Add SameAuthParams lookup auto failover

include/pulsar/ClientConfiguration.h

@@ -367,6 +367,7 @@ class PULSAR_PUBLIC ClientConfiguration {
 
     friend class ClientImpl;
     friend class PulsarWrapper;
+    friend class SameAuthParamsLookupAutoClusterFailover;
 
    private:
     const AuthenticationPtr& getAuthPtr() const;

include/pulsar/SameAuthParamsLookupAutoClusterFailover.h

@@ -0,0 +1,85 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+#ifndef PULSAR_SAME_AUTH_PARAMS_LOOKUP_AUTO_CLUSTER_FAILOVER_H_
+#define PULSAR_SAME_AUTH_PARAMS_LOOKUP_AUTO_CLUSTER_FAILOVER_H_
+
+#include <pulsar/ClientConfiguration.h>
+#include <pulsar/ServiceInfoProvider.h>
+
+#include <chrono>
+#include <cstdint>
+#include <functional>
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace pulsar {
+
+class SameAuthParamsLookupAutoClusterFailoverImpl;
+
+class PULSAR_PUBLIC SameAuthParamsLookupAutoClusterFailover final : public ServiceInfoProvider {
+   public:
+    struct Config {
+        std::vector<std::string> serviceUrls;
+        ClientConfiguration clientConfiguration;
+        uint32_t failoverThreshold{5};
+        uint32_t recoverThreshold{5};
+        std::chrono::milliseconds checkHealthyInterval{1000};
+        bool markTopicNotFoundAsAvailable{true};
+        std::string testTopic{"public/default/tp_test"};
+
+        Config(std::vector<std::string> serviceUrls, ClientConfiguration clientConfiguration = {});
+    };
+
+    class Builder {
+       public:
+        explicit Builder(std::vector<std::string> serviceUrls, ClientConfiguration clientConfiguration = {});
+
+        Builder& withFailoverThreshold(uint32_t threshold);
+        Builder& withRecoverThreshold(uint32_t threshold);
+        Builder& withCheckHealthyInterval(std::chrono::milliseconds interval);
+        Builder& withMarkTopicNotFoundAsAvailable(bool enabled);
+        Builder& withTestTopic(std::string testTopic);
+
+        SameAuthParamsLookupAutoClusterFailover build();
+
+       private:
+        Config config_;
+    };
+
+    explicit SameAuthParamsLookupAutoClusterFailover(Config&& config);
+
+    ~SameAuthParamsLookupAutoClusterFailover() final;
+
+    ServiceInfo initialServiceInfo() final;
+
+    void initialize(std::function<void(ServiceInfo)> onServiceInfoUpdate) final;
+
+   private:
+    friend class SameAuthParamsLookupAutoClusterFailoverImpl;
+
+    static ServiceInfo toServiceInfo(const ClientConfiguration& clientConfiguration,
+                                     const std::string& serviceUrl);
+
+    std::shared_ptr<SameAuthParamsLookupAutoClusterFailoverImpl> impl_;
+};
+
+}  // namespace pulsar
+
+#endif