feat: add support for session_id in load jobs (#2519)

* feat: add support for session_id in load jobs

* chore: fix variable change

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: Neenu1995

google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/LoadJobConfiguration.java

@@ -22,6 +22,7 @@
 import com.google.common.base.MoreObjects.ToStringHelper;
 import com.google.common.base.Strings;
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Lists;
 import com.google.common.primitives.Ints;
 import java.util.List;
 import java.util.Map;
@@ -58,6 +59,10 @@ public final class LoadJobConfiguration extends JobConfiguration implements Load
   private final HivePartitioningOptions hivePartitioningOptions;
   private final String referenceFileSchemaUri;
 
+  private final List<ConnectionProperty> connectionProperties;
+
+  private final Boolean createSession;
+
   public static final class Builder extends JobConfiguration.Builder<LoadJobConfiguration, Builder>
       implements LoadConfiguration.Builder {
 
@@ -83,6 +88,8 @@ public static final class Builder extends JobConfiguration.Builder<LoadJobConfig
     private RangePartitioning rangePartitioning;
     private HivePartitioningOptions hivePartitioningOptions;
     private String referenceFileSchemaUri;
+    private List<ConnectionProperty> connectionProperties;
+    private Boolean createSession;
 
     private Builder() {
       super(Type.LOAD);
@@ -112,6 +119,8 @@ private Builder(LoadJobConfiguration loadConfiguration) {
       this.rangePartitioning = loadConfiguration.rangePartitioning;
       this.hivePartitioningOptions = loadConfiguration.hivePartitioningOptions;
       this.referenceFileSchemaUri = loadConfiguration.referenceFileSchemaUri;
+      this.connectionProperties = loadConfiguration.connectionProperties;
+      this.createSession = loadConfiguration.createSession;
     }
 
     private Builder(com.google.api.services.bigquery.model.JobConfiguration configurationPb) {
@@ -205,6 +214,13 @@ private Builder(com.google.api.services.bigquery.model.JobConfiguration configur
       if (loadConfigurationPb.getReferenceFileSchemaUri() != null) {
         this.referenceFileSchemaUri = loadConfigurationPb.getReferenceFileSchemaUri();
       }
+      if (loadConfigurationPb.getConnectionProperties() != null) {
+
+        this.connectionProperties =
+            Lists.transform(
+                loadConfigurationPb.getConnectionProperties(), ConnectionProperty.FROM_PB_FUNCTION);
+      }
+      createSession = loadConfigurationPb.getCreateSession();
     }
 
     @Override
@@ -368,6 +384,16 @@ public Builder setReferenceFileSchemaUri(String referenceFileSchemaUri) {
       return this;
     }
 
+    public Builder setConnectionProperties(List<ConnectionProperty> connectionProperties) {
+      this.connectionProperties = ImmutableList.copyOf(connectionProperties);
+      return this;
+    }
+
+    public Builder setCreateSession(Boolean createSession) {
+      this.createSession = createSession;
+      return this;
+    }
+
     @Override
     public LoadJobConfiguration build() {
       return new LoadJobConfiguration(this);
@@ -397,6 +423,8 @@ private LoadJobConfiguration(Builder builder) {
     this.rangePartitioning = builder.rangePartitioning;
     this.hivePartitioningOptions = builder.hivePartitioningOptions;
     this.referenceFileSchemaUri = builder.referenceFileSchemaUri;
+    this.connectionProperties = builder.connectionProperties;
+    this.createSession = builder.createSession;
   }
 
   @Override
@@ -520,6 +548,14 @@ public String getReferenceFileSchemaUri() {
     return referenceFileSchemaUri;
   }
 
+  public List<ConnectionProperty> getConnectionProperties() {
+    return connectionProperties;
+  }
+
+  public Boolean getCreateSession() {
+    return createSession;
+  }
+
   @Override
   public Builder toBuilder() {
     return new Builder(this);
@@ -548,7 +584,9 @@ ToStringHelper toStringHelper() {
         .add("jobTimeoutMs", jobTimeoutMs)
         .add("rangePartitioning", rangePartitioning)
         .add("hivePartitioningOptions", hivePartitioningOptions)
-        .add("referenceFileSchemaUri", referenceFileSchemaUri);
+        .add("referenceFileSchemaUri", referenceFileSchemaUri)
+        .add("connectionProperties", connectionProperties)
+        .add("createSession", createSession);
   }
 
   @Override
@@ -654,6 +692,13 @@ com.google.api.services.bigquery.model.JobConfiguration toPb() {
     if (referenceFileSchemaUri != null) {
       loadConfigurationPb.setReferenceFileSchemaUri(referenceFileSchemaUri);
     }
+    if (connectionProperties != null) {
+      loadConfigurationPb.setConnectionProperties(
+          Lists.transform(connectionProperties, ConnectionProperty.TO_PB_FUNCTION));
+    }
+    if (createSession != null) {
+      loadConfigurationPb.setCreateSession(createSession);
+    }
 
     jobConfiguration.setLoad(loadConfigurationPb);
     return jobConfiguration;

google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/LoadJobConfigurationTest.java

