Github user pvillard31 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2682#discussion_r216691828
--- Diff:
nifi-nar-bundles/nifi-gcp-bundle/nifi-gcp-processors/src/main/java/org/apache/nifi/processors/gcp/bigquery/PutBigQueryBatch.java
---
@@ -0,0 +1,269 @@
+/*
+ * 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.
+ */
+
+package org.apache.nifi.processors.gcp.bigquery;
+
+import com.google.cloud.RetryOption;
+import com.google.cloud.bigquery.BigQuery;
+import com.google.cloud.bigquery.FormatOptions;
+import com.google.cloud.bigquery.Job;
+import com.google.cloud.bigquery.JobInfo;
+import com.google.cloud.bigquery.Schema;
+import com.google.cloud.bigquery.TableDataWriteChannel;
+import com.google.cloud.bigquery.TableId;
+import com.google.cloud.bigquery.WriteChannelConfiguration;
+import com.google.common.collect.ImmutableList;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.logging.LogLevel;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.processors.gcp.storage.DeleteGCSObject;
+import org.apache.nifi.processors.gcp.storage.PutGCSObject;
+import org.apache.nifi.util.StringUtils;
+import org.threeten.bp.Duration;
+import org.threeten.bp.temporal.ChronoUnit;
+
+import java.nio.ByteBuffer;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * A processor for batch loading data into a Google BigQuery table
+ */
+
+@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED)
+@Tags({"google", "google cloud", "bq", "bigquery"})
+@CapabilityDescription("Batch loads flow files to a Google BigQuery
table.")
+@SeeAlso({PutGCSObject.class, DeleteGCSObject.class})
+
+@WritesAttributes({
+ @WritesAttribute(attribute = BigQueryAttributes.DATASET_ATTR,
description = BigQueryAttributes.DATASET_DESC),
+ @WritesAttribute(attribute = BigQueryAttributes.TABLE_NAME_ATTR,
description = BigQueryAttributes.TABLE_NAME_DESC),
+ @WritesAttribute(attribute = BigQueryAttributes.TABLE_SCHEMA_ATTR,
description = BigQueryAttributes.TABLE_SCHEMA_DESC),
+ @WritesAttribute(attribute = BigQueryAttributes.SOURCE_TYPE_ATTR,
description = BigQueryAttributes.SOURCE_TYPE_DESC),
+ @WritesAttribute(attribute =
BigQueryAttributes.IGNORE_UNKNOWN_ATTR, description =
BigQueryAttributes.IGNORE_UNKNOWN_DESC),
+ @WritesAttribute(attribute =
BigQueryAttributes.CREATE_DISPOSITION_ATTR, description =
BigQueryAttributes.CREATE_DISPOSITION_DESC),
+ @WritesAttribute(attribute =
BigQueryAttributes.WRITE_DISPOSITION_ATTR, description =
BigQueryAttributes.WRITE_DISPOSITION_DESC),
+ @WritesAttribute(attribute =
BigQueryAttributes.MAX_BADRECORDS_ATTR, description =
BigQueryAttributes.MAX_BADRECORDS_DESC),
+ @WritesAttribute(attribute =
BigQueryAttributes.JOB_CREATE_TIME_ATTR, description =
BigQueryAttributes.JOB_CREATE_TIME_DESC),
+ @WritesAttribute(attribute = BigQueryAttributes.JOB_END_TIME_ATTR,
description = BigQueryAttributes.JOB_END_TIME_DESC),
+ @WritesAttribute(attribute =
BigQueryAttributes.JOB_START_TIME_ATTR, description =
BigQueryAttributes.JOB_START_TIME_DESC),
+ @WritesAttribute(attribute = BigQueryAttributes.JOB_LINK_ATTR,
description = BigQueryAttributes.JOB_LINK_DESC),
+ @WritesAttribute(attribute =
BigQueryAttributes.JOB_ERROR_MSG_ATTR, description =
BigQueryAttributes.JOB_ERROR_MSG_DESC),
+ @WritesAttribute(attribute =
BigQueryAttributes.JOB_ERROR_REASON_ATTR, description =
BigQueryAttributes.JOB_ERROR_REASON_DESC),
+ @WritesAttribute(attribute =
BigQueryAttributes.JOB_ERROR_LOCATION_ATTR, description =
BigQueryAttributes.JOB_ERROR_LOCATION_DESC)
+})
+
+public class PutBigQueryBatch extends AbstractBigQueryProcessor {
+
+ public static final PropertyDescriptor SOURCE_TYPE = new
PropertyDescriptor
+ .Builder().name(BigQueryAttributes.SOURCE_TYPE_ATTR)
+ .displayName("Load file type")
+ .description(BigQueryAttributes.SOURCE_TYPE_DESC)
+ .required(true)
+ .allowableValues(FormatOptions.json().getType(),
FormatOptions.avro().getType(), FormatOptions.csv().getType())
+ .defaultValue(FormatOptions.avro().getType())
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .build();
+
+ public static final PropertyDescriptor IGNORE_UNKNOWN = new
PropertyDescriptor.Builder()
+ .name(BigQueryAttributes.IGNORE_UNKNOWN_ATTR)
+ .displayName("Ignore Unknown Values")
+ .description(BigQueryAttributes.IGNORE_UNKNOWN_DESC)
