[GitHub] nifi pull request #850: NIFI-2547: Add DeleteHDFS Processor

[asfgit]

Github user asfgit closed the pull request at:

https://github.com/apache/nifi/pull/850


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[GitHub] nifi pull request #850: NIFI-2547: Add DeleteHDFS Processor

[mattyb149]

Github user mattyb149 commented on a diff in the pull request:

https://github.com/apache/nifi/pull/850#discussion_r75594158
  
--- Diff: 
nifi-nar-bundles/nifi-hadoop-bundle/nifi-hdfs-processors/src/test/java/org/apache/nifi/processors/hadoop/TestDeleteHDFS.java
 ---
@@ -0,0 +1,198 @@
+/*
+ * 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.hadoop;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
+
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.hadoop.KerberosProperties;
+import org.apache.nifi.util.MockFlowFile;
+import org.apache.nifi.util.NiFiProperties;
+import org.apache.nifi.util.TestRunner;
+import org.apache.nifi.util.TestRunners;
+import org.junit.Before;
+import org.junit.Test;
+import static org.junit.Assert.*;
--- End diff --

Star imports cause a checkstyle violation when running with the 
contrib-check profile in Maven. I can make the checkstyle changes while merging 
this PR, just bringing it up here for the future :)


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[GitHub] nifi pull request #850: NIFI-2547: Add DeleteHDFS Processor

[mattyb149]

Github user mattyb149 commented on a diff in the pull request:

https://github.com/apache/nifi/pull/850#discussion_r75594156
  
--- Diff: 
nifi-nar-bundles/nifi-hadoop-bundle/nifi-hdfs-processors/src/test/java/org/apache/nifi/processors/hadoop/TestDeleteHDFS.java
 ---
@@ -0,0 +1,198 @@
+/*
+ * 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.hadoop;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
--- End diff --

This guy appears unused so causes a checkstyle violation when running with 
the contrib-check profile in Maven


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[GitHub] nifi pull request #850: NIFI-2547: Add DeleteHDFS Processor

[rickysaltzer]

Github user rickysaltzer commented on a diff in the pull request:

https://github.com/apache/nifi/pull/850#discussion_r75538007
  
--- Diff: 
nifi-nar-bundles/nifi-hadoop-bundle/nifi-hdfs-processors/src/test/java/org/apache/nifi/processors/hadoop/TestDeleteHDFS.java
 ---
@@ -0,0 +1,187 @@
+/*
+ * 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.hadoop;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.hadoop.KerberosProperties;
+import org.apache.nifi.util.MockFlowFile;
+import org.apache.nifi.util.NiFiProperties;
+import org.apache.nifi.util.TestRunner;
+import org.apache.nifi.util.TestRunners;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.google.common.collect.Maps;
+
+public class TestDeleteHDFS {
+private NiFiProperties mockNiFiProperties;
+private FileSystem mockFileSystem;
+private KerberosProperties kerberosProperties;
+
+@Before
+public void setup() throws Exception {
+mockNiFiProperties = mock(NiFiProperties.class);
+
when(mockNiFiProperties.getKerberosConfigurationFile()).thenReturn(null);
+kerberosProperties = KerberosProperties.create(mockNiFiProperties);
+mockFileSystem = mock(FileSystem.class);
--- End diff --

I could rewrite it to use the local fs, but I was just going off how the 
other tests behaved. 


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[GitHub] nifi pull request #850: NIFI-2547: Add DeleteHDFS Processor

[rickysaltzer]

Github user rickysaltzer commented on a diff in the pull request:

