Add logger for CLI telemetry

integration/libs/telemetry/telemetry_test.go

@@ -0,0 +1,91 @@
+package telemetry_test
+
+import (
+	"context"
+	"net/http"
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/databricks/cli/integration/internal/acc"
+	"github.com/databricks/cli/libs/telemetry"
+	"github.com/databricks/cli/libs/telemetry/events"
+	"github.com/databricks/databricks-sdk-go/client"
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// Wrapper to capture the response from the API client since that's not directly
+// accessible from the logger.
+type apiClientWrapper struct {
+	response  *telemetry.ResponseBody
+	apiClient *client.DatabricksClient
+}
+
+func (wrapper *apiClientWrapper) Do(ctx context.Context, method, path string,
+	headers map[string]string, request, response any,
+	visitors ...func(*http.Request) error,
+) error {
+	err := wrapper.apiClient.Do(ctx, method, path, headers, request, response, visitors...)
+	wrapper.response = response.(*telemetry.ResponseBody)
+	return err
+}
+
+func TestTelemetryLogger(t *testing.T) {
+	events := []telemetry.DatabricksCliLog{
+		{
+			CliTestEvent: &events.CliTestEvent{
+				Name: events.DummyCliEnumValue1,
+			},
+		},
+		{
+			BundleInitEvent: &events.BundleInitEvent{
+				Uuid:         uuid.New().String(),
+				TemplateName: "abc",
+				TemplateEnumArgs: []events.BundleInitTemplateEnumArg{
+					{
+						Key:   "a",
+						Value: "b",
+					},
+					{
+						Key:   "c",
+						Value: "d",
+					},
+				},
+			},
+		},
+	}
+
+	assert.Equal(t, len(events), reflect.TypeOf(telemetry.DatabricksCliLog{}).NumField(),
+		"Number of events should match the number of fields in DatabricksCliLog. Please add a new event to this test.")
+
+	ctx, w := acc.WorkspaceTest(t)
+	ctx = telemetry.WithDefaultLogger(ctx)
+
+	// Extend the maximum wait time for the telemetry flush just for this test.
+	oldV := telemetry.MaxAdditionalWaitTime
+	telemetry.MaxAdditionalWaitTime = 1 * time.Hour
+	t.Cleanup(func() {
+		telemetry.MaxAdditionalWaitTime = oldV
+	})
+
+	for _, event := range events {
+		telemetry.Log(ctx, event)
+	}
+
+	apiClient, err := client.New(w.W.Config)
+	require.NoError(t, err)
+
+	// Flush the events.
+	wrapper := &apiClientWrapper{
+		apiClient: apiClient,
+	}
+	telemetry.Flush(ctx, wrapper)
+
+	// Assert that the events were logged.
+	assert.Equal(t, telemetry.ResponseBody{
+		NumProtoSuccess: int64(len(events)),
+		Errors:          []telemetry.LogError{},
+	}, *wrapper.response)
+}

libs/telemetry/api.go

@@ -0,0 +1,19 @@
+package telemetry
+
+// RequestBody is the request body type bindings for the /telemetry-ext API endpoint.
+type RequestBody struct {
+	UploadTime int64    `json:"uploadTime"`
+	Items      []string `json:"items"`
+	ProtoLogs  []string `json:"protoLogs"`
+}
+
+// ResponseBody is the response body type bindings for the /telemetry-ext API endpoint.
+type ResponseBody struct {
+	Errors          []LogError `json:"errors"`
+	NumProtoSuccess int64      `json:"numProtoSuccess"`
+}
+
+type LogError struct {
+	Message   string `json:"message"`
+	ErrorType string `json:"ErrorType"`
+}