@@ -57,6 +57,8 @@ public class LoadJobConfigurationTest {
   private static final Schema TABLE_SCHEMA = Schema.of(FIELD_SCHEMA);
   private static final Boolean AUTODETECT = true;
   private static final Boolean USE_AVRO_LOGICAL_TYPES = true;
+
+  private static final boolean CREATE_SESSION = true;
   private static final EncryptionConfiguration JOB_ENCRYPTION_CONFIGURATION =
       EncryptionConfiguration.newBuilder().setKmsKeyName("KMS_KEY_1").build();
   private static final TimePartitioning TIME_PARTITIONING = TimePartitioning.of(Type.DAY);
@@ -71,6 +73,13 @@ public class LoadJobConfigurationTest {
       RangePartitioning.newBuilder().setField("IntegerField").setRange(RANGE).build();
   private static final String MODE = "STRING";
   private static final String SOURCE_URI_PREFIX = "gs://bucket/path_to_table";
+
+  private static final String KEY = "session_id";
+  private static final String VALUE = "session_id_1234567890";
+  private static final ConnectionProperty CONNECTION_PROPERTY =
+      ConnectionProperty.newBuilder().setKey(KEY).setValue(VALUE).build();
+  private static final List<ConnectionProperty> CONNECTION_PROPERTIES =
+      ImmutableList.of(CONNECTION_PROPERTY);
   private static final HivePartitioningOptions HIVE_PARTITIONING_OPTIONS =
       HivePartitioningOptions.newBuilder()
           .setMode(MODE)
@@ -95,6 +104,8 @@ public class LoadJobConfigurationTest {
           .setRangePartitioning(RANGE_PARTITIONING)
           .setNullMarker("nullMarker")
           .setHivePartitioningOptions(HIVE_PARTITIONING_OPTIONS)
+          .setConnectionProperties(CONNECTION_PROPERTIES)
+          .setCreateSession(CREATE_SESSION)
           .build();
 
   private static final DatastoreBackupOptions BACKUP_OPTIONS =
@@ -253,5 +264,7 @@ private void compareLoadJobConfiguration(
     assertEquals(expected.getRangePartitioning(), value.getRangePartitioning());
     assertEquals(expected.getNullMarker(), value.getNullMarker());
     assertEquals(expected.getHivePartitioningOptions(), value.getHivePartitioningOptions());
+    assertEquals(expected.getConnectionProperties(), value.getConnectionProperties());
+    assertEquals(expected.getCreateSession(), value.getCreateSession());
   }
 }

google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/it/ITBigQueryTest.java

@@ -3655,6 +3655,56 @@ public void testQuerySessionSupport() throws InterruptedException {
     assertEquals(sessionId, statisticsWithSession.getSessionInfo().getSessionId());
   }
 
+  @Test
+  public void testLoadSessionSupport() throws InterruptedException {
+    // Start the session
+    TableId sessionTableId = TableId.of("_SESSION", "test_temp_destination_table");
+    LoadJobConfiguration configuration =
+        LoadJobConfiguration.newBuilder(
+                sessionTableId, "gs://" + BUCKET + "/" + JSON_LOAD_FILE, FormatOptions.json())
+            .setCreateDisposition(JobInfo.CreateDisposition.CREATE_IF_NEEDED)
+            .setSchema(TABLE_SCHEMA)
+            .setCreateSession(true)
+            .build();
+    Job job = bigquery.create(JobInfo.of(configuration));
+    job = job.waitFor();
+    assertNull(job.getStatus().getError());
+
+    Job loadJob = bigquery.getJob(job.getJobId());
+    JobStatistics.LoadStatistics statistics = loadJob.getStatistics();
+    String sessionId = statistics.getSessionInfo().getSessionId();
+    assertNotNull(sessionId);
+
+    // Load job in the same session.
+    // Should load the data to a temp table.
+    ConnectionProperty sessionConnectionProperty =
+        ConnectionProperty.newBuilder().setKey("session_id").setValue(sessionId).build();
+    LoadJobConfiguration loadJobConfigurationWithSession =
+        LoadJobConfiguration.newBuilder(
+                sessionTableId, "gs://" + BUCKET + "/" + JSON_LOAD_FILE, FormatOptions.json())
+            .setCreateDisposition(JobInfo.CreateDisposition.CREATE_IF_NEEDED)
+            .setSchema(TABLE_SCHEMA)
+            .setConnectionProperties(ImmutableList.of(sessionConnectionProperty))
+            .build();
+    Job remoteJobWithSession = bigquery.create(JobInfo.of(loadJobConfigurationWithSession));
+    remoteJobWithSession = remoteJobWithSession.waitFor();
+    assertNull(remoteJobWithSession.getStatus().getError());
+    Job queryJobWithSession = bigquery.getJob(remoteJobWithSession.getJobId());
+    LoadStatistics statisticsWithSession = queryJobWithSession.getStatistics();
+    assertNotNull(statisticsWithSession.getSessionInfo().getSessionId());
+
+    // Checking if the data loaded to the temp table in the session
+    String queryTempTable = "SELECT * FROM _SESSION.test_temp_destination_table;";
+    QueryJobConfiguration queryJobConfigurationWithSession =
+        QueryJobConfiguration.newBuilder(queryTempTable)
+            .setConnectionProperties(ImmutableList.of(sessionConnectionProperty))
+            .build();
+    Job queryTempTableJob = bigquery.create(JobInfo.of(queryJobConfigurationWithSession));
+    queryTempTableJob = queryTempTableJob.waitFor();
+    assertNull(queryTempTableJob.getStatus().getError());
+    assertNotNull(queryTempTableJob.getQueryResults());
+  }
+
   // TODO: uncomment this testcase when executeUpdate is implemented
   // @Test
   // public void testExecuteSelectWithSession() throws BigQuerySQLException {