Issue 50 (#51)

* Partial support for ELF. #50

* Full support for ELF. Added InputFileDeque the number of calls to list the directory contents. This will query only when needed to reduce the number of stat calls.

Author: jcustenborder

.gitignore

@@ -1,3 +1,4 @@
 target
 *.iml
 .okhttpcache
+ELFTesting.properties

bin/debug.sh

@@ -6,7 +6,7 @@
 # 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
+# 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,
@@ -18,25 +18,24 @@
 : ${INPUT_PATH:='/tmp/spooldir/input'}
 : ${ERROR_PATH:='/tmp/spooldir/error'}
 : ${FINISHED_PATH:='/tmp/spooldir/finished'}
-: ${DEBUG_SUSPEND_FLAG:='n'}
-export KAFKA_DEBUG='y'
-
+: ${DEBUG_SUSPEND_FLAG:='y'}
+export KAFKA_DEBUG='n'
+export KAFKA_OPTS='-agentpath:/Applications/YourKit-Java-Profiler-2017.02.app/Contents/Resources/bin/mac/libyjpagent.jnilib=disablestacktelemetry,exceptions=disable,delay=10000'
 set -e
 
 mvn clean package
 
-if [ ! -d "${INPUT_PATH}" ]; then
-    mkdir -p "${INPUT_PATH}"
-fi
-
-if [ ! -d "${ERROR_PATH}" ]; then
-    mkdir -p "${ERROR_PATH}"
-fi
+#if [ ! -d "${INPUT_PATH}" ]; then
+#    mkdir -p "${INPUT_PATH}"
+#fi
 
-if [ ! -d "${FINISHED_PATH}" ]; then
-    mkdir -p "${FINISHED_PATH}"
-fi
+#if [ ! -d "${ERROR_PATH}" ]; then
+#    mkdir -p "${ERROR_PATH}"
+#fi
 
-cp src/test/resources/com/github/jcustenborder/kafka/connect/spooldir/csv/FieldsMatch.data "${INPUT_PATH}/FieldsMatch.csv"
+#if [ ! -d "${FINISHED_PATH}" ]; then
+#    mkdir -p "${FINISHED_PATH}"
+#fi
 
-connect-standalone config/connect-avro-docker.properties config/CSVExample.properties
+#cp src/test/resources/com/github/jcustenborder/kafka/connect/spooldir/csv/FieldsMatch.data "${INPUT_PATH}/FieldsMatch.csv
+connect-standalone config/connect-avro-docker.properties config/ELFTesting.properties

config/CSVExample.properties

@@ -5,7 +5,7 @@
 # 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
+# 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,

config/ELFTesting.properties

@@ -0,0 +1,26 @@
+#
+# Copyright © 2016 Jeremy Custenborder ([email protected])
+#
+# 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.
+#
+
+name=elftesting
+tasks.max=1
+connector.class=com.github.jcustenborder.kafka.connect.spooldir.elf.SpoolDirELFSourceConnector
+input.file.pattern=^.*\.gz$
+finished.path=/Users/jeremy/data/confluent/logs/packages/finished
+input.path=/Users/jeremy/data/confluent/logs/packages
+error.path=/Users/jeremy/data/confluent/logs/packages/error
+halt.on.error=true
+topic=cloudfront
+schema.generation.enabled=true

config/connect-avro-docker.properties

@@ -5,7 +5,7 @@
 # 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
+# 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,
@@ -14,14 +14,14 @@
 # limitations under the License.
 #
 
-bootstrap.servers=confluent:9092
+bootstrap.servers=kafka:9092
 key.converter=io.confluent.connect.avro.AvroConverter
-key.converter.schema.registry.url=http://confluent:8081
+key.converter.schema.registry.url=http://schema-registry:8081
 value.converter=io.confluent.connect.avro.AvroConverter
-value.converter.schema.registry.url=http://confluent:8081
+value.converter.schema.registry.url=http://schema-registry:8081
 internal.key.converter=org.apache.kafka.connect.json.JsonConverter
 internal.value.converter=org.apache.kafka.connect.json.JsonConverter
 internal.key.converter.schemas.enable=false
 internal.value.converter.schemas.enable=false
 offset.storage.file.filename=/tmp/connect.offsets
-plugin.path=target/kafka-connect-target/usr/share/java
+plugin.path=target/kafka-connect-target/usr/share/kafka-connect

docker-compose.yml

@@ -5,7 +5,7 @@
 # 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
+# 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,
@@ -17,22 +17,23 @@
 version: "2"
 services:
   zookeeper:
-    image: confluentinc/cp-zookeeper:3.3.0
+    image: confluentinc/cp-zookeeper:4.1.0
     ports:
       - "2181:2181"
     environment:
       ZOOKEEPER_CLIENT_PORT: 2181
   kafka:
-    image: confluentinc/cp-kafka:3.3.0
+    image: confluentinc/cp-kafka:4.1.0
     depends_on:
       - zookeeper
     ports:
       - "9092:9092"
     environment:
       KAFKA_ZOOKEEPER_CONNECT: "zookeeper:2181"
-      KAFKA_ADVERTISED_LISTENERS: "plaintext://confluent:9092"
+      KAFKA_ADVERTISED_LISTENERS: "plaintext://kafka:9092"
+      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
   schema-registry:
-    image: confluentinc/cp-schema-registry:3.3.0
+    image: confluentinc/cp-schema-registry:4.1.0
     depends_on:
       - kafka
       - zookeeper

pom.xml

@@ -1,4 +1,21 @@
 <?xml version="1.0"?>
+<!--
+
+    Copyright © 2016 Jeremy Custenborder ([email protected])
+
+    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.
+
+-->
 <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
          xmlns="http://maven.apache.org/POM/4.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
@@ -57,6 +74,11 @@
             <artifactId>commons-compress</artifactId>
             <version>1.16.1</version>
         </dependency>
+        <dependency>
+            <groupId>com.github.jcustenborder.parsers</groupId>
+            <artifactId>extended-log-format</artifactId>
+            <version>[0.0.1.2, 0.0.1.1000)</version>
+        </dependency>
     </dependencies>
     <build>
         <plugins>

src/main/java/com/github/jcustenborder/kafka/connect/spooldir/InputFileDequeue.java

