Merge pull request #5372 from hashicorp/f-docker-logging-driver

drivers/docker: rename logging `type` to `driver`

Author: schmichael

drivers/docker/config.go

@@ -256,6 +256,7 @@ var (
 		"load":               hclspec.NewAttr("load", "string", false),
 		"logging": hclspec.NewBlock("logging", false, hclspec.NewObject(map[string]*hclspec.Spec{
 			"type":   hclspec.NewAttr("type", "string", false),
+			"driver": hclspec.NewAttr("driver", "string", false),
 			"config": hclspec.NewAttr("config", "list(map(string))", false),
 		})),
 		"mac_address": hclspec.NewAttr("mac_address", "string", false),
@@ -397,6 +398,7 @@ func (d DockerDevice) toDockerDevice() (docker.Device, error) {
 
 type DockerLogging struct {
 	Type   string             `codec:"type"`
+	Driver string             `codec:"driver"`
 	Config hclutils.MapStrStr `codec:"config"`
 }
 

drivers/docker/config_test.go

@@ -181,7 +181,8 @@ config {
   }
   load = "/tmp/image.tar.gz"
   logging {
-    type = "json-file"
+    driver = "json-file-driver"
+    type   = "json-file"
     config {
       "max-file" = "3"
       "max-size" = "10m"
@@ -308,7 +309,8 @@ config {
 		},
 		LoadImage: "/tmp/image.tar.gz",
 		Logging: DockerLogging{
-			Type: "json-file",
+			Driver: "json-file-driver",
+			Type:   "json-file",
 			Config: map[string]string{
 				"max-file": "3",
 				"max-size": "10m",

drivers/docker/driver.go

@@ -706,8 +706,13 @@ func (d *Driver) createContainerConfig(task *drivers.TaskConfig, driverConfig *T
 		hostConfig.MemorySwap = task.Resources.LinuxResources.MemoryLimitBytes // MemorySwap is memory + swap.
 	}
 
+	loggingDriver := driverConfig.Logging.Type
+	if loggingDriver == "" {
+		loggingDriver = driverConfig.Logging.Driver
+	}
+
 	hostConfig.LogConfig = docker.LogConfig{
-		Type:   driverConfig.Logging.Type,
+		Type:   loggingDriver,
 		Config: driverConfig.Logging.Config,
 	}
 

drivers/docker/driver_test.go

@@ -930,6 +930,52 @@ func TestDockerDriver_CreateContainerConfig(t *testing.T) {
 	require.EqualValues(t, opt, c.HostConfig.StorageOpt)
 }
 
+func TestDockerDriver_CreateContainerConfig_Logging(t *testing.T) {
+	t.Parallel()
+
+	cases := []struct {
+		name           string
+		loggingConfig  DockerLogging
+		expectedDriver string
+	}{
+		{
+			"simple type",
+			DockerLogging{Type: "fluentd"},
+			"fluentd",
+		},
+		{
+			"simple driver",
+			DockerLogging{Driver: "fluentd"},
+			"fluentd",
+		},
+		{
+			"type takes precedence",
+			DockerLogging{
+				Type:   "json-file",
+				Driver: "fluentd",
+			},
+			"json-file",
+		},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			task, cfg, _ := dockerTask(t)
+
+			cfg.Logging = c.loggingConfig
+			require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
+
+			dh := dockerDriverHarness(t, nil)
+			driver := dh.Impl().(*Driver)
+
+			cc, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
+			require.NoError(t, err)
+
+			require.Equal(t, c.expectedDriver, cc.HostConfig.LogConfig.Type)
+		})
+	}
+}
+
 func TestDockerDriver_CreateContainerConfigWithRuntimes(t *testing.T) {
 	if !tu.IsCI() {
 		t.Parallel()