libs/telemetry/context.go

@@ -0,0 +1,62 @@
+package telemetry
+
+import (
+	"context"
+	"fmt"
+)
+
+// Private type to store the telemetry logger in the context
+type telemetryLogger int
+
+// Key to store the telemetry logger in the context
+var telemetryLoggerKey telemetryLogger
+
+func WithDefaultLogger(ctx context.Context) context.Context {
+	v := ctx.Value(telemetryLoggerKey)
+
+	// If no logger is set in the context, set the default logger.
+	if v == nil {
+		nctx := context.WithValue(ctx, telemetryLoggerKey, &defaultLogger{})
+		return nctx
+	}
+
+	switch v.(type) {
+	case *defaultLogger:
+		panic(fmt.Errorf("default telemetry logger already set in the context: %T", v))
+	case *mockLogger:
+		// Do nothing. Unit and integration tests set the mock logger in the context
+		// to avoid making actual API calls. Thus WithDefaultLogger should silently
+		// ignore the mock logger.
+	default:
+		panic(fmt.Errorf("unexpected telemetry logger type: %T", v))
+	}
+
+	return ctx
+}
+
+// WithMockLogger sets a mock telemetry logger in the context. It overrides the
+// default logger if it is already set in the context.
+func WithMockLogger(ctx context.Context) context.Context {
+	v := ctx.Value(telemetryLoggerKey)
+	if v != nil {
+		panic(fmt.Errorf("telemetry logger already set in the context: %T", v))
+	}
+
+	return context.WithValue(ctx, telemetryLoggerKey, &mockLogger{})
+}
+
+func fromContext(ctx context.Context) Logger {
+	v := ctx.Value(telemetryLoggerKey)
+	if v == nil {
+		panic(fmt.Errorf("telemetry logger not found in the context"))
+	}
+
+	switch vv := v.(type) {
+	case *defaultLogger:
+		return vv
+	case *mockLogger:
+		return vv
+	default:
+		panic(fmt.Errorf("unexpected telemetry logger type: %T", v))
+	}
+}

libs/telemetry/context_test.go

@@ -0,0 +1,77 @@
+package telemetry
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWithDefaultLogger(t *testing.T) {
+	ctx := context.Background()
+
+	// No default logger set
+	ctx1 := WithDefaultLogger(ctx)
+	assert.Equal(t, &defaultLogger{}, ctx1.Value(telemetryLoggerKey))
+
+	// Default logger already set
+	assert.PanicsWithError(t, "default telemetry logger already set in the context: *telemetry.defaultLogger", func() {
+		WithDefaultLogger(ctx1)
+	})
+
+	// Mock logger already set
+	ctx2 := WithMockLogger(ctx)
+	assert.NotPanics(t, func() {
+		WithDefaultLogger(ctx2)
+	})
+
+	// Unexpected logger type
+	type foobar struct{}
+	ctx3 := context.WithValue(ctx, telemetryLoggerKey, &foobar{})
+	assert.PanicsWithError(t, "unexpected telemetry logger type: *telemetry.foobar", func() {
+		WithDefaultLogger(ctx3)
+	})
+}
+
+func TestWithMockLogger(t *testing.T) {
+	ctx := context.Background()
+
+	// No logger set
+	ctx1 := WithMockLogger(ctx)
+	assert.Equal(t, &mockLogger{}, ctx1.Value(telemetryLoggerKey))
+
+	// Logger already set
+	assert.PanicsWithError(t, "telemetry logger already set in the context: *telemetry.mockLogger", func() {
+		WithMockLogger(ctx1)
+	})
+
+	// Default logger already set
+	ctx2 := WithDefaultLogger(ctx)
+	assert.PanicsWithError(t, "telemetry logger already set in the context: *telemetry.defaultLogger", func() {
+		WithMockLogger(ctx2)
+	})
+}
+
+func TestFromContext(t *testing.T) {
+	ctx := context.Background()
+
+	// No logger set
+	assert.PanicsWithError(t, "telemetry logger not found in the context", func() {
+		fromContext(ctx)
+	})
+
+	// Default logger set
+	ctx1 := WithDefaultLogger(ctx)
+	assert.Equal(t, &defaultLogger{}, fromContext(ctx1))
+
+	// Mock logger set
+	ctx2 := WithMockLogger(ctx)
+	assert.Equal(t, &mockLogger{}, fromContext(ctx2))
+
+	// Unexpected logger type
+	type foobar struct{}
+	ctx3 := context.WithValue(ctx, telemetryLoggerKey, &foobar{})
+	assert.PanicsWithError(t, "unexpected telemetry logger type: *telemetry.foobar", func() {
+		fromContext(ctx3)
+	})
+}

