simple code to get file from URL
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package eu.dnetlib.dhp.schema.oaf;
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public class Programme {
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}
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package eu.dnetlib.dhp.actionset.h2020programme;
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import java.io.*;
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import java.net.URL;
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import org.apache.commons.io.IOUtils;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.FSDataOutputStream;
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import org.apache.hadoop.fs.FileSystem;
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import org.apache.hadoop.fs.Path;
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import eu.dnetlib.dhp.application.ArgumentApplicationParser;
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public class GetFile {
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private static final Log log = LogFactory.getLog(GetFile.class);
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public static void main(final String[] args) throws Exception {
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final ArgumentApplicationParser parser = new ArgumentApplicationParser(
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IOUtils
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.toString(
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GetFile.class
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.getResourceAsStream(
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"/eu/dnetlib/dhp/actionset/h2020programme/parameters.json")));
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Configuration conf = new Configuration();
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parser.parseArgument(args);
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final String fileURL = parser.get("fileURL");
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final String hdfsPath = parser.get("hdfsPath");
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final String hdfsNameNode = parser.get("hdfsNameNode");
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conf.set("fs.defaultFS", hdfsNameNode);
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FileSystem fileSystem = FileSystem.get(conf);
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Path hdfsWritePath = new Path(hdfsPath);
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FSDataOutputStream fsDataOutputStream = null;
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if (fileSystem.exists(hdfsWritePath)) {
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fsDataOutputStream = fileSystem.append(hdfsWritePath);
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} else {
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fsDataOutputStream = fileSystem.create(hdfsWritePath);
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}
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InputStream is = new BufferedInputStream(new URL(fileURL).openStream());
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org.apache.hadoop.io.IOUtils.copyBytes(is, fsDataOutputStream, 4096, true);
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}
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}
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<workflow-app name="CollectionWorkflow" xmlns="uri:oozie:workflow:0.5">
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<parameters>
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<property>
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<name>sequenceFilePath</name>
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<description>the path to store the sequence file of the native metadata collected</description>
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</property>
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<property>
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<name>mdStorePath</name>
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<description>the path of the native mdstore</description>
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</property>
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<property>
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<name>apiDescription</name>
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<description>A json encoding of the API Description class</description>
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</property>
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<property>
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<name>dataSourceInfo</name>
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<description>A json encoding of the Datasource Info</description>
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</property>
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<property>
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<name>identifierPath</name>
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<description>An xpath to retrieve the metadata idnentifier for the generation of DNet Identifier </description>
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</property>
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<property>
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<name>metadataEncoding</name>
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<description> The type of the metadata XML/JSON</description>
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</property>
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<property>
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<name>timestamp</name>
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<description>The timestamp of the collection date</description>
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</property>
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<property>
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<name>workflowId</name>
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<description>The identifier of the workflow</description>
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</property>
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</parameters>
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<start to="DeleteMDStoresNative"/>
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<kill name="Kill">
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<message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
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</kill>
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<action name="DeleteMDStoresNative">
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<fs>
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<mkdir path='${sequenceFilePath}'/>
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<mkdir path='${mdStorePath}'/>
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<delete path='${sequenceFilePath}'/>
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<delete path='${mdStorePath}'/>
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</fs>
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<ok to="CollectionWorker"/>
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<error to="Kill"/>
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</action>
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<action name="CollectionWorker">
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<java>
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<job-tracker>${jobTracker}</job-tracker>
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<name-node>${nameNode}</name-node>
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<main-class>eu.dnetlib.dhp.collection.worker.DnetCollectorWorker</main-class>
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<java-opts>-p</java-opts><java-opts>${sequenceFilePath}</java-opts>
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<java-opts>-a</java-opts><java-opts>${apiDescription}</java-opts>
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<java-opts>-n</java-opts><java-opts>${nameNode}</java-opts>
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<java-opts>-rh</java-opts><java-opts>${rmq_host}</java-opts>
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<java-opts>-ru</java-opts><java-opts>${rmq_user}</java-opts>
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<java-opts>-rp</java-opts><java-opts>${rmq_pwd}</java-opts>
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<java-opts>-rr</java-opts><java-opts>${rmq_report}</java-opts>
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<java-opts>-ro</java-opts><java-opts>${rmq_ongoing}</java-opts>
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<java-opts>-u</java-opts><java-opts>sandro.labruzzo</java-opts>
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<java-opts>-w</java-opts><java-opts>${workflowId}</java-opts>
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</java>
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<ok to="GenerateNativeStoreSparkJob"/>
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<error to="Kill"/>
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</action>
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<action name="GenerateNativeStoreSparkJob">
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<spark xmlns="uri:oozie:spark-action:0.2">
