io.cdap.plugin.batch.source.SnapshotFileSetSourceConfig Maven / Gradle / Ivy
/*
* Copyright © 2018-2019 Cask Data, Inc.
*
* Licensed 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 io.cdap.plugin.batch.source;
import io.cdap.cdap.api.annotation.Description;
import io.cdap.cdap.api.annotation.Macro;
import io.cdap.cdap.api.data.schema.Schema;
import io.cdap.plugin.common.SnapshotFileSetConfig;
import java.io.IOException;
import javax.annotation.Nullable;
/**
* Plugin config for snapshot sources, which always require a schema.
*/
public class SnapshotFileSetSourceConfig extends SnapshotFileSetConfig {
@Macro
@Description("Schema of data to read.")
private String schema;
@Nullable
public Schema getSchema() {
try {
return containsMacro("schema") || schema == null ? null : Schema.parseJson(schema);
} catch (IOException e) {
throw new IllegalArgumentException("Unable to parse schema: " + e.getMessage(), e);
}
}
}