@@ -0,0 +1,90 @@
+/**
+ * Copyright © 2016 Jeremy Custenborder ([email protected])
+ *
+ * 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 com.github.jcustenborder.kafka.connect.spooldir;
+
+import com.google.common.collect.ForwardingDeque;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.util.ArrayDeque;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.Deque;
+import java.util.List;
+
+public class InputFileDequeue extends ForwardingDeque<File> {
+  private static final Logger log = LoggerFactory.getLogger(InputFileDequeue.class);
+  private final SpoolDirSourceConnectorConfig config;
+
+  public InputFileDequeue(SpoolDirSourceConnectorConfig config) {
+    this.config = config;
+  }
+
+  public static File processingFile(String processingFileExtension, File input) {
+    String fileName = input.getName() + processingFileExtension;
+    return new File(input.getParentFile(), fileName);
+  }
+
+
+  Deque<File> files;
+
+  @Override
+  protected Deque<File> delegate() {
+    if (null != files && !files.isEmpty()) {
+      return files;
+    }
+
+    log.info("Searching for file in {}", this.config.inputPath);
+    File[] input = this.config.inputPath.listFiles(this.config.inputFilenameFilter);
+    if (null == input || input.length == 0) {
+      log.info("No files matching {} were found in {}", SpoolDirSourceConnectorConfig.INPUT_FILE_PATTERN_CONF, this.config.inputPath);
+      return new ArrayDeque<>();
+    }
+    Arrays.sort(input, Comparator.comparing(File::getName));
+    List<File> files = new ArrayList<>(input.length);
+    for (File f : input) {
+      File processingFile = processingFile(this.config.processingFileExtension, f);
+      log.trace("Checking for processing file: {}", processingFile);
+
+      if (processingFile.exists()) {
+        log.debug("Skipping {} because processing file exists.", f);
+        continue;
+      }
+      files.add(f);
+    }
+
+    Deque<File> result = new ArrayDeque<>(files.size());
+
+    for (File file : files) {
+      long fileAgeMS = System.currentTimeMillis() - file.lastModified();
+
+      if (fileAgeMS < 0L) {
+        log.warn("File {} has a date in the future.", file);
+      }
+
+      if (this.config.minimumFileAgeMS > 0L && fileAgeMS < this.config.minimumFileAgeMS) {
+        log.debug("Skipping {} because it does not meet the minimum age.", file);
+        continue;
+      }
+      result.add(file);
+    }
+
+    log.info("Found {} file(s) to process", result.size());
+    return (this.files = result);
+  }
+}

src/main/java/com/github/jcustenborder/kafka/connect/spooldir/SpoolDirCsvSourceConnectorConfig.java

@@ -64,10 +64,12 @@ class SpoolDirCsvSourceConnectorConfig extends SpoolDirSourceConnectorConfig {
 
   static final String CSV_SKIP_LINES_DOC = "Number of lines to skip in the beginning of the file.";
   static final int CSV_SKIP_LINES_DEFAULT = CSVReader.DEFAULT_SKIP_LINES;
-  static final String CSV_SEPARATOR_CHAR_DOC = "The character that seperates each field. Typically in a CSV this is a , character. A TSV would use \\t.";
+  static final String CSV_SEPARATOR_CHAR_DOC = "The character that separates each field in the form " +
+      "of an integer. Typically in a CSV this is a ,(44) character. A TSV would use a tab(9) character.";
   static final int CSV_SEPARATOR_CHAR_DEFAULT = (int) CSVParser.DEFAULT_SEPARATOR;
   static final int CSV_QUOTE_CHAR_DEFAULT = (int) CSVParser.DEFAULT_QUOTE_CHARACTER;
-  static final String CSV_ESCAPE_CHAR_DOC = "Escape character.";
+  static final String CSV_ESCAPE_CHAR_DOC = "The character as an integer to use when a special " +
+      "character is encountered. The default escape character is typically a \\(92)";
   static final int CSV_ESCAPE_CHAR_DEFAULT = (int) CSVParser.DEFAULT_ESCAPE_CHARACTER;
   static final String CSV_STRICT_QUOTES_DOC = "Sets the strict quotes setting - if true, characters outside the quotes are ignored.";
   static final boolean CSV_STRICT_QUOTES_DEFAULT = CSVParser.DEFAULT_STRICT_QUOTES;
@@ -288,6 +290,11 @@ public CSVReaderBuilder createCSVReaderBuilder(Reader reader, CSVParser parser)
         .withFieldAsNull(nullFieldIndicator);
   }
 
+  @Override
+  public boolean schemasRequired() {
+    return true;
+  }
+
   static class CharsetValidator implements ConfigDef.Validator {
     static CharsetValidator of() {
       return new CharsetValidator();

src/main/java/com/github/jcustenborder/kafka/connect/spooldir/SpoolDirCsvSourceTask.java

@@ -1,12 +1,12 @@
 /**
  * Copyright © 2016 Jeremy Custenborder ([email protected])
- * <p>
+ *
  * 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
- * <p>
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
- * <p>
+ *
  * 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.