Files
automaker/apps/server/src/services/event-hook-service.ts
2026-01-20 10:24:38 -05:00

395 lines
12 KiB
TypeScript

/**
* Event Hook Service - Executes custom actions when system events occur
*
* Listens to the event emitter and triggers configured hooks:
* - Shell commands: Executed with configurable timeout
* - HTTP webhooks: POST/GET/PUT/PATCH requests with variable substitution
*
* Also stores events to history for debugging and replay.
*
* Supported events:
* - feature_created: A new feature was created
* - feature_success: Feature completed successfully
* - feature_error: Feature failed with an error
* - auto_mode_complete: Auto mode finished all features (idle state)
* - auto_mode_error: Auto mode encountered a critical error
*/
import { exec } from 'child_process';
import { promisify } from 'util';
import { createLogger } from '@automaker/utils';
import type { EventEmitter } from '../lib/events.js';
import type { SettingsService } from './settings-service.js';
import type { EventHistoryService } from './event-history-service.js';
import type { FeatureLoader } from './feature-loader.js';
import type {
EventHook,
EventHookTrigger,
EventHookShellAction,
EventHookHttpAction,
} from '@automaker/types';
const execAsync = promisify(exec);
const logger = createLogger('EventHooks');
/** Default timeout for shell commands (30 seconds) */
const DEFAULT_SHELL_TIMEOUT = 30000;
/** Default timeout for HTTP requests (10 seconds) */
const DEFAULT_HTTP_TIMEOUT = 10000;
/**
* Context available for variable substitution in hooks
*/
interface HookContext {
featureId?: string;
featureName?: string;
projectPath?: string;
projectName?: string;
error?: string;
errorType?: string;
timestamp: string;
eventType: EventHookTrigger;
}
/**
* Auto-mode event payload structure
*/
interface AutoModeEventPayload {
type?: string;
featureId?: string;
featureName?: string;
passes?: boolean;
message?: string;
error?: string;
errorType?: string;
projectPath?: string;
}
/**
* Feature created event payload structure
*/
interface FeatureCreatedPayload {
featureId: string;
featureName?: string;
projectPath: string;
}
/**
* Event Hook Service
*
* Manages execution of user-configured event hooks in response to system events.
* Also stores events to history for debugging and replay.
*/
export class EventHookService {
private emitter: EventEmitter | null = null;
private settingsService: SettingsService | null = null;
private eventHistoryService: EventHistoryService | null = null;
private featureLoader: FeatureLoader | null = null;
private unsubscribe: (() => void) | null = null;
/**
* Initialize the service with event emitter, settings service, event history service, and feature loader
*/
initialize(
emitter: EventEmitter,
settingsService: SettingsService,
eventHistoryService?: EventHistoryService,
featureLoader?: FeatureLoader
): void {
this.emitter = emitter;
this.settingsService = settingsService;
this.eventHistoryService = eventHistoryService || null;
this.featureLoader = featureLoader || null;
// Subscribe to events
this.unsubscribe = emitter.subscribe((type, payload) => {
if (type === 'auto-mode:event') {
this.handleAutoModeEvent(payload as AutoModeEventPayload);
} else if (type === 'feature:created') {
this.handleFeatureCreatedEvent(payload as FeatureCreatedPayload);
}
});
logger.info('Event hook service initialized');
}
/**
* Cleanup subscriptions
*/
destroy(): void {
if (this.unsubscribe) {
this.unsubscribe();
this.unsubscribe = null;
}
this.emitter = null;
this.settingsService = null;
this.eventHistoryService = null;
this.featureLoader = null;
}
/**
* Handle auto-mode events and trigger matching hooks
*/
private async handleAutoModeEvent(payload: AutoModeEventPayload): Promise<void> {
if (!payload.type) return;
// Map internal event types to hook triggers
let trigger: EventHookTrigger | null = null;
switch (payload.type) {
case 'auto_mode_feature_complete':
trigger = payload.passes ? 'feature_success' : 'feature_error';
break;
case 'auto_mode_error':
// Feature-level error (has featureId) vs auto-mode level error
trigger = payload.featureId ? 'feature_error' : 'auto_mode_error';
break;
case 'auto_mode_idle':
trigger = 'auto_mode_complete';
break;
default:
// Other event types don't trigger hooks
return;
}
if (!trigger) return;
// Load feature name if we have featureId but no featureName
let featureName: string | undefined = undefined;
if (payload.featureId && payload.projectPath && this.featureLoader) {
try {
const feature = await this.featureLoader.get(payload.projectPath, payload.featureId);
if (feature?.title) {
featureName = feature.title;
}
} catch (error) {
logger.warn(`Failed to load feature ${payload.featureId} for event hook:`, error);
}
}
// Build context for variable substitution
const context: HookContext = {
featureId: payload.featureId,
featureName: payload.featureName,
projectPath: payload.projectPath,
projectName: payload.projectPath ? this.extractProjectName(payload.projectPath) : undefined,
error: payload.error || payload.message,
errorType: payload.errorType,
timestamp: new Date().toISOString(),
eventType: trigger,
};
// Execute matching hooks (pass passes for feature completion events)
await this.executeHooksForTrigger(trigger, context, { passes: payload.passes });
}
/**
* Handle feature:created events and trigger matching hooks
*/