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<job-tracker>${jobTracker}</job-tracker>
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<name-node>${nameNode}</name-node>
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<master>yarn</master>
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<mode>cluster</mode>
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<name>GenerateNativeStoreSparkJob</name>
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<class>eu.dnetlib.dhp.collection.GenerateNativeStoreSparkJob</class>
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<jar>dhp-aggregations-1.0.0-SNAPSHOT.jar</jar>
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<spark-opts>--num-executors 50 --conf spark.yarn.jars="hdfs://hadoop-rm1.garr-pa1.d4science.org:8020/user/oozie/share/lib/lib_20180405103059/spark2"</spark-opts>
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<arg>--encoding</arg> <arg>${metadataEncoding}</arg>
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<arg>--dateOfCollection</arg> <arg>${timestamp}</arg>
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<arg>--provenance</arg> <arg> ${dataSourceInfo}</arg>
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<arg>--xpath</arg><arg>${identifierPath}</arg>
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<arg>--input</arg><arg>${sequenceFilePath}</arg>
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<arg>--output</arg><arg>${mdStorePath}</arg>
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<arg>-rh</arg><arg>${rmq_host}</arg>
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<arg>-ru</arg><arg>${rmq_user}</arg>
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<arg>-rp</arg><arg>${rmq_pwd}</arg>
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<arg>-rr</arg><arg>${rmq_report}</arg>
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<arg>-ro</arg><arg>${rmq_ongoing}</arg>
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<arg>-w</arg><arg>${workflowId}</arg>
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</spark>
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<ok to="End"/>
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<error to="DropInvalidStore"/>
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</action>
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<action name="DropInvalidStore">
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<fs>
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<delete path='${mdStorePath}/../'/>
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</fs>
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<ok to="Kill"/>
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<error to="Kill"/>
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</action>
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<end name="End"/>
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</workflow-app>
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@ -0,0 +1,86 @@
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[
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{
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"paramName": "issm",
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"paramLongName": "isSparkSessionManaged",
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"paramDescription": "when true will stop SparkSession after job execution",
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"paramRequired": false
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},
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{
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"paramName": "e",
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"paramLongName": "encoding",
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"paramDescription": "the encoding of the input record should be JSON or XML",
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"paramRequired": true
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},
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{
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"paramName": "d",
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"paramLongName": "dateOfCollection",
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"paramDescription": "the date when the record has been stored",
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"paramRequired": true
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},
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{
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"paramName": "p",
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"paramLongName": "provenance",
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"paramDescription": "the infos about the provenance of the collected records",
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"paramRequired": true
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},
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{
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"paramName": "x",
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"paramLongName": "xpath",
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"paramDescription": "the xpath to identify the record identifier",
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"paramRequired": true
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},
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{
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"paramName": "i",
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"paramLongName": "input",
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"paramDescription": "the path of the sequencial file to read",
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"paramRequired": true
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},
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{
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"paramName": "o",
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"paramLongName": "output",
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"paramDescription": "the path of the result DataFrame on HDFS",
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"paramRequired": true
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},
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{
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"paramName": "ru",
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"paramLongName": "rabbitUser",
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"paramDescription": "the user to connect with RabbitMq for messaging",
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"paramRequired": true
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},
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{
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"paramName": "rp",
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"paramLongName": "rabbitPassword",
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"paramDescription": "the password to connect with RabbitMq for messaging",
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"paramRequired": true
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},
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{
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"paramName": "rh",
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"paramLongName": "rabbitHost",
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"paramDescription": "the host of the RabbitMq server",
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"paramRequired": true
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},
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{
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"paramName": "ro",
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"paramLongName": "rabbitOngoingQueue",
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"paramDescription": "the name of the ongoing queue",
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"paramRequired": true
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},
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{
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"paramName": "rr",
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"paramLongName": "rabbitReportQueue",
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"paramDescription": "the name of the report queue",
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"paramRequired": true
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},
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{
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"paramName": "w",
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"paramLongName": "workflowId",
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"paramDescription": "the identifier of the dnet Workflow",
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"paramRequired": true
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},
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{
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"paramName": "t",
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"paramLongName": "isTest",
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"paramDescription": "the name of the report queue",
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"paramRequired": false
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}
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]
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