@mcp-abap-adt/connection/dist/connection/BaseAbapConnection.js

ABAP connection layer for MCP ABAP ADT server

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.BaseAbapConnection = void 0;
const axios_1 = require("axios");
const AbstractAbapConnection_js_1 = require("./AbstractAbapConnection.js");
/**
 * Basic Authentication connection for on-premise SAP systems
 */
class BaseAbapConnection extends AbstractAbapConnection_js_1.AbstractAbapConnection {
    constructor(config, logger, sessionId, options) {
        BaseAbapConnection.validateConfig(config);
        super(config, logger || null, sessionId, options);
    }
    /**
     * Connect to SAP system with Basic Auth
     * Fetches CSRF token which also establishes session cookies
     */
    async connect() {
        const baseUrl = await this.getBaseUrl();
        const discoveryUrl = `${baseUrl}/sap/bc/adt/discovery`;
        this.logger?.debug(`[DEBUG] BaseAbapConnection - Connecting to SAP system: ${discoveryUrl}`);
        try {
            // Try to get CSRF token (this will also get cookies)
            const token = await this.fetchCsrfToken(discoveryUrl, 3, 1000);
            this.setCsrfToken(token);
            this.logger?.debug('Successfully connected to SAP system', {
                hasCsrfToken: !!this.getCsrfToken(),
                hasCookies: !!this.getCookies(),
                cookieLength: this.getCookies()?.length || 0,
            });
        }
        catch (error) {
            // For Basic auth, log warning but don't fail
            // The retry logic in makeAdtRequest will handle transient errors automatically
            const errorMsg = error instanceof Error ? error.message : String(error);
            this.logger?.warn(`[WARN] BaseAbapConnection - Could not connect to SAP system upfront: ${errorMsg}. Will retry on first request.`);
            // Still try to extract cookies from error response if available
            if (error instanceof axios_1.AxiosError && error.response?.headers) {
                // updateCookiesFromResponse is private, but cookies are extracted in fetchCsrfToken
                if (this.getCookies()) {
                    this.logger?.debug(`[DEBUG] BaseAbapConnection - Cookies extracted from error response during connect (first 100 chars): ${this.getCookies()?.substring(0, 100)}...`);
                }
            }
        }
    }
    buildAuthorizationHeader() {
        const { username, password } = this.getConfig();
        const safeUsername = username ?? '';
        const safePassword = password ?? '';
        const token = Buffer.from(`${safeUsername}:${safePassword}`).toString('base64');
        return `Basic ${token}`;
    }
    static validateConfig(config) {
        if (config.authType !== 'basic') {
            throw new Error(`Basic authentication connection expects authType "basic", got "${config.authType}"`);
        }
        if (!config.username || !config.password) {
            throw new Error('Basic authentication requires both username and password');
        }
        if (!config.client) {
            throw new Error('Basic authentication requires SAP_CLIENT to be provided');
        }
    }
}
exports.BaseAbapConnection = BaseAbapConnection;