+ .required(true)
+ .addValidator(StandardValidators.BOOLEAN_VALIDATOR)
+ .allowableValues("true", "false")
+ .defaultValue("true")
+ .build();
+
+ public static final PropertyDescriptor CREATE_DISPOSITION = new
PropertyDescriptor.Builder()
+ .name(BigQueryAttributes.CREATE_DISPOSITION_ATTR)
+ .displayName("Create Disposition")
+ .description(BigQueryAttributes.CREATE_DISPOSITION_DESC)
+ .required(true)
+
.allowableValues(JobInfo.CreateDisposition.CREATE_IF_NEEDED.name(),
JobInfo.CreateDisposition.CREATE_NEVER.name())
+
.defaultValue(JobInfo.CreateDisposition.CREATE_IF_NEEDED.name())
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .build();
+
+ public static final PropertyDescriptor WRITE_DISPOSITION = new
PropertyDescriptor.Builder()
+ .name(BigQueryAttributes.WRITE_DISPOSITION_ATTR)
+ .displayName("Write Disposition")
+ .description(BigQueryAttributes.WRITE_DISPOSITION_DESC)
+ .required(true)
+ .allowableValues(JobInfo.WriteDisposition.WRITE_EMPTY.name(),
JobInfo.WriteDisposition.WRITE_APPEND.name(),
JobInfo.WriteDisposition.WRITE_TRUNCATE.name())
+ .defaultValue(JobInfo.WriteDisposition.WRITE_EMPTY.name())
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .build();
+
+ public static final PropertyDescriptor MAXBAD_RECORDS = new
PropertyDescriptor.Builder()
+ .name(BigQueryAttributes.MAX_BADRECORDS_ATTR)
+ .displayName("Max Bad Records")
+ .description(BigQueryAttributes.MAX_BADRECORDS_DESC)
+ .required(true)
+ .defaultValue("0")
+
.addValidator(StandardValidators.NON_NEGATIVE_INTEGER_VALIDATOR)
+ .build();
+
+ private Schema schemaCache = null;
+
+ public PutBigQueryBatch() {
+
+ }
+
+ @Override
+ public List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+ return ImmutableList.<PropertyDescriptor>builder()
+ .addAll(super.getSupportedPropertyDescriptors())
+ .add(DATASET)
+ .add(TABLE_NAME)
+ .add(TABLE_SCHEMA)
+ .add(SOURCE_TYPE)
+ .add(CREATE_DISPOSITION)
+ .add(WRITE_DISPOSITION)
+ .add(MAXBAD_RECORDS)
+ .add(IGNORE_UNKNOWN)
+ .build();
+ }
+
+ @Override
+ protected PropertyDescriptor
getSupportedDynamicPropertyDescriptor(final String propertyDescriptorName) {
+ return new PropertyDescriptor.Builder()
+ .name(propertyDescriptorName)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .expressionLanguageSupported(true)
+ .dynamic(true)
+ .build();
+ }
+
+ @Override
+ @OnScheduled
+ public void onScheduled(ProcessContext context) {
+ super.onScheduled(context);
+ }
+
+ @Override
+ public void onTrigger(ProcessContext context, ProcessSession session)
throws ProcessException {
+ FlowFile flowFile = session.get();
+ if (flowFile == null) {
+ return;
+ }
+
+ final Map<String, String> attributes = new HashMap<>();
+
+ final BigQuery bq = getCloudService();
+
+ final String projectId =
context.getProperty(PROJECT_ID).evaluateAttributeExpressions().getValue();
+ final String dataset =
context.getProperty(DATASET).evaluateAttributeExpressions(flowFile).getValue();
+ final String tableName =
context.getProperty(TABLE_NAME).evaluateAttributeExpressions(flowFile).getValue();
+
+ final TableId tableId;
+ if (StringUtils.isEmpty(projectId)) {
+ tableId = TableId.of(dataset, tableName);
+ } else {
+ tableId = TableId.of(projectId, dataset, tableName);
+ }
+
+ final String fileType =
context.getProperty(SOURCE_TYPE).getValue();
+
+ String schemaString =
context.getProperty(TABLE_SCHEMA).evaluateAttributeExpressions().getValue();
+ Schema schema = BqUtils.schemaFromString(schemaString);
+
+ WriteChannelConfiguration writeChannelConfiguration =
+ WriteChannelConfiguration.newBuilder(tableId)
+
.setCreateDisposition(JobInfo.CreateDisposition.valueOf(context.getProperty(CREATE_DISPOSITION).getValue()))
+
.setWriteDisposition(JobInfo.WriteDisposition.valueOf(context.getProperty(WRITE_DISPOSITION).getValue()))
+
.setIgnoreUnknownValues(context.getProperty(IGNORE_UNKNOWN).asBoolean())
+
.setMaxBadRecords(context.getProperty(MAXBAD_RECORDS).asInteger())
+ .setSchema(schema)
+ .setFormatOptions(FormatOptions.of(fileType))
--- End diff --
In case the input if a CSV file, there are options available to define
properties of the dataset (such as header, field delimiter, etc). Can we expose
that to the user? or, if not, describe how the data will be processed?
---
