4d8ea1b3a7
The Graph client previously failed the call on the first 429/503. The request loop now retries these transient statuses before giving up. Behavior: - 429 and 503 are retried up to OUTLOOK_MAX_RETRIES times. - Retry-After header is honored when Graph sends it, clamped to MAX_RETRY_DELAY_MS. - Otherwise exponential backoff with full jitter, same clamp. - 401 still throws UNAUTHORIZED immediately (no retry, no point). - Other 4xx (400/403/404, etc.) are NOT retried -- these are caller errors, retrying just burns the rate-limit budget. New config knobs, all env-overridable: - OUTLOOK_MAX_RETRIES (default 3) - OUTLOOK_BASE_RETRY_DELAY_MS (default 1000) - OUTLOOK_MAX_RETRY_DELAY_MS (default 30000) Implementation: - Refactored the request into makeSingleRequest + optionsForRequest helpers so the retry loop sits above them without duplicating the response parsing. - Empty-body success (202/204, e.g. sendMail, DELETE) is preserved. - sleep and getRetryDelay are exported for the test. Tests: - tests/backoff.test.js: spins up a local HTTPS server, asserts getRetryDelay honors Retry-After and clamps to MAX_RETRY_DELAY_MS, and that callGraphAPI retries on 429 and fails after maxAttempts.
54 lines
2.5 KiB
JavaScript
54 lines
2.5 KiB
JavaScript
/**
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* Configuration for Outlook MCP Server
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*/
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const path = require('path');
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const os = require('os');
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// Ensure we have a home directory path even if process.env.HOME is undefined
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const homeDir = process.env.HOME || process.env.USERPROFILE || os.homedir() || '/tmp';
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module.exports = {
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// Server information
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SERVER_NAME: "outlook-assistant-main",
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SERVER_VERSION: "1.0.1",
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// Test mode setting
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USE_TEST_MODE: process.env.USE_TEST_MODE === 'true',
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// Debug mode setting
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DEBUG_MODE: process.env.DEBUG_MODE === 'true',
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// Authentication configuration
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AUTH_CONFIG: {
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clientId: process.env.MS_CLIENT_ID || '',
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// Optional: set MS_CLIENT_SECRET for confidential client app registrations.
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// Public client apps (Allow public client flows enabled, no secret) leave this blank.
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clientSecret: process.env.MS_CLIENT_SECRET || '',
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scopes: ['Mail.Read', 'Mail.ReadWrite', 'Mail.Send', 'User.Read', 'Calendars.Read', 'Calendars.ReadWrite', 'MailboxSettings.ReadWrite', 'offline_access'],
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tokenStorePath: process.env.OUTLOOK_TOKEN_STORE_PATH || path.join(homeDir, '.outlook-mcp-tokens.json'),
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// Device code flow: polling interval in seconds (Microsoft returns the recommended interval)
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deviceCodePollingInterval: 5
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},
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// Microsoft Graph API
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GRAPH_API_ENDPOINT: 'https://graph.microsoft.com/v1.0/',
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// Calendar constants
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CALENDAR_SELECT_FIELDS: 'id,subject,bodyPreview,start,end,location,organizer,attendees,isAllDay,isCancelled,recurrence',
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// Email constants
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EMAIL_SELECT_FIELDS: 'id,subject,from,toRecipients,ccRecipients,receivedDateTime,bodyPreview,hasAttachments,importance,isRead,conversationId',
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EMAIL_DETAIL_FIELDS: 'id,subject,from,toRecipients,ccRecipients,bccRecipients,receivedDateTime,bodyPreview,body,hasAttachments,importance,isRead,internetMessageHeaders',
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// Default timezone for calendar event creation and display (IANA tz name, e.g. 'America/New_York').
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// Override via MS_TIMEZONE env var. Graph API accepts IANA timezone identifiers.
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DEFAULT_TIMEZONE: process.env.MS_TIMEZONE || 'America/New_York',
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DEFAULT_PAGE_SIZE: 25,
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MAX_RESULT_COUNT: 500,
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// Retry/backoff configuration for Microsoft Graph throttling.
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// Honor Retry-After when Graph sends it; otherwise use exponential backoff.
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MAX_RETRIES: parseInt(process.env.OUTLOOK_MAX_RETRIES, 10) || 3,
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BASE_RETRY_DELAY_MS: parseInt(process.env.OUTLOOK_BASE_RETRY_DELAY_MS, 10) || 1000,
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MAX_RETRY_DELAY_MS: parseInt(process.env.OUTLOOK_MAX_RETRY_DELAY_MS, 10) || 30000
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};
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