All files / src/app/api/admin/monitoring/traces/[id] route.ts

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/**
 * Trace Detail API
 *
 * GET /api/admin/monitoring/traces/[id]
 * Returns a single trace with all its spans.
 */

import { NextRequest, NextResponse } from 'next/server';
import { prisma } from '@/lib/prisma';
import { logger } from '@/lib/logging';

interface RouteParams {
  params: Promise<{ id: string }>;
}

export async function GET(request: NextRequest, { params }: RouteParams) {
  try {
    const { id } = await params;

    // Get trace with all spans
    const trace = await prisma.trace.findUnique({
      where: { id },
      include: {
        spans: {
          orderBy: { startTime: 'asc' },
        },
      },
    });

    if (!trace) {
      return NextResponse.json(
        { error: 'Trace not found' },
        { status: 404 }
      );
    }

    // Build span tree for waterfall visualization
    const spanMap = new Map(trace.spans.map((s) => [s.id, s]));
    const rootSpans: typeof trace.spans = [];
    const childMap = new Map<string, typeof trace.spans>();

    for (const span of trace.spans) {
      if (!span.parentId || !spanMap.has(span.parentId)) {
        rootSpans.push(span);
      } else {
        if (!childMap.has(span.parentId)) {
          childMap.set(span.parentId, []);
        }
        childMap.get(span.parentId)!.push(span);
      }
    }

    // Build hierarchical span structure
    interface SpanNode {
      id: string;
      parentId: string | null;
      name: string;
      kind: string;
      startTime: string;
      endTime: string;
      duration: number;
      status: string;
      attributes: unknown;
      events: unknown;
      children: SpanNode[];
      // Calculated fields for waterfall
      relativeStart: number; // ms from trace start
      depth: number;
    }

    type SpanType = (typeof trace.spans)[number];
    const traceStartTime = trace.startTime.getTime();

    function buildSpanTree(span: SpanType, depth: number): SpanNode {
      const children = childMap.get(span.id) || [];
      return {
        id: span.id,
        parentId: span.parentId,
        name: span.name,
        kind: span.kind,
        startTime: span.startTime.toISOString(),
        endTime: span.endTime.toISOString(),
        duration: span.duration,
        status: span.status,
        attributes: span.attributes,
        events: span.events,
        relativeStart: span.startTime.getTime() - traceStartTime,
        depth,
        children: children
          .sort((a, b) => a.startTime.getTime() - b.startTime.getTime())
          .map((c) => buildSpanTree(c, depth + 1)),
      };
    }

    const spanTree = rootSpans
      .sort((a, b) => a.startTime.getTime() - b.startTime.getTime())
      .map((s) => buildSpanTree(s, 0));

    // Flatten tree for timeline view (depth-first)
    const flatSpans: SpanNode[] = [];
    function flattenTree(nodes: SpanNode[]): void {
      for (const node of nodes) {
        flatSpans.push(node);
        flattenTree(node.children);
      }
    }
    flattenTree(spanTree);

    // Calculate statistics
    const errorSpans = trace.spans.filter((s) => s.status === 'error');
    const dbSpans = trace.spans.filter((s) => s.name.startsWith('db.'));
    const httpSpans = trace.spans.filter((s) => s.name.startsWith('HTTP'));

    const stats = {
      totalSpans: trace.spans.length,
      errorCount: errorSpans.length,
      dbSpanCount: dbSpans.length,
      httpSpanCount: httpSpans.length,
      avgSpanDuration: Math.round(
        trace.spans.reduce((sum, s) => sum + s.duration, 0) / trace.spans.length
      ),
      maxSpanDuration: Math.max(...trace.spans.map((s) => s.duration)),
      dbTime: dbSpans.reduce((sum, s) => sum + s.duration, 0),
      httpTime: httpSpans.reduce((sum, s) => sum + s.duration, 0),
    };

    return NextResponse.json({
      trace: {
        id: trace.id,
        name: trace.name,
        serviceName: trace.serviceName,
        startTime: trace.startTime.toISOString(),
        endTime: trace.endTime.toISOString(),
        duration: trace.duration,
        status: trace.status,
        userId: trace.userId,
        requestId: trace.requestId,
      },
      spanTree,
      flatSpans,
      stats,
    });
  } catch (error) {
    logger.error('Trace detail API error', error instanceof Error ? error : new Error(String(error)), { category: 'API', traceId: (await params).id });
    return NextResponse.json(
      { error: 'Internal server error' },
      { status: 500 }
    );
  }
}

// DELETE - Delete a specific trace
export async function DELETE(request: NextRequest, { params }: RouteParams) {
  try {
    const { id } = await params;

    await prisma.trace.delete({
      where: { id },
    });

    return NextResponse.json({ status: 'deleted' });
  } catch (error) {
    logger.error('Trace delete API error', error instanceof Error ? error : new Error(String(error)), { category: 'API', traceId: (await params).id });
    return NextResponse.json(
      { error: 'Internal server error' },
      { status: 500 }
    );
  }
}