https://github.com/apache/nifi/pull/850#discussion_r75537912
  
--- Diff: 
nifi-nar-bundles/nifi-hadoop-bundle/nifi-hdfs-processors/src/main/java/org/apache/nifi/processors/hadoop/DeleteHDFS.java
 ---
@@ -0,0 +1,161 @@
+/*
+ * 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.hadoop;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.TriggerWhenEmpty;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+
+@TriggerWhenEmpty
+@InputRequirement(InputRequirement.Requirement.INPUT_ALLOWED)
+@Tags({ "hadoop", "HDFS", "delete", "remove", "filesystem" })
+@CapabilityDescription("Deletes a file from HDFS. The file can be provided 
as an attribute from an incoming FlowFile, "
++ "or a statically set file that is periodically removed. If this 
processor has an incoming connection, it"
++ "will ignore running on a periodic basis and instead rely on 
incoming FlowFiles to trigger a delete. "
++ "Optionally, you may specify use a wildcard character to match 
multiple files or directories.")
+public class DeleteHDFS extends AbstractHadoopProcessor {
+public static final Relationship REL_SUCCESS = new 
Relationship.Builder()
+.name("success")
+.description("FlowFiles will be routed here if the delete 
command was successful")
+.build();
+
+public static final Relationship REL_FAILURE = new 
Relationship.Builder()
+.name("failure")
+.description("FlowFiles will be routed here if the delete 
command was unsuccessful")
+.build();
+
+public static final PropertyDescriptor FILE_OR_DIRECTORY = new 
PropertyDescriptor.Builder()
+.name("File or Directory")
+.description("The HDFS file or directory to delete. A wildcard 
expression may be used to only delete certain files")
+.required(true)
+.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+.expressionLanguageSupported(true)
+.build();
+
+public static final PropertyDescriptor RECURSIVE = new 
PropertyDescriptor.Builder()
+.name("Recursive")
+.description("Remove contents of a non-empty directory 
recursively")
+.allowableValues("true", "false")
+.required(true)
+.defaultValue("true")
+.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+.build();
+
+private static final Set relationships;
+
+static {
+final Set relationshipSet = new HashSet<>();
+relationshipSet.add(REL_SUCCESS);
+relationshipSet.add(REL_FAILURE);
+relationships = Collections.unmodifiableSet(relationshipSet);
+}
+
+@Override
+protected List getSupportedPropertyDescriptors() {
+List props = new ArrayList<>(properties);
+props.add(FILE_OR_DIRECTORY);
+props.add(RECURSIVE);

[GitHub] nifi pull request #850: NIFI-2547: Add DeleteHDFS Processor

[mattyb149]

Github user mattyb149 commented on a diff in the pull request:

https://github.com/apache/nifi/pull/850#discussion_r75044365
  
--- Diff: 
nifi-nar-bundles/nifi-hadoop-bundle/nifi-hdfs-processors/src/test/java/org/apache/nifi/processors/hadoop/TestDeleteHDFS.java
 ---
@@ -0,0 +1,187 @@
+/*
+ * 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.hadoop;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.hadoop.KerberosProperties;
+import org.apache.nifi.util.MockFlowFile;
+import org.apache.nifi.util.NiFiProperties;
+import org.apache.nifi.util.TestRunner;
+import org.apache.nifi.util.TestRunners;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.google.common.collect.Maps;
+
+public class TestDeleteHDFS {
+private NiFiProperties mockNiFiProperties;
+private FileSystem mockFileSystem;
+private KerberosProperties kerberosProperties;
+
+@Before
+public void setup() throws Exception {
+mockNiFiProperties = mock(NiFiProperties.class);
+
when(mockNiFiProperties.getKerberosConfigurationFile()).thenReturn(null);
+kerberosProperties = KerberosProperties.create(mockNiFiProperties);
+mockFileSystem = mock(FileSystem.class);
--- End diff --

Is it better to mock here or use the target/ area (since HDFS defaults to 
local FS) for file existence, deletion, etc.?


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[GitHub] nifi pull request #850: NIFI-2547: Add DeleteHDFS Processor

[mattyb149]

Github user mattyb149 commented on a diff in the pull request:

