docker/docker/integration-cli/cli/build" "gotest.tools/v3/assert" ) func waitForHealthStatus(c *testing.T, name string, prev string, expected string) { prev = prev + "\n" expected = expected + "\n" for { out, _ := dockerCmd(c, "inspect", "--format={{.State.Health.Status}}", name) if out == expected { return } assert.Equal(c, out, prev) if out != prev { return } time.Sleep(100 * time.Millisecond) } } func getHealth(c *testing.T, name string) *types.Health { out, _ := dockerCmd(c, "inspect", "--format={{json .State.Health}}", name) var health types.Health err := json.Unmarshal([]byte(out), &health) assert.Equal(c, err, nil) return &health } func (s *DockerSuite) TestHealth(c *testing.T) { testRequires(c, DaemonIsLinux) // busybox doesn't work on Windows existingContainers := ExistingContainerIDs(c) imageName := "testhealth" buildImageSuccessfully(c, imageName, build.WithDockerfile(`FROM busybox RUN echo OK > /status CMD ["/bin/sleep", "120"] STOPSIGNAL SIGKILL HEALTHCHECK --interval=1s --timeout=30s \ CMD cat /status`)) // No health status before starting name := "test_health" cid, _ := dockerCmd(c, "create", "--name", name, imageName) out, _ := dockerCmd(c, "ps", "-a", "--format={{.ID}} {{.Status}}") out = RemoveOutputForExistingElements(out, existingContainers) assert.Equal(c, out, cid[:12]+" Created\n") // Inspect the options out, _ = dockerCmd(c, "inspect", "--format=timeout={{.Config.Healthcheck.Timeout}} interval={{.Config.Healthcheck.Interval}} retries={{.Config.Healthcheck.Retries}} test={{.Config.Healthcheck.Test}}", name) assert.Equal(c, out, "timeout=30s interval=1s retries=0 test=[CMD-SHELL cat /status]\n") // Start dockerCmd(c, "start", name) waitForHealthStatus(c, name, "starting", "healthy") // Make it fail dockerCmd(c, "exec", name, "rm", "/status") waitForHealthStatus(c, name, "healthy", "unhealthy") // Inspect the status out, _ = dockerCmd(c, "inspect", "--format={{.State.Health.Status}}", name) assert.Equal(c, out, "unhealthy\n") // Make it healthy again dockerCmd(c, "exec", name, "touch", "/status") waitForHealthStatus(c, name, "unhealthy", "healthy") // Remove container dockerCmd(c, "rm", "-f", name) // Disable the check from the CLI dockerCmd(c, "create", "--name=noh", "--no-healthcheck", imageName) out, _ = dockerCmd(c, "inspect", "--format={{.Config.Healthcheck.Test}}", "noh") assert.Equal(c, out, "[NONE]\n") dockerCmd(c, "rm", "noh") // Disable the check with a new build buildImageSuccessfully(c, "no_healthcheck", build.WithDockerfile(`FROM testhealth HEALTHCHECK NONE`)) out, _ = dockerCmd(c, "inspect", "--format={{.Config.Healthcheck.Test}}", "no_healthcheck") assert.Equal(c, out, "[NONE]\n") // Enable the checks from the CLI _, _ = dockerCmd(c, "run", "-d", "--name=fatal_healthcheck", "--health-interval=1s", "--health-retries=3", "--health-cmd=cat /status", "no_healthcheck") waitForHealthStatus(c, "fatal_healthcheck", "starting", "healthy") health := getHealth(c, "fatal_healthcheck") assert.Equal(c, health.Status, "healthy") assert.Equal(c, health.FailingStreak, 0) last := health.Log[len(health.Log)-1] assert.Equal(c, last.ExitCode, 0) assert.Equal(c, last.Output, "OK\n") // Fail the check dockerCmd(c, "exec", "fatal_healthcheck", "rm", "/status") waitForHealthStatus(c, "fatal_healthcheck", "healthy", "unhealthy") failsStr, _ := dockerCmd(c, "inspect", "--format={{.State.Health.FailingStreak}}", "fatal_healthcheck") fails, err := strconv.Atoi(strings.TrimSpace(failsStr)) assert.Assert(c, err == nil) assert.Equal(c, fails >= 3, true) dockerCmd(c, "rm", "-f", "fatal_healthcheck") // Check timeout // Note: if the interval is too small, it seems that Docker spends all its time running health // checks and never gets around to killing it. _, _ = dockerCmd(c, "run", "-d", "--name=test", "--health-interval=1s", "--health-cmd=sleep 5m", "--health-timeout=1s", imageName) waitForHealthStatus(c, "test", "starting", "unhealthy") health = getHealth(c, "test") last = health.Log[len(health.Log)-1] assert.Equal(c, health.Status, "unhealthy") assert.Equal(c, last.ExitCode, -1) assert.Equal(c, last.Output, "Health check exceeded timeout (1s)") dockerCmd(c, "rm", "-f", "test") // Check JSON-format buildImageSuccessfully(c, imageName, build.WithDockerfile(`FROM busybox RUN echo OK > /status CMD ["/bin/sleep", "120"] STOPSIGNAL SIGKILL HEALTHCHECK --interval=1s --timeout=30s \ CMD ["cat", "/my status"]`)) out, _ = dockerCmd(c, "inspect", "--format={{.Config.Healthcheck.Test}}", imageName) assert.Equal(c, out, "[CMD cat /my status]\n") } // GitHub #33021 func (s *DockerSuite) TestUnsetEnvVarHealthCheck(c *testing.T) { testRequires(c, DaemonIsLinux) // busybox doesn't work on Windows imageName := "testhealth" buildImageSuccessfully(c, imageName, build.WithDockerfile(`FROM busybox HEALTHCHECK --interval=1s --timeout=5s --retries=5 CMD /bin/sh -c "sleep 1" ENTRYPOINT /bin/sh -c "sleep 600"`)) name := "env_test_health" // No health status before starting dockerCmd(c, "run", "-d", "--name", name, "-e", "FOO", imageName) defer func() { dockerCmd(c, "rm", "-f", name) dockerCmd(c, "rmi", imageName) }() // Start dockerCmd(c, "start", name) waitForHealthStatus(c, name, "starting", "healthy") }