import { supabase } from '../commons/supabase.js'; import { logger } from '../commons/logger.js'; import { FunctionRegistry } from '../commons/registry.js'; /** * Middleware to track API usage for billing and monitoring * Tracks request start and updates with completion status */ export async function usageTrackingMiddleware(c, next) { const startTime = Date.now(); // Extract user ID from context (set by auth middleware) const userId = c.get('userId'); // Skip tracking for unauthenticated requests if (!userId) { logger.trace('[UsageTracking] Skipping - No userId'); await next(); return; } // Determine product and action const path = c.req.path; const method = c.req.method; // Use Registry to find config const config = FunctionRegistry.findByRoute(path, method); const product = config?.productId; const action = config?.actionId; logger.trace(`[UsageTracking] Identified: product=${product}, action=${action}`); // Skip if not a tracked endpoint if (!product || !action || !config) { logger.info('[UsageTracking] Skipping - Not a tracked endpoint'); await next(); return; } // Generate a job ID for this request const jobId = `${product}_${action}_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`; // Create initial usage record with 'processing' status let usageId = null; try { const { data, error } = await supabase .from('api_usage') .insert({ user_id: userId, endpoint: path, method, product, action, status: 'processing', job_id: jobId, cancellable: config.cancellable || false, cost_units: config.costUnits, metadata: { query: c.req.query(), userAgent: c.req.header('user-agent'), ip: c.req.header('x-forwarded-for') || c.req.header('x-real-ip'), }, }) .select('id') .single(); if (error) { logger.error({ err: error }, '[UsageTracking] Error creating usage record'); } else if (data) { logger.trace(`[UsageTracking] Created usage record: ${data.id}`); usageId = data.id; // Store usage ID in context for potential use in handlers c.set('usageId', usageId); c.set('jobId', jobId); } else { logger.trace('[UsageTracking] No data returned from insert'); } } catch (err) { logger.error({ err }, 'Failed to create usage record'); } // Execute the request let requestError = null; try { await next(); } catch (err) { requestError = err; throw err; // Re-throw to let error handler deal with it } finally { // Update usage record with completion status const endTime = Date.now(); const responseTime = endTime - startTime; if (usageId) { // Check if handler requested to skip status update (e.g. for background jobs) const skipUpdate = c.get('skipUsageStatusUpdate'); if (!skipUpdate) { updateUsageRecord({ usageId, responseStatus: c.res.status, responseTimeMs: responseTime, error: requestError, }).catch(err => { logger.error({ err }, 'Failed to update usage record'); }); } } } } /** * Update usage record with completion status */ export async function updateUsageRecord(data) { const status = data.error ? 'failed' : (data.responseStatus >= 200 && data.responseStatus < 300) ? 'completed' : 'failed'; const updateData = { status, response_status: data.responseStatus, response_time_ms: data.responseTimeMs, }; if (data.error) { updateData.error_message = data.error.message; } const { error } = await supabase .from('api_usage') .update(updateData) .eq('id', data.usageId); if (error) { logger.error({ err: error }, 'Error updating usage record'); } } /** * Helper function to manually track usage (for non-middleware scenarios) */ export async function trackUsage(data) { try { const { data: record, error } = await supabase .from('api_usage') .insert({ user_id: data.userId, endpoint: data.endpoint, method: data.method, product: data.product, action: data.action, status: data.responseStatus ? 'completed' : 'processing', job_id: data.jobId, cancellable: data.cancellable, response_status: data.responseStatus, response_time_ms: data.responseTimeMs, cost_units: data.costUnits, metadata: data.metadata, api_key_id: data.apiKeyId, }) .select('id') .single(); if (error) { logger.error({ err: error }, 'Error tracking usage'); return null; } return record?.id || null; } catch (err) { logger.error({ err }, 'Failed to track usage'); return null; } } /** * Cancel a job by job ID */ export async function cancelJob(userId, jobId) { try { const { data, error } = await supabase .from('api_usage') .update({ status: 'cancelled', }) .eq('user_id', userId) .eq('job_id', jobId) .eq('cancellable', true) .in('status', ['pending', 'processing']) .select('id'); if (error) { logger.error({ err: error }, 'Error cancelling job'); return false; } return !!data && data.length > 0; } catch (err) { logger.error({ err }, 'Failed to cancel job'); return false; } } /** * Get active (cancellable) jobs for a user */ export async function getActiveJobs(userId) { try { const { data, error } = await supabase .from('api_usage') .select('id, job_id, product, action, status, created_at, metadata') .eq('user_id', userId) .eq('cancellable', true) .in('status', ['pending', 'processing']) .order('created_at', { ascending: false }); if (error) { logger.error({ err: error }, 'Error fetching active jobs'); return []; } return data || []; } catch (err) { logger.error({ err }, 'Failed to fetch active jobs'); return []; } } /** * Pause a job by job ID */ export async function pauseJob(userId, jobId) { try { const { data, error } = await supabase .from('api_usage') .update({ status: 'paused', }) .eq('user_id', userId) .eq('job_id', jobId) .eq('cancellable', true) .eq('status', 'processing') // Only processing jobs can be paused .select('id'); if (error) { logger.error({ err: error }, 'Error pausing job'); return false; } return !!data && data.length > 0; } catch (err) { logger.error({ err }, 'Failed to pause job'); return false; } } /** * Resume a paused job by job ID */ export async function resumeJob(userId, jobId) { try { const { data, error } = await supabase .from('api_usage') .update({ status: 'processing', }) .eq('user_id', userId) .eq('job_id', jobId) .eq('cancellable', true) .eq('status', 'paused') // Only paused jobs can be resumed .select('id'); if (error) { logger.error({ err: error }, 'Error resuming job'); return false; } return !!data && data.length > 0; } catch (err) { logger.error({ err }, 'Failed to resume job'); return false; } } //# 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