Admin UI: Fetch task logs (#7114)

* show task details

* loading tasks

* task UI works

* generic rendering

* rendering the export link

* removing placementConflicts from task parameters

* remove TaskSourceLocation

* remove "Server ID" column

* rendering balance task source

* sources and targets

* fix ec task generation

* move info

* render timeline

* simplified worker id

* simplify

* read task logs from worker

* isValidTaskID

* address comments

* Update weed/worker/tasks/balance/execution.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/worker/tasks/erasure_coding/ec_task.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/worker/tasks/task_log_handler.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* fix shard ids

* plan distributing shard id

* rendering planned shards in task details

* remove Conflicts

* worker logs correctly

* pass in dc and rack

* task logging

* Update weed/admin/maintenance/maintenance_queue.go

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

* display log details

* logs have fields now

* sort field keys

* fix link

* fix collection filtering

* avoid hard coded ec shard counts

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

weed/worker/tasks/vacuum/detection.go

@@ -47,7 +47,7 @@ func Detection(metrics []*types.VolumeHealthMetrics, clusterInfo *types.ClusterI
 			}
 
 			// Create typed parameters for vacuum task
-			result.TypedParams = createVacuumTaskParams(result, metric, vacuumConfig)
+			result.TypedParams = createVacuumTaskParams(result, metric, vacuumConfig, clusterInfo)
 			results = append(results, result)
 		} else {
 			// Debug why volume was not selected
@@ -85,7 +85,7 @@ func Detection(metrics []*types.VolumeHealthMetrics, clusterInfo *types.ClusterI
 
 // createVacuumTaskParams creates typed parameters for vacuum tasks
 // This function is moved from MaintenanceIntegration.createVacuumTaskParams to the detection logic
-func createVacuumTaskParams(task *types.TaskDetectionResult, metric *types.VolumeHealthMetrics, vacuumConfig *Config) *worker_pb.TaskParams {
+func createVacuumTaskParams(task *types.TaskDetectionResult, metric *types.VolumeHealthMetrics, vacuumConfig *Config, clusterInfo *types.ClusterInfo) *worker_pb.TaskParams {
 	// Use configured values or defaults
 	garbageThreshold := 0.3                    // Default 30%
 	verifyChecksum := true                     // Default to verify
@@ -99,13 +99,27 @@ func createVacuumTaskParams(task *types.TaskDetectionResult, metric *types.Volum
 		// to the protobuf definition if they should be configurable
 	}
 
-	// Create typed protobuf parameters
+	// Use DC and rack information directly from VolumeHealthMetrics
+	sourceDC, sourceRack := metric.DataCenter, metric.Rack
+
+	// Create typed protobuf parameters with unified sources
 	return &worker_pb.TaskParams{
 		TaskId:     task.TaskID, // Link to ActiveTopology pending task (if integrated)
 		VolumeId:   task.VolumeID,
-		Server:     task.Server,
 		Collection: task.Collection,
 		VolumeSize: metric.Size, // Store original volume size for tracking changes
+
+		// Unified sources array
+		Sources: []*worker_pb.TaskSource{
+			{
+				Node:          task.Server,
+				VolumeId:      task.VolumeID,
+				EstimatedSize: metric.Size,
+				DataCenter:    sourceDC,
+				Rack:          sourceRack,
+			},
+		},
+
 		TaskParams: &worker_pb.TaskParams_VacuumParams{
 			VacuumParams: &worker_pb.VacuumTaskParams{
 				GarbageThreshold: garbageThreshold,

weed/worker/tasks/vacuum/register.go

@@ -42,9 +42,12 @@ func RegisterVacuumTask() {
 			if params == nil {
 				return nil, fmt.Errorf("task parameters are required")
 			}
+			if len(params.Sources) == 0 {
+				return nil, fmt.Errorf("at least one source is required for vacuum task")
+			}
 			return NewVacuumTask(
 				fmt.Sprintf("vacuum-%d", params.VolumeId),
-				params.Server,
+				params.Sources[0].Node, // Use first source node
 				params.VolumeId,
 				params.Collection,
 			), nil

weed/worker/tasks/vacuum/vacuum_task.go

@@ -114,8 +114,16 @@ func (t *VacuumTask) Validate(params *worker_pb.TaskParams) error {
 		return fmt.Errorf("volume ID mismatch: expected %d, got %d", t.volumeID, params.VolumeId)
 	}
 
-	if params.Server != t.server {
-		return fmt.Errorf("source server mismatch: expected %s, got %s", t.server, params.Server)
+	// Validate that at least one source matches our server
+	found := false
+	for _, source := range params.Sources {
+		if source.Node == t.server {
+			found = true
+			break
+		}
+	}
+	if !found {
+		return fmt.Errorf("no source matches expected server %s", t.server)
 	}
 
 	if vacuumParams.GarbageThreshold < 0 || vacuumParams.GarbageThreshold > 1.0 {