tao.chenandClaude
c4ac3cc354
- internal/rm/client.go: YARN RM 客户端 - ListApps / GetApp / KillApp / GetLogs - GetLogs 降级链数据驱动 (amContainerLogs → aggregated-logs → logs) - 跨主机 redirect 保留 Authorization (URLAllowlist 兜底) - 4 Tool: list_applications / get_application_status / get_application_logs / kill_application - mcp.WithEnum(state) 约束 YARN app 状态 - tool handler 永远 (result, nil), 业务错误用 NewToolResultError - deps.go: +HTTPClient + MaxResponseBytes - main.go: 注入 httpclient.Client - 端到端实测: mock RM 验证 4 Tool + 降级链 + 错误路径 Co-Authored-By: Claude <noreply@anthropic.com>
70 lines
2.0 KiB
Go
70 lines
2.0 KiB
Go
package tools
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import (
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"context"
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"github.com/mark3labs/mcp-go/mcp"
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"spark-mcp-go/internal/rm"
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)
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const ListApplicationsName = "list_applications"
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// NewListApplicationsTool returns the schema for the list_applications MCP Tool.
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func NewListApplicationsTool() mcp.Tool {
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return mcp.NewTool(ListApplicationsName,
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mcp.WithDescription("List YARN applications from a cluster's ResourceManager. Returns the raw RM JSON response so the agent can inspect app IDs, states, and owners."),
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mcp.WithString("cluster_id",
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mcp.Required(),
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mcp.Description("ID of the configured cluster (from list_clusters)"),
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),
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mcp.WithString("state",
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mcp.Description("Filter by application state. YARN accepts comma-separated states; common values: NEW, NEW_SAVING, SUBMITTED, ACCEPTED, RUNNING, FINISHED, FAILED, KILLED."),
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),
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mcp.WithString("user",
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mcp.Description("Filter by submitting user."),
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),
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)
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}
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// ListApplicationsHandler queries the ResourceManager for applications.
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func (d *Deps) ListApplicationsHandler(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
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clusterID, err := req.RequireString("cluster_id")
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if err != nil {
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return errResult("list_applications: " + err.Error()), nil
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}
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args := req.GetArguments()
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state := ""
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if v, ok := args["state"].(string); ok {
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state = v
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}
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user := ""
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if v, ok := args["user"].(string); ok {
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user = v
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}
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callLog := startToolCall(ctx, d.Logger, ListApplicationsName, map[string]any{
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"cluster_id": clusterID,
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"state": state,
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"user": user,
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})
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defer callLog.End()
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cl, err := d.ClusterRepo.Get(ctx, clusterID)
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if err != nil {
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callLog.WithError(err)
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return errResult("list_applications: cluster " + clusterID + ": " + err.Error()), nil
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}
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rmc := rm.New(d.HTTPClient, cl)
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raw, err := rmc.ListApps(ctx, state, user)
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if err != nil {
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callLog.WithError(err)
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return errResult("list_applications: " + err.Error()), nil
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}
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callLog.WithResult(map[string]any{"bytes": len(raw)})
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return textResult(string(raw)), nil
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}
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