@inso_web/els-mcp/dist/observability/tracing.js

MCP-сервер поверх INSO Error Logs Service. Read-only tools (search, analytics, fingerprinting, correlations) для подключения Claude Desktop/Code и ChatGPT к логам ошибок. Streamable HTTP transport + stdio для npx-запуска.

const NOOP = {
    shutdown: async () => { },
    enabled: false,
};
export async function setupTracing(opts = {}) {
    const endpoint = process.env.OTEL_EXPORTER_OTLP_ENDPOINT;
    if (!endpoint) {
        opts.log?.debug?.('OTel disabled (OTEL_EXPORTER_OTLP_ENDPOINT not set)');
        return NOOP;
    }
    try {
        const [{ NodeSDK }, autoInst, otlp, resourceModule] = await Promise.all([
            import('@opentelemetry/sdk-node'),
            import('@opentelemetry/auto-instrumentations-node'),
            import('@opentelemetry/exporter-trace-otlp-proto'),
            import('@opentelemetry/resources'),
        ]);
        const sdkAny = NodeSDK;
        // Resource API в @opentelemetry/resources может экспортироваться по-разному
        // (Resource как класс или resourceFromAttributes-функция в новых версиях).
        const resAny = resourceModule;
        const attrs = {
            'service.name': 'els-mcp',
            'service.version': process.env.GIT_SHA ?? '0.1.0-alpha.0',
            'deployment.environment': process.env.NODE_ENV ?? 'development',
        };
        const resource = resAny.resourceFromAttributes
            ? resAny.resourceFromAttributes(attrs)
            : resAny.Resource
                ? new resAny.Resource(attrs)
                : undefined;
        const sdk = new sdkAny({
            ...(resource ? { resource } : {}),
            traceExporter: new otlp.OTLPTraceExporter({ url: endpoint }),
            instrumentations: [autoInst.getNodeAutoInstrumentations()],
        });
        sdk.start();
        opts.log?.info?.({ endpoint }, 'OpenTelemetry tracing started');
        return {
            enabled: true,
            shutdown: async () => {
                try {
                    await sdk.shutdown();
                }
                catch (err) {
                    opts.log?.warn?.({ err: err.message }, 'OTel shutdown failed');
                }
            },
        };
    }
    catch (err) {
        opts.log?.warn?.({ err: err.message }, 'OTel setup failed; continuing without tracing');
        return NOOP;
    }
}
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