79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
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package tools
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import (
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"context"
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"fmt"
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"strings"
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"github.com/mark3labs/mcp-go/mcp"
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"github.com/mark3labs/mcp-go/server"
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"forge.lclr.dev/AI/xdebug-mcp/internal/cache"
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"forge.lclr.dev/AI/xdebug-mcp/internal/cachegrind"
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)
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// AnalyzeTool returns the MCP tool definition for analyze_profile.
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func AnalyzeTool() mcp.Tool {
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return mcp.NewTool("analyze_profile",
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mcp.WithDescription("Analyze an Xdebug cachegrind profiling file. Returns global stats and top N functions sorted by inclusive time cost."),
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mcp.WithString("file_path",
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mcp.Required(),
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mcp.Description("Absolute or relative path to the cachegrind file (.gz or plain text)"),
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),
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mcp.WithNumber("top_n",
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mcp.Description("Number of top functions to return (default: 20)"),
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),
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)
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}
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// AnalyzeHandler returns the MCP handler for analyze_profile.
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func AnalyzeHandler(c *cache.Cache) server.ToolHandlerFunc {
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return func(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
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filePath := req.GetString("file_path", "")
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if filePath == "" {
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return mcp.NewToolResultError("file_path is required"), nil
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}
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topN := req.GetInt("top_n", 20)
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if topN <= 0 {
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topN = 20
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}
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p, err := loadProfile(filePath, c)
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if err != nil {
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return mcp.NewToolResultError(err.Error()), nil
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}
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return mcp.NewToolResultText(Analyze(p, topN)), nil
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}
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}
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// Analyze formats the top-N analysis of p. Exported for testing.
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func Analyze(p *cachegrind.Profile, topN int) string {
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sorted := sortedByTime(p.Functions)
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if topN > len(sorted) {
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topN = len(sorted)
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}
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var sb strings.Builder
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fmt.Fprintf(&sb, "Command: %s\n", p.Cmd)
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fmt.Fprintf(&sb, "Events: %s\n", strings.Join(p.Events, ", "))
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fmt.Fprintf(&sb, "Functions: %d total\n\n", len(p.Functions))
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peak := int64(0)
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if len(sorted) > 0 && len(sorted[0].Costs) > 0 {
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peak = sorted[0].Costs[0]
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}
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if len(p.Events) > 0 {
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fmt.Fprintf(&sb, "Top %d functions by %s:\n", topN, p.Events[0])
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}
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for i, fn := range sorted[:topN] {
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pct := ""
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if peak > 0 && len(fn.Costs) > 0 {
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pct = fmt.Sprintf(" (%.1f%% of peak)", float64(fn.Costs[0])/float64(peak)*100)
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}
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fmt.Fprintf(&sb, " %3d. %-60s %s%s\n", i+1, fn.Name, formatCosts(fn.Costs, p.Events), pct)
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fmt.Fprintf(&sb, " %s\n", fn.File)
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}
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return sb.String()
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}
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