feat: support wasm-assemblyscript sdk (#1175)

plugins/wasm-assemblyscript/assembly/cluster_wrapper.ts

@@ -0,0 +1,214 @@
+import {
+  log,
+  LogLevelValues,
+  get_property,
+  WasmResultValues,
+} from "@higress/proxy-wasm-assemblyscript-sdk/assembly";
+import { getRequestHost } from "./request_wrapper";
+  
+export abstract class Cluster {
+  abstract clusterName(): string;
+  abstract hostName(): string;
+}
+  
+export class RouteCluster extends Cluster {
+  host: string;
+  constructor(host: string = "") {
+    super();
+    this.host = host;
+  }
+  
+  clusterName(): string {
+    let result = get_property("cluster_name");
+    if (result.status != WasmResultValues.Ok) {
+      log(LogLevelValues.error, "get route cluster failed");
+      return "";
+    }
+    return String.UTF8.decode(result.returnValue);
+  }
+  
+  hostName(): string {
+    if (this.host != "") {
+      return this.host;
+    }
+    return getRequestHost();
+  }
+}
+  
+export class K8sCluster extends Cluster {
+  serviceName: string;
+  namespace: string;
+  port: i64;
+  version: string;
+  host: string;
+
+  constructor(
+    serviceName: string,
+    namespace: string,
+    port: i64,
+    version: string = "",
+    host: string = ""
+  ) {
+    super();
+    this.serviceName = serviceName;
+    this.namespace = namespace;
+    this.port = port;
+    this.version = version;
+    this.host = host;
+  }
+
+  clusterName(): string {
+    let namespace = this.namespace != "" ? this.namespace : "default";
+    return `outbound|${this.port}|${this.version}|${this.serviceName}.${namespace}.svc.cluster.local`;
+  }
+
+  hostName(): string {
+    if (this.host != "") {
+      return this.host;
+    }
+    return `${this.serviceName}.${this.namespace}.svc.cluster.local`;
+  }
+}
+
+export class NacosCluster extends Cluster {
+  serviceName: string;
+  group: string;
+  namespaceID: string;
+  port: i64;
+  isExtRegistry: boolean;
+  version: string;
+  host: string;
+
+  constructor(
+    serviceName: string,
+    namespaceID: string,
+    port: i64,
+    // use DEFAULT-GROUP by default
+    group: string = "DEFAULT-GROUP",
+    // set true if use edas/sae registry
+    isExtRegistry: boolean = false,
+    version: string = "",
+    host: string = ""
+  ) {
+    super();
+    this.serviceName = serviceName;
+    this.group = group.replace("_", "-");
+    this.namespaceID = namespaceID;
+    this.port = port;
+    this.isExtRegistry = isExtRegistry;
+    this.version = version;
+    this.host = host;
+  }
+
+  clusterName(): string {
+    let tail = "nacos" + (this.isExtRegistry ? "-ext" : "");
+    return `outbound|${this.port}|${this.version}|${this.serviceName}.${this.group}.${this.namespaceID}.${tail}`;
+  }
+
+  hostName(): string {
+    if (this.host != "") {
+      return this.host;
+    }
+    return this.serviceName;
+  }
+}
+
+export class StaticIpCluster extends Cluster {
+  serviceName: string;
+  port: i64;
+  host: string;
+
+  constructor(serviceName: string, port: i64, host: string = "") {
+    super()
+    this.serviceName = serviceName;
+    this.port = port;
+    this.host = host;
+  }
+
+  clusterName(): string {
+    return `outbound|${this.port}||${this.serviceName}.static`;
+  }
+
+  hostName(): string {
+    if (this.host != "") {
+      return this.host;
+    }
+    return this.serviceName;
+  }
+}
+
+export class DnsCluster extends Cluster {
+  serviceName: string;
+  domain: string;
+  port: i64;
+
+  constructor(serviceName: string, domain: string, port: i64) {
+    super();
+    this.serviceName = serviceName;
+    this.domain = domain;
+    this.port = port;
+  }
+
+  clusterName(): string {
+    return `outbound|${this.port}||${this.serviceName}.dns`;
+  }
+
+  hostName(): string {
+    return this.domain;
+  }
+}
+
+export class ConsulCluster extends Cluster {
+  serviceName: string;
+  datacenter: string;
+  port: i64;
+  host: string;
+
+  constructor(
+    serviceName: string,
+    datacenter: string,
+    port: i64,
+    host: string = ""
+  ) {
+    super();
+    this.serviceName = serviceName;
+    this.datacenter = datacenter;
+    this.port = port;
+    this.host = host;
+  }
+
+  clusterName(): string {
+    return `outbound|${this.port}||${this.serviceName}.${this.datacenter}.consul`;
+  }
+
+  hostName(): string {
+    if (this.host != "") {
+      return this.host;
+    }
+    return this.serviceName;
+  }
+}
+
+export class FQDNCluster extends Cluster {
+  fqdn: string;
+  host: string;
+  port: i64;
+
+  constructor(fqdn: string, port: i64, host: string = "") {
+    super();
+    this.fqdn = fqdn;
+    this.host = host;
+    this.port = port;
+  }
+
+  clusterName(): string {
+    return `outbound|${this.port}||${this.fqdn}`;
+  }
+
+  hostName(): string {
+    if (this.host != "") {
+      return this.host;
+    }
+    return this.fqdn;
+  }
+}