Add Statement

spark/build.gradle

@@ -119,8 +119,9 @@ jacocoTestCoverageVerification {
                     'org.opensearch.sql.spark.dispatcher.model.*',
                     'org.opensearch.sql.spark.flint.FlintIndexType',
                     // ignore because XContext IOException
-                    'org.opensearch.sql.spark.execution.statestore.SessionStateStore',
-                    'org.opensearch.sql.spark.execution.session.SessionModel'
+                    'org.opensearch.sql.spark.execution.statestore.StateStore',
+                    'org.opensearch.sql.spark.execution.session.SessionModel',
+                    'org.opensearch.sql.spark.execution.statement.StatementModel'
             ]
             limit {
                 counter = 'LINE'

spark/src/main/java/org/opensearch/sql/spark/execution/session/InteractiveSession.java

@@ -6,6 +6,10 @@
 package org.opensearch.sql.spark.execution.session;
 
 import static org.opensearch.sql.spark.execution.session.SessionModel.initInteractiveSession;
+import static org.opensearch.sql.spark.execution.session.SessionState.END_STATE;
+import static org.opensearch.sql.spark.execution.statement.StatementId.newStatementId;
+import static org.opensearch.sql.spark.execution.statestore.StateStore.createSession;
+import static org.opensearch.sql.spark.execution.statestore.StateStore.getSession;
 
 import java.util.Optional;
 import lombok.Builder;
@@ -14,7 +18,11 @@
 import org.apache.logging.log4j.Logger;
 import org.opensearch.index.engine.VersionConflictEngineException;
 import org.opensearch.sql.spark.client.EMRServerlessClient;
-import org.opensearch.sql.spark.execution.statestore.SessionStateStore;
+import org.opensearch.sql.spark.execution.statement.QueryRequest;
+import org.opensearch.sql.spark.execution.statement.Statement;
+import org.opensearch.sql.spark.execution.statement.StatementId;
+import org.opensearch.sql.spark.execution.statestore.StateStore;
+import org.opensearch.sql.spark.rest.model.LangType;
 
 /**
  * Interactive session.
@@ -27,9 +35,8 @@ public class InteractiveSession implements Session {
   private static final Logger LOG = LogManager.getLogger();
 
   private final SessionId sessionId;
-  private final SessionStateStore sessionStateStore;
+  private final StateStore stateStore;
   private final EMRServerlessClient serverlessClient;
-
   private SessionModel sessionModel;
 
   @Override
@@ -41,21 +48,75 @@ public void open(CreateSessionRequest createSessionRequest) {
       sessionModel =
           initInteractiveSession(
               applicationId, jobID, sessionId, createSessionRequest.getDatasourceName());
-      sessionStateStore.create(sessionModel);
+      createSession(stateStore).apply(sessionModel);
     } catch (VersionConflictEngineException e) {
       String errorMsg = "session already exist. " + sessionId;
       LOG.error(errorMsg);
       throw new IllegalStateException(errorMsg);
     }
   }
 
+  /** todo. StatementSweeper will delete doc. */
   @Override
   public void close() {
-    Optional<SessionModel> model = sessionStateStore.get(sessionModel.getSessionId());
+    Optional<SessionModel> model = getSession(stateStore).apply(sessionModel.getId());
     if (model.isEmpty()) {
-      throw new IllegalStateException("session not exist. " + sessionModel.getSessionId());
+      throw new IllegalStateException("session does not exist. " + sessionModel.getSessionId());
     } else {
       serverlessClient.cancelJobRun(sessionModel.getApplicationId(), sessionModel.getJobId());
     }
   }
+
+  /** Submit statement. If submit successfully, Statement in waiting state. */
+  public StatementId submit(QueryRequest request) {
+    Optional<SessionModel> model = getSession(stateStore).apply(sessionModel.getId());
+    if (model.isEmpty()) {
+      throw new IllegalStateException("session does not exist. " + sessionModel.getSessionId());
+    } else {
+      sessionModel = model.get();
+      if (!END_STATE.contains(sessionModel.getSessionState())) {
+        StatementId statementId = newStatementId();
+        Statement st =
+            Statement.builder()
+                .sessionId(sessionId)
+                .applicationId(sessionModel.getApplicationId())
+                .jobId(sessionModel.getJobId())
+                .stateStore(stateStore)
+                .statementId(statementId)
+                .langType(LangType.SQL)
+                .query(request.getQuery())
+                .queryId(statementId.getId())
+                .build();
+        st.open();
+        return statementId;
+      } else {
+        String errMsg =
+            String.format(
+                "can't submit statement, session should not be in end state, "
+                    + "current session state is: %s",
+                sessionModel.getSessionState().getSessionState());
+        LOG.debug(errMsg);
+        throw new IllegalStateException(errMsg);
+      }
+    }
+  }
+
+  @Override
+  public Optional<Statement> get(StatementId stID) {
+    return StateStore.getStatement(stateStore)
+        .apply(stID.getId())
+        .map(
+            model ->
+                Statement.builder()
+                    .sessionId(sessionId)
+                    .applicationId(model.getApplicationId())
+                    .jobId(model.getJobId())
+                    .statementId(model.getStatementId())
+                    .langType(model.getLangType())
+                    .query(model.getQuery())
+                    .queryId(model.getQueryId())
+                    .stateStore(stateStore)
+                    .statementModel(model)
+                    .build());
+  }
 }