https://github.com/apache/nifi/pull/850#discussion_r75044228
  
--- Diff: 
nifi-nar-bundles/nifi-hadoop-bundle/nifi-hdfs-processors/src/main/java/org/apache/nifi/processors/hadoop/DeleteHDFS.java
 ---
@@ -0,0 +1,161 @@
+/*
+ * 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.hadoop;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.TriggerWhenEmpty;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+
+@TriggerWhenEmpty
+@InputRequirement(InputRequirement.Requirement.INPUT_ALLOWED)
+@Tags({ "hadoop", "HDFS", "delete", "remove", "filesystem" })
+@CapabilityDescription("Deletes a file from HDFS. The file can be provided 
as an attribute from an incoming FlowFile, "
++ "or a statically set file that is periodically removed. If this 
processor has an incoming connection, it"
++ "will ignore running on a periodic basis and instead rely on 
incoming FlowFiles to trigger a delete. "
++ "Optionally, you may specify use a wildcard character to match 
multiple files or directories.")
+public class DeleteHDFS extends AbstractHadoopProcessor {
+public static final Relationship REL_SUCCESS = new 
Relationship.Builder()
+.name("success")
+.description("FlowFiles will be routed here if the delete 
command was successful")
+.build();
+
+public static final Relationship REL_FAILURE = new 
Relationship.Builder()
+.name("failure")
+.description("FlowFiles will be routed here if the delete 
command was unsuccessful")
+.build();
+
+public static final PropertyDescriptor FILE_OR_DIRECTORY = new 
PropertyDescriptor.Builder()
+.name("File or Directory")
+.description("The HDFS file or directory to delete. A wildcard 
expression may be used to only delete certain files")
+.required(true)
+.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+.expressionLanguageSupported(true)
+.build();
+
+public static final PropertyDescriptor RECURSIVE = new 
PropertyDescriptor.Builder()
+.name("Recursive")
+.description("Remove contents of a non-empty directory 
recursively")
+.allowableValues("true", "false")
+.required(true)
+.defaultValue("true")
+.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+.build();
+
+private static final Set relationships;
+
+static {
+final Set relationshipSet = new HashSet<>();
+relationshipSet.add(REL_SUCCESS);
+relationshipSet.add(REL_FAILURE);
+relationships = Collections.unmodifiableSet(relationshipSet);
+}
+
+@Override
+protected List getSupportedPropertyDescriptors() {
+List props = new ArrayList<>(properties);
+props.add(FILE_OR_DIRECTORY);
+props.add(RECURSIVE);
+   

[GitHub] nifi pull request #850: NIFI-2547: Add DeleteHDFS Processor

[mattyb149]

Github user mattyb149 commented on a diff in the pull request:

https://github.com/apache/nifi/pull/850#discussion_r75044175
  
--- Diff: 
nifi-nar-bundles/nifi-hadoop-bundle/nifi-hdfs-processors/src/main/java/org/apache/nifi/processors/hadoop/DeleteHDFS.java
 ---
@@ -0,0 +1,161 @@
+/*
+ * 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.hadoop;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.TriggerWhenEmpty;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+
+@TriggerWhenEmpty
+@InputRequirement(InputRequirement.Requirement.INPUT_ALLOWED)
+@Tags({ "hadoop", "HDFS", "delete", "remove", "filesystem" })
+@CapabilityDescription("Deletes a file from HDFS. The file can be provided 
as an attribute from an incoming FlowFile, "
++ "or a statically set file that is periodically removed. If this 
processor has an incoming connection, it"
++ "will ignore running on a periodic basis and instead rely on 
incoming FlowFiles to trigger a delete. "
++ "Optionally, you may specify use a wildcard character to match 
multiple files or directories.")
+public class DeleteHDFS extends AbstractHadoopProcessor {
+public static final Relationship REL_SUCCESS = new 
Relationship.Builder()
+.name("success")
+.description("FlowFiles will be routed here if the delete 
command was successful")
+.build();
+
+public static final Relationship REL_FAILURE = new 
Relationship.Builder()
+.name("failure")
+.description("FlowFiles will be routed here if the delete 
command was unsuccessful")
+.build();
+
+public static final PropertyDescriptor FILE_OR_DIRECTORY = new 
PropertyDescriptor.Builder()
+.name("File or Directory")
--- End diff --

Not a requirement, but lately it's been suggested to use displayName() in 
the PropertyDescriptor.Builder() for the "friendly" name, and name() as 
something more machine friendly, as we move towards internationalization.


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[GitHub] nifi pull request #850: NIFI-2547: Add DeleteHDFS Processor

[rickysaltzer]

GitHub user rickysaltzer opened a pull request:

https://github.com/apache/nifi/pull/850

NIFI-2547: Add DeleteHDFS Processor

This processor adds the capability to delete files or
directories inside of HDFS.

Paths supports both static and expression language values,
as well as glob support (e.g. /data/for/2016/07/*).

This processor may be used standalone, as well as part of a
downstream connection.

You can merge this pull request into a Git repository by running:

$ git pull https://github.com/rickysaltzer/nifi NIFI-2547

Alternatively you can review and apply these changes as the patch at:

https://github.com/apache/nifi/pull/850.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

This closes #850


commit d42fe48779eefbdfe936f2b3745b7eed1fe31d6e
Author: ricky 
Date:   2016-08-10T23:14:39Z

NIFI-2547: Add DeleteHDFS Processor

This processor adds the capability to delete files or
directories inside of HDFS.

Paths supports both static and expression language values,
as well as glob support (e.g. /data/for/2016/07/*).

This processor may be used standalone, as well as part of a
downstream connection.




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