Admin: misc improvements on admin server and workers. EC now works. (#7055)

* initial design

* added simulation as tests

* reorganized the codebase to move the simulation framework and tests into their own dedicated package

* integration test. ec worker task

* remove "enhanced" reference

* start master, volume servers, filer

Current Status
✅ Master: Healthy and running (port 9333)
✅ Filer: Healthy and running (port 8888)
✅ Volume Servers: All 6 servers running (ports 8080-8085)
🔄 Admin/Workers: Will start when dependencies are ready

* generate write load

* tasks are assigned

* admin start wtih grpc port. worker has its own working directory

* Update .gitignore

* working worker and admin. Task detection is not working yet.

* compiles, detection uses volumeSizeLimitMB from master

* compiles

* worker retries connecting to admin

* build and restart

* rendering pending tasks

* skip task ID column

* sticky worker id

* test canScheduleTaskNow

* worker reconnect to admin

* clean up logs

* worker register itself first

* worker can run ec work and report status

but:
1. one volume should not be repeatedly worked on.
2. ec shards needs to be distributed and source data should be deleted.

* move ec task logic

* listing ec shards

* local copy, ec. Need to distribute.

* ec is mostly working now

* distribution of ec shards needs improvement
* need configuration to enable ec

* show ec volumes

* interval field UI component

* rename

* integration test with vauuming

* garbage percentage threshold

* fix warning

* display ec shard sizes

* fix ec volumes list

* Update ui.go

* show default values

* ensure correct default value

* MaintenanceConfig use ConfigField

* use schema defined defaults

* config

* reduce duplication

* refactor to use BaseUIProvider

* each task register its schema

* checkECEncodingCandidate use ecDetector

* use vacuumDetector

* use volumeSizeLimitMB

* remove

remove

* remove unused

* refactor

* use new framework

* remove v2 reference

* refactor

* left menu can scroll now

* The maintenance manager was not being initialized when no data directory was configured for persistent storage.

* saving config

* Update task_config_schema_templ.go

* enable/disable tasks

* protobuf encoded task configurations

* fix system settings

* use ui component

* remove logs

* interface{} Reduction

* reduce interface{}

* reduce interface{}

* avoid from/to map

* reduce interface{}

* refactor

* keep it DRY

* added logging

* debug messages

* debug level

* debug

* show the log caller line

* use configured task policy

* log level

* handle admin heartbeat response

* Update worker.go

* fix EC rack and dc count

* Report task status to admin server

* fix task logging, simplify interface checking, use erasure_coding constants

* factor in empty volume server during task planning

* volume.list adds disk id

* track disk id also

* fix locking scheduled and manual scanning

* add active topology

* simplify task detector

* ec task completed, but shards are not showing up

* implement ec in ec_typed.go

* adjust log level

* dedup

* implementing ec copying shards and only ecx files

* use disk id when distributing ec shards

🎯 Planning: ActiveTopology creates DestinationPlan with specific TargetDisk
📦 Task Creation: maintenance_integration.go creates ECDestination with DiskId
🚀 Task Execution: EC task passes DiskId in VolumeEcShardsCopyRequest
💾 Volume Server: Receives disk_id and stores shards on specific disk (vs.store.Locations[req.DiskId])
📂 File System: EC shards and metadata land in the exact disk directory planned