spark/src/main/java/org/opensearch/sql/spark/execution/session/Session.java

@@ -5,6 +5,11 @@
 
 package org.opensearch.sql.spark.execution.session;
 
+import java.util.Optional;
+import org.opensearch.sql.spark.execution.statement.QueryRequest;
+import org.opensearch.sql.spark.execution.statement.Statement;
+import org.opensearch.sql.spark.execution.statement.StatementId;
+
 /** Session define the statement execution context. Each session is binding to one Spark Job. */
 public interface Session {
   /** open session. */
@@ -13,6 +18,22 @@ public interface Session {
   /** close session. */
   void close();
 
+  /**
+   * submit {@link QueryRequest}.
+   *
+   * @param request {@link QueryRequest}
+   * @return {@link StatementId}
+   */
+  StatementId submit(QueryRequest request);
+
+  /**
+   * get {@link Statement}.
+   *
+   * @param stID {@link StatementId}
+   * @return {@link Statement}
+   */
+  Optional<Statement> get(StatementId stID);
+
   SessionModel getSessionModel();
 
   SessionId getSessionId();

spark/src/main/java/org/opensearch/sql/spark/execution/session/SessionManager.java

@@ -10,7 +10,7 @@
 import java.util.Optional;
 import lombok.RequiredArgsConstructor;
 import org.opensearch.sql.spark.client.EMRServerlessClient;
-import org.opensearch.sql.spark.execution.statestore.SessionStateStore;
+import org.opensearch.sql.spark.execution.statestore.StateStore;
 
 /**
  * Singleton Class
@@ -19,27 +19,27 @@
  */
 @RequiredArgsConstructor
 public class SessionManager {
-  private final SessionStateStore stateStore;
+  private final StateStore stateStore;
   private final EMRServerlessClient emrServerlessClient;
 
   public Session createSession(CreateSessionRequest request) {
     InteractiveSession session =
         InteractiveSession.builder()
             .sessionId(newSessionId())
-            .sessionStateStore(stateStore)
+            .stateStore(stateStore)
             .serverlessClient(emrServerlessClient)
             .build();
     session.open(request);
     return session;
   }
 
   public Optional<Session> getSession(SessionId sid) {
-    Optional<SessionModel> model = stateStore.get(sid);
+    Optional<SessionModel> model = StateStore.getSession(stateStore).apply(sid.getSessionId());
     if (model.isPresent()) {
       InteractiveSession session =
           InteractiveSession.builder()
               .sessionId(sid)
-              .sessionStateStore(stateStore)
+              .stateStore(stateStore)
               .serverlessClient(emrServerlessClient)
               .sessionModel(model.get())
               .build();

spark/src/main/java/org/opensearch/sql/spark/execution/session/SessionModel.java

@@ -12,16 +12,16 @@
 import lombok.Builder;
 import lombok.Data;
 import lombok.SneakyThrows;
-import org.opensearch.core.xcontent.ToXContentObject;
 import org.opensearch.core.xcontent.XContentBuilder;
 import org.opensearch.core.xcontent.XContentParser;
 import org.opensearch.core.xcontent.XContentParserUtils;
 import org.opensearch.index.seqno.SequenceNumbers;
+import org.opensearch.sql.spark.execution.statestore.StateModel;
 
 /** Session data in flint.ql.sessions index. */
 @Data
 @Builder
-public class SessionModel implements ToXContentObject {
+public class SessionModel extends StateModel {
   public static final String VERSION = "version";
   public static final String TYPE = "type";
   public static final String SESSION_TYPE = "sessionType";
@@ -73,6 +73,27 @@ public static SessionModel of(SessionModel copy, long seqNo, long primaryTerm) {
         .sessionId(new SessionId(copy.sessionId.getSessionId()))
         .sessionState(copy.sessionState)
         .datasourceName(copy.datasourceName)
+        .applicationId(copy.getApplicationId())
+        .jobId(copy.jobId)
+        .error(UNKNOWN)
+        .lastUpdateTime(copy.getLastUpdateTime())
+        .seqNo(seqNo)
+        .primaryTerm(primaryTerm)
+        .build();
+  }
+
+  public static SessionModel copyWithState(
+      SessionModel copy, SessionState state, long seqNo, long primaryTerm) {
+    return builder()
+        .version(copy.version)
+        .sessionType(copy.sessionType)
+        .sessionId(new SessionId(copy.sessionId.getSessionId()))
+        .sessionState(state)
+        .datasourceName(copy.datasourceName)
+        .applicationId(copy.getApplicationId())
+        .jobId(copy.jobId)
+        .error(UNKNOWN)
+        .lastUpdateTime(copy.getLastUpdateTime())
         .seqNo(seqNo)
         .primaryTerm(primaryTerm)
         .build();
@@ -140,4 +161,9 @@ public static SessionModel initInteractiveSession(
         .primaryTerm(SequenceNumbers.UNASSIGNED_PRIMARY_TERM)
         .build();
   }
+
+  @Override
+  public String getId() {
+    return sessionId.getSessionId();
+  }
 }

