Initial commit (code only without large binaries)

EdgeCommon/pkg/serverconfigs/schedulingconfigs/scheduling_hash.go

@@ -0,0 +1,50 @@
+package schedulingconfigs
+
+import (
+	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs/shared"
+	"github.com/iwind/TeaGo/maps"
+	"github.com/iwind/TeaGo/rands"
+	"hash/crc32"
+)
+
+// HashScheduling Hash调度算法
+type HashScheduling struct {
+	Scheduling
+
+	count int
+}
+
+// Start 启动
+func (this *HashScheduling) Start() {
+	this.count = len(this.Candidates)
+}
+
+// Next 获取下一个候选对象
+func (this *HashScheduling) Next(call *shared.RequestCall) CandidateInterface {
+	if this.count == 0 {
+		return nil
+	}
+
+	if call == nil || call.Options == nil {
+		return this.Candidates[rands.Int(0, this.count-1)]
+	}
+
+	key := call.Options.GetString("key")
+
+	if call.Formatter != nil {
+		key = call.Formatter(key)
+	}
+
+	sum := crc32.ChecksumIEEE([]byte(key))
+	return this.Candidates[sum%uint32(this.count)]
+}
+
+// Summary 获取简要信息
+func (this *HashScheduling) Summary() maps.Map {
+	return maps.Map{
+		"code":        "hash",
+		"name":        "Hash算法",
+		"description": "根据自定义的键值的Hash值分配源站",
+		"networks":    []string{"http"},
+	}
+}