libs/telemetry/events/bundle_init.go

@@ -0,0 +1,39 @@
+package events
+
+// Corresponds to the `DatabricksCliBundleInitEvent` proto message in `databricks_cli_log.proto`
+// as of 20 Dec 2024.
+type BundleInitEvent struct {
+	// UUID associated with the DAB itself. This is serialized into the DAB
+	// when a user runs `databricks bundle init` and all subsequent deployments of
+	// that DAB can then be associated with this init event.
+	Uuid string `json:"bundle_uuid,omitempty"`
+
+	// Name of the template initialized when the user ran `databricks bundle init`
+	// This is only populated when the template is a first party template like
+	// mlops-stacks or default-python.
+	TemplateName string `json:"template_name,omitempty"`
+
+	// Arguments used by the user to initialize the template. Only enum
+	// values will be set here by the Databricks CLI.
+	//
+	// We use a generic map representation here because a bundle template's args are
+	// managed in the template itself and maintaining a copy typed schema for it here
+	// will be untenable in the long term.
+	TemplateEnumArgs []BundleInitTemplateEnumArg `json:"template_enum_args,omitempty"`
+}
+
+type BundleInitTemplateEnumArg struct {
+	// Valid key values for the template. These correspond to the keys specified in
+	// the "properties" section of the `databricks_template_schema.json` file.
+	//
+	// Note: `databricks_template_schema.json` contains a JSON schema type specification
+	// for the arguments that the template accepts.
+	Key string `json:"key"`
+
+	// Value that the user set for the field. This is only populated for properties
+	// that have the "enum" field specified in the JSON schema type specification.
+	//
+	// The Databricks CLI ensures that the value here is one of the "enum" values from
+	// the template specification.
+	Value string `json:"value"`
+}

libs/telemetry/events/test_event.go

@@ -0,0 +1,16 @@
+package events
+
+// dummy event for testing the telemetry pipeline. Corresponds to `DatabricksCliTestEvent`
+// proto in `databricks_cli_log.proto` as of 20 Dec 2024.
+type CliTestEvent struct {
+	Name DummyCliEnum `json:"name,omitempty"`
+}
+
+type DummyCliEnum string
+
+const (
+	DummyCliEnumUnspecified DummyCliEnum = "DUMMY_CLI_ENUM_UNSPECIFIED"
+	DummyCliEnumValue1      DummyCliEnum = "VALUE1"
+	DummyCliEnumValue2      DummyCliEnum = "VALUE2"
+	DummyCliEnumValue3      DummyCliEnum = "VALUE3"
+)

libs/telemetry/frontend_log.go

@@ -0,0 +1,22 @@
+package telemetry
+
+import "github.com/databricks/cli/libs/telemetry/events"
+
+// This corresponds to the FrontendLog lumberjack proto in universe.
+// FrontendLog is the top-level struct for any client-side logs at Databricks
+// regardless of whether they are generated from the CLI or the web UI.
+type FrontendLog struct {
+	// A unique identifier for the log event generated from the CLI.
+	FrontendLogEventID string `json:"frontend_log_event_id,omitempty"`
+
+	Entry FrontendLogEntry `json:"entry,omitempty"`
+}
+
+type FrontendLogEntry struct {
+	DatabricksCliLog DatabricksCliLog `json:"databricks_cli_log,omitempty"`
+}
+
+type DatabricksCliLog struct {
+	CliTestEvent    *events.CliTestEvent    `json:"cli_test_event,omitempty"`
+	BundleInitEvent *events.BundleInitEvent `json:"bundle_init_event,omitempty"`
+}