@gabrielmaialva33/mcp-filesystem/build/src/metrics/index.js

MCP server for secure filesystem access

export class OperationMetrics {
    static instance;
    operations = {};
    startTime;
    constructor() {
        this.startTime = performance.now();
    }
    static getInstance() {
        if (!OperationMetrics.instance) {
            OperationMetrics.instance = new OperationMetrics();
        }
        return OperationMetrics.instance;
    }
    startOperation(name) {
        if (!this.operations[name]) {
            this.operations[name] = { count: 0, errors: 0, totalTime: 0 };
        }
        const startTime = performance.now();
        this.operations[name].count++;
        return () => {
            const endTime = performance.now();
            const duration = endTime - startTime;
            this.operations[name].totalTime += duration;
        };
    }
    recordError(name) {
        if (!this.operations[name]) {
            this.operations[name] = { count: 0, errors: 0, totalTime: 0 };
        }
        this.operations[name].errors++;
    }
    getMetrics() {
        const result = {};
        for (const [name, data] of Object.entries(this.operations)) {
            result[name] = {
                count: data.count,
                errors: data.errors,
                avgTime: data.count > 0 ? data.totalTime / data.count : 0,
            };
        }
        result['uptime_ms'] = {
            count: 1,
            errors: 0,
            avgTime: performance.now() - this.startTime,
        };
        return result;
    }
    reset() {
        this.operations = {};
        this.startTime = performance.now();
    }
}
export const metrics = OperationMetrics.getInstance();
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