test checking ec distribution

weed/shell/command_ec_encode_test.go

@@ -0,0 +1,30 @@
+package shell
+
+import (
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
+	"testing"
+)
+
+func TestEcDistribution(t *testing.T) {
+
+	topologyInfo := parseOutput(topoData)
+
+	// find out all volume servers with one slot left.
+	ecNodes, totalFreeEcSlots := collectEcVolumeServersByDc(topologyInfo, "")
+
+	sortEcNodesByFreeslotsDecending(ecNodes)
+
+	if totalFreeEcSlots < erasure_coding.TotalShardsCount {
+		println("not enough free ec shard slots", totalFreeEcSlots)
+	}
+	allocatedDataNodes := ecNodes
+	if len(allocatedDataNodes) > erasure_coding.TotalShardsCount {
+		allocatedDataNodes = allocatedDataNodes[:erasure_coding.TotalShardsCount]
+	}
+
+	for _, dn := range allocatedDataNodes {
+		fmt.Printf("info %+v %+v\n", dn.info, dn)
+	}
+
+}