* Delete original volume from all locations

* clean up existing shard locations

* local encoding and distributing

* Update docker/admin_integration/EC-TESTING-README.md

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

* check volume id range

* simplify

* fix tests

* fix types

* clean up logs and tests

---------

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

1 files changed, 129 insertions, 0 deletions

diff --git a/weed/worker/tasks/base/generic_components.go b/weed/worker/tasks/base/generic_components.go
new file mode 100644
index 000000000..27ad1bb29
--- /dev/null
+++ b/weed/worker/tasks/base/generic_components.go
@@ -0,0 +1,129 @@
+package base
+
+import (
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/weed/worker/types"
+)
+
+// GenericDetector implements TaskDetector using function-based logic
+type GenericDetector struct {
+	taskDef *TaskDefinition
+}
+
+// NewGenericDetector creates a detector from a task definition
+func NewGenericDetector(taskDef *TaskDefinition) *GenericDetector {
+	return &GenericDetector{taskDef: taskDef}
+}
+
+// GetTaskType returns the task type
+func (d *GenericDetector) GetTaskType() types.TaskType {
+	return d.taskDef.Type
+}
+
+// ScanForTasks scans using the task definition's detection function
+func (d *GenericDetector) ScanForTasks(volumeMetrics []*types.VolumeHealthMetrics, clusterInfo *types.ClusterInfo) ([]*types.TaskDetectionResult, error) {
+	if d.taskDef.DetectionFunc == nil {
+		return nil, nil
+	}
+	return d.taskDef.DetectionFunc(volumeMetrics, clusterInfo, d.taskDef.Config)
+}
+
+// ScanInterval returns the scan interval from task definition
+func (d *GenericDetector) ScanInterval() time.Duration {
+	if d.taskDef.ScanInterval > 0 {
+		return d.taskDef.ScanInterval
+	}
+	return 30 * time.Minute // Default
+}
+
+// IsEnabled returns whether this detector is enabled
+func (d *GenericDetector) IsEnabled() bool {
+	return d.taskDef.Config.IsEnabled()
+}
+
+// GenericScheduler implements TaskScheduler using function-based logic
+type GenericScheduler struct {
+	taskDef *TaskDefinition
+}
+
+// NewGenericScheduler creates a scheduler from a task definition
+func NewGenericScheduler(taskDef *TaskDefinition) *GenericScheduler {
+	return &GenericScheduler{taskDef: taskDef}
+}
+
+// GetTaskType returns the task type
+func (s *GenericScheduler) GetTaskType() types.TaskType {
+	return s.taskDef.Type
+}
+
+// CanScheduleNow determines if a task can be scheduled using the task definition's function
+func (s *GenericScheduler) CanScheduleNow(task *types.Task, runningTasks []*types.Task, availableWorkers []*types.Worker) bool {
+	if s.taskDef.SchedulingFunc == nil {
+		return s.defaultCanSchedule(task, runningTasks, availableWorkers)
+	}
+	return s.taskDef.SchedulingFunc(task, runningTasks, availableWorkers, s.taskDef.Config)
+}
+
+// defaultCanSchedule provides default scheduling logic
+func (s *GenericScheduler) defaultCanSchedule(task *types.Task, runningTasks []*types.Task, availableWorkers []*types.Worker) bool {
+	if !s.taskDef.Config.IsEnabled() {
+		return false
+	}
+
+	// Count running tasks of this type
+	runningCount := 0
+	for _, runningTask := range runningTasks {
+		if runningTask.Type == s.taskDef.Type {
+			runningCount++
+		}
+	}
+
+	// Check concurrency limit
+	maxConcurrent := s.taskDef.MaxConcurrent
+	if maxConcurrent <= 0 {
+		maxConcurrent = 1 // Default
+	}
+	if runningCount >= maxConcurrent {
+		return false
+	}
+
+	// Check if we have available workers
+	for _, worker := range availableWorkers {
+		if worker.CurrentLoad < worker.MaxConcurrent {
+			for _, capability := range worker.Capabilities {
+				if capability == s.taskDef.Type {
+					return true
+				}
+			}
+		}
+	}
+
+	return false
+}
+
+// GetPriority returns the priority for this task
+func (s *GenericScheduler) GetPriority(task *types.Task) types.TaskPriority {
+	return task.Priority
+}
+
+// GetMaxConcurrent returns max concurrent tasks
+func (s *GenericScheduler) GetMaxConcurrent() int {
+	if s.taskDef.MaxConcurrent > 0 {
+		return s.taskDef.MaxConcurrent
+	}
+	return 1 // Default
+}
+
+// GetDefaultRepeatInterval returns the default repeat interval
+func (s *GenericScheduler) GetDefaultRepeatInterval() time.Duration {
+	if s.taskDef.RepeatInterval > 0 {
+		return s.taskDef.RepeatInterval
+	}
+	return 24 * time.Hour // Default
+}
+
+// IsEnabled returns whether this scheduler is enabled
+func (s *GenericScheduler) IsEnabled() bool {
+	return s.taskDef.Config.IsEnabled()
+}