1 files changed, 79 insertions, 0 deletions
diff --git a/weed/worker/tasks/erasure_coding/ec.go b/weed/worker/tasks/erasure_coding/ec.go
new file mode 100644
index 000000000..641dfc6b5
--- /dev/null
+++ b/weed/worker/tasks/erasure_coding/ec.go
@@ -0,0 +1,79 @@
+package erasure_coding
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/weed/glog"
+	"github.com/seaweedfs/seaweedfs/weed/worker/tasks"
+	"github.com/seaweedfs/seaweedfs/weed/worker/types"
+)
+
+// Task implements erasure coding operation to convert volumes to EC format
+type Task struct {
+	*tasks.BaseTask
+	server   string
+	volumeID uint32
+}
+
+// NewTask creates a new erasure coding task instance
+func NewTask(server string, volumeID uint32) *Task {
+	task := &Task{
+		BaseTask: tasks.NewBaseTask(types.TaskTypeErasureCoding),
+		server:   server,
+		volumeID: volumeID,
+	}
+	return task
+}
+
+// Execute executes the erasure coding task
+func (t *Task) Execute(params types.TaskParams) error {
+	glog.Infof("Starting erasure coding task for volume %d on server %s", t.volumeID, t.server)
+
+	// Simulate erasure coding operation with progress updates
+	steps := []struct {
+		name     string
+		duration time.Duration
+		progress float64
+	}{
+		{"Analyzing volume", 2 * time.Second, 15},
+		{"Creating EC shards", 5 * time.Second, 50},
+		{"Verifying shards", 2 * time.Second, 75},
+		{"Finalizing EC volume", 1 * time.Second, 100},
+	}
+
+	for _, step := range steps {
+		if t.IsCancelled() {
+			return fmt.Errorf("erasure coding task cancelled")
+		}
+
+		glog.V(1).Infof("Erasure coding task step: %s", step.name)
+		t.SetProgress(step.progress)
+
+		// Simulate work
+		time.Sleep(step.duration)
+	}
+
+	glog.Infof("Erasure coding task completed for volume %d on server %s", t.volumeID, t.server)
+	return nil
+}
+
+// Validate validates the task parameters
+func (t *Task) Validate(params types.TaskParams) error {
+	if params.VolumeID == 0 {
+		return fmt.Errorf("volume_id is required")
+	}
+	if params.Server == "" {
+		return fmt.Errorf("server is required")
+	}
+	return nil
+}
+
+// EstimateTime estimates the time needed for the task
+func (t *Task) EstimateTime(params types.TaskParams) time.Duration {
+	// Base time for erasure coding operation
+	baseTime := 30 * time.Second
+
+	// Could adjust based on volume size or other factors
+	return baseTime
+}