private async handleFeatureCreatedEvent(payload: FeatureCreatedPayload): Promise<void> {
const context: HookContext = {
featureId: payload.featureId,
featureName: payload.featureName,
projectPath: payload.projectPath,
projectName: this.extractProjectName(payload.projectPath),
timestamp: new Date().toISOString(),
eventType: 'feature_created',
};
await this.executeHooksForTrigger('feature_created', context);
}
/**
* Execute all enabled hooks matching the given trigger and store event to history
*/
private async executeHooksForTrigger(
trigger: EventHookTrigger,
context: HookContext,
additionalData?: { passes?: boolean }
): Promise<void> {
// Store event to history (even if no hooks match)
if (this.eventHistoryService && context.projectPath) {
try {
await this.eventHistoryService.storeEvent({
trigger,
projectPath: context.projectPath,
featureId: context.featureId,
featureName: context.featureName,
error: context.error,
errorType: context.errorType,
passes: additionalData?.passes,
});
} catch (error) {
logger.error('Failed to store event to history:', error);
}
}
if (!this.settingsService) {
logger.warn('Settings service not available');
return;
}
try {
const settings = await this.settingsService.getGlobalSettings();
const hooks = settings.eventHooks || [];
// Filter to enabled hooks matching this trigger
const matchingHooks = hooks.filter((hook) => hook.enabled && hook.trigger === trigger);
if (matchingHooks.length === 0) {
return;
}
logger.info(`Executing ${matchingHooks.length} hook(s) for trigger: ${trigger}`);
// Execute hooks in parallel (don't wait for one to finish before starting next)
await Promise.allSettled(matchingHooks.map((hook) => this.executeHook(hook, context)));
} catch (error) {
logger.error('Error executing hooks:', error);
}
}
/**
* Execute a single hook
*/
private async executeHook(hook: EventHook, context: HookContext): Promise<void> {
const hookName = hook.name || hook.id;
try {
if (hook.action.type === 'shell') {
await this.executeShellHook(hook.action, context, hookName);
} else if (hook.action.type === 'http') {
await this.executeHttpHook(hook.action, context, hookName);
}
} catch (error) {
logger.error(`Hook "${hookName}" failed:`, error);
}
}
/**
* Execute a shell command hook
*/
private async executeShellHook(
action: EventHookShellAction,
context: HookContext,
hookName: string
): Promise<void> {
const command = this.substituteVariables(action.command, context);
const timeout = action.timeout || DEFAULT_SHELL_TIMEOUT;
logger.info(`Executing shell hook "${hookName}": ${command}`);
try {
const { stdout, stderr } = await execAsync(command, {
timeout,
maxBuffer: 1024 * 1024, // 1MB buffer
});
if (stdout) {
logger.debug(`Hook "${hookName}" stdout: ${stdout.trim()}`);
}
if (stderr) {
logger.warn(`Hook "${hookName}" stderr: ${stderr.trim()}`);
}
logger.info(`Shell hook "${hookName}" completed successfully`);
} catch (error) {
if ((error as NodeJS.ErrnoException).code === 'ETIMEDOUT') {
logger.error(`Shell hook "${hookName}" timed out after ${timeout}ms`);
}
throw error;
}
}
/**
* Execute an HTTP webhook hook
*/
private async executeHttpHook(
action: EventHookHttpAction,
context: HookContext,
hookName: string
): Promise<void> {
const url = this.substituteVariables(action.url, context);
const method = action.method || 'POST';
// Substitute variables in headers
const headers: Record<string, string> = {
'Content-Type': 'application/json',
};
if (action.headers) {
for (const [key, value] of Object.entries(action.headers)) {
headers[key] = this.substituteVariables(value, context);
}
}
// Substitute variables in body
let body: string | undefined;
if (action.body) {
body = this.substituteVariables(action.body, context);
} else if (method !== 'GET') {
// Default body with context information
body = JSON.stringify({
eventType: context.eventType,
timestamp: context.timestamp,
featureId: context.featureId,
featureName: context.featureName,
projectPath: context.projectPath,
projectName: context.projectName,
error: context.error,
});
}
logger.info(`Executing HTTP hook "${hookName}": ${method} ${url}`);
try {
const controller = new AbortController();
const timeoutId = setTimeout(() => controller.abort(), DEFAULT_HTTP_TIMEOUT);
const response = await fetch(url, {
method,
headers,
body: method !== 'GET' ? body : undefined,
signal: controller.signal,
});
clearTimeout(timeoutId);
if (!response.ok) {
logger.warn(`HTTP hook "${hookName}" received status ${response.status}`);
} else {
logger.info(`HTTP hook "${hookName}" completed successfully (status: ${response.status})`);
}
} catch (error) {
if ((error as Error).name === 'AbortError') {
logger.error(`HTTP hook "${hookName}" timed out after ${DEFAULT_HTTP_TIMEOUT}ms`);
}
throw error;
}
}
/**
* Substitute {{variable}} placeholders in a string
*/
private substituteVariables(template: string, context: HookContext): string {
return template.replace(/\{\{(\w+)\}\}/g, (match, variable) => {
const value = context[variable as keyof HookContext];
if (value === undefined || value === null) {
return '';
}
return String(value);
});
}
/**
* Extract project name from path
*/
private extractProjectName(projectPath: string): string {
const parts = projectPath.split(/[/\\]/);
return parts[parts.length - 1] || projectPath;
}
}
// Singleton instance
export const eventHookService = new EventHookService();