feat: add fields - raftAppliedIndex , errorsList, dbSizeInUse and isLearner in StatusResponse

jetcd-core/src/main/java/io/etcd/jetcd/maintenance/StatusResponse.java

@@ -16,6 +16,8 @@
 
 package io.etcd.jetcd.maintenance;
 
+import java.util.List;
+
 import io.etcd.jetcd.Maintenance;
 import io.etcd.jetcd.impl.AbstractResponse;
 
@@ -73,4 +75,40 @@ public long getRaftIndex() {
     public long getRaftTerm() {
         return getResponse().getRaftTerm();
     }
+
+    /**
+     * Returns the current raft applied index of the responding member.
+     *
+     * @return the raft applied index.
+     */
+    public long getRaftAppliedIndex() {
+        return getResponse().getRaftAppliedIndex();
+    }
+
+    /**
+     * Return the information corresponding to the alarms, health and status.
+     *
+     * @return the list of errors
+     */
+    public List<String> getErrorList() {
+        return getResponse().getErrorsList();
+    }
+
+    /**
+     * Returns the size of the backend database logically in use, in bytes, of the responding member.
+     *
+     * @return dbSizeInUse
+     */
+    public long getDbSizeInUse() {
+        return getResponse().getDbSizeInUse();
+    }
+
+    /**
+     * Returns if the member is a raft learner.
+     *
+     * @return if the member is a raft learner
+     */
+    public boolean isLearner() {
+        return getResponse().getIsLearner();
+    }
 }

jetcd-core/src/main/proto/rpc.proto

@@ -725,6 +725,14 @@ message StatusResponse {
   uint64 raftIndex = 5;
   // raftTerm is the current raft term of the responding member.
   uint64 raftTerm = 6;
+  // raftAppliedIndex is the current raft applied index of the responding member.
+  uint64 raftAppliedIndex = 7;
+  // errors contains alarm/health information and status.
+  repeated string errors = 8;
+  // dbSizeInUse is the size of the backend database logically in use, in bytes, of the responding member.
+  int64 dbSizeInUse = 9;
+  // isLearner indicates if the member is raft learner.
+  bool isLearner = 10;
 }
 
 message AuthEnableRequest {

jetcd-core/src/test/java/io/etcd/jetcd/impl/MaintenanceTest.java

@@ -72,6 +72,15 @@ public void setUp() {
     public void testStatusMember() throws ExecutionException, InterruptedException {
         StatusResponse statusResponse = maintenance.statusMember(endpoints.get(0)).get();
         assertThat(statusResponse.getDbSize()).isGreaterThan(0);
+        assertThat(statusResponse.getRaftIndex()).isGreaterThan(0);
+        assertThat(statusResponse.getRaftAppliedIndex())
+            .isGreaterThan(0)
+            .isLessThanOrEqualTo(statusResponse.getRaftIndex());
+        assertThat(statusResponse.getDbSizeInUse())
+            .isGreaterThan(0)
+            .isLessThanOrEqualTo(statusResponse.getDbSize());
+        assertThat(statusResponse.isLearner()).isFalse();
+        assertThat(statusResponse.getErrorList().size()).isEqualTo(0);
     }
 
     @Test

jetcd-grpc/src/main/proto/rpc.proto

@@ -725,6 +725,14 @@ message StatusResponse {
   uint64 raftIndex = 5;
   // raftTerm is the current raft term of the responding member.
   uint64 raftTerm = 6;
+  // raftAppliedIndex is the current raft applied index of the responding member.
+  uint64 raftAppliedIndex = 7;
+  // errors contains alarm/health information and status.
+  repeated string errors = 8;
+  // dbSizeInUse is the size of the backend database logically in use, in bytes, of the responding member.
+  int64 dbSizeInUse = 9;
+  // isLearner indicates if the member is raft learner.
+  bool isLearner = 10;
 }
 
 message AuthEnableRequest {