spark/src/main/java/org/opensearch/sql/spark/execution/session/SessionState.java

@@ -5,7 +5,9 @@
 
 package org.opensearch.sql.spark.execution.session;
 
+import com.google.common.collect.ImmutableList;
 import java.util.Arrays;
+import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
 import lombok.Getter;
@@ -17,6 +19,8 @@ public enum SessionState {
   DEAD("dead"),
   FAIL("fail");
 
+  public static List<SessionState> END_STATE = ImmutableList.of(DEAD, FAIL);
+
   private final String sessionState;
 
   SessionState(String sessionState) {

spark/src/main/java/org/opensearch/sql/spark/execution/statement/QueryRequest.java

@@ -0,0 +1,15 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.opensearch.sql.spark.execution.statement;
+
+import lombok.Data;
+import org.opensearch.sql.spark.rest.model.LangType;
+
+@Data
+public class QueryRequest {
+  private final LangType langType;
+  private final String query;
+}

spark/src/main/java/org/opensearch/sql/spark/execution/statement/Statement.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.opensearch.sql.spark.execution.statement;
+
+import static org.opensearch.sql.spark.execution.statement.StatementModel.submitStatement;
+import static org.opensearch.sql.spark.execution.statestore.StateStore.createStatement;
+import static org.opensearch.sql.spark.execution.statestore.StateStore.getStatement;
+import static org.opensearch.sql.spark.execution.statestore.StateStore.updateStatementState;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.Setter;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.opensearch.index.engine.DocumentMissingException;
+import org.opensearch.index.engine.VersionConflictEngineException;
+import org.opensearch.sql.spark.execution.session.SessionId;
+import org.opensearch.sql.spark.execution.statestore.StateStore;
+import org.opensearch.sql.spark.rest.model.LangType;
+
+/** Statement represent query to execute in session. One statement map to one session. */
+@Getter
+@Builder
+public class Statement {
+  private static final Logger LOG = LogManager.getLogger();
+
+  private final SessionId sessionId;
+  private final String applicationId;
+  private final String jobId;
+  private final StatementId statementId;
+  private final LangType langType;
+  private final String query;
+  private final String queryId;
+  private final StateStore stateStore;
+
+  @Setter private StatementModel statementModel;
+
+  /** Open a statement. */
+  public void open() {
+    try {
+      statementModel =
+          submitStatement(sessionId, applicationId, jobId, statementId, langType, query, queryId);
+      statementModel = createStatement(stateStore).apply(statementModel);
+    } catch (VersionConflictEngineException e) {
+      String errorMsg = "statement already exist. " + statementId;
+      LOG.error(errorMsg);
+      throw new IllegalStateException(errorMsg);
+    }
+  }
+
+  /** Cancel a statement. */
+  public void cancel() {
+    if (statementModel.getStatementState().equals(StatementState.RUNNING)) {
+      String errorMsg =
+          String.format("can't cancel statement in waiting state. statement: %s.", statementId);
+      LOG.error(errorMsg);
+      throw new IllegalStateException(errorMsg);
+    }
+    try {
+      this.statementModel =
+          updateStatementState(stateStore).apply(this.statementModel, StatementState.CANCELLED);
+    } catch (DocumentMissingException e) {
+      String errorMsg =
+          String.format("cancel statement failed. no statement found. statement: %s.", statementId);
+      LOG.error(errorMsg);
+      throw new IllegalStateException(errorMsg);
+    } catch (VersionConflictEngineException e) {
+      this.statementModel =
+          getStatement(stateStore).apply(statementModel.getId()).orElse(this.statementModel);
+      String errorMsg =
+          String.format(
+              "cancel statement failed. current statementState: %s " + "statement: %s.",
+              this.statementModel.getStatementState(), statementId);
+      LOG.error(errorMsg);
+      throw new IllegalStateException(errorMsg);
+    }
+  }
+
+  public StatementState getStatementState() {
+    return statementModel.getStatementState();
+  }
+}