Github user KayLerch commented on a diff in the pull request:
https://github.com/apache/nifi/pull/349#discussion_r65421228
--- Diff:
nifi-nar-bundles/nifi-aws-bundle/nifi-aws-processors/src/main/java/org/apache/nifi/processors/aws/iot/AbstractAWSIoTProcessor.java
---
@@ -0,0 +1,230 @@
+/*
+ * 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.aws.iot;
+
+import com.amazonaws.ClientConfiguration;
+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.AWSCredentialsProvider;
+import com.amazonaws.services.iot.AWSIotClient;
+import org.apache.commons.lang3.RandomStringUtils;
+import org.apache.nifi.annotation.lifecycle.OnStopped;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.util.StandardValidators;
+import
org.apache.nifi.processors.aws.AbstractAWSCredentialsProviderProcessor;
+import org.apache.nifi.processors.aws.iot.util.AWS4Signer;
+import org.apache.nifi.processors.aws.iot.util.MqttWebSocketAsyncClient;
+import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
+import org.eclipse.paho.client.mqttv3.MqttException;
+
+import java.util.Date;
+import java.util.concurrent.TimeUnit;
+
+public abstract class AbstractAWSIoTProcessor extends
AbstractAWSCredentialsProviderProcessor<AWSIotClient> {
+ static final String PROP_NAME_ENDPOINT = "aws.iot.endpoint";
+ static final String PROP_NAME_CLIENT = "aws.iot.mqtt.client";
+ static final String PROP_NAME_KEEPALIVE = "aws.iot.mqtt.keepalive";
+ static final String PROP_NAME_TOPIC = "aws.iot.mqtt.topic";
+ static final String PROP_NAME_QOS = "aws.iot.mqtt.qos";
+ /**
+ * Amazon's current service limit on websocket connection duration
+ */
+ static final Integer PROP_DEFAULT_KEEPALIVE = 60 * 60 * 24;
+ /**
+ * When to start indicating the need for connection renewal (in
seconds before actual termination)
+ */
+ static final Integer
DEFAULT_CONNECTION_RENEWAL_BEFORE_KEEP_ALIVE_EXPIRATION = 20;
+ static final String PROP_DEFAULT_CLIENT =
AbstractAWSIoTProcessor.class.getSimpleName();
+ /**
+ * Default QoS level for message delivery
+ */
+ static final Integer DEFAULT_QOS = 0;
+ String awsTopic;
+ int awsQos;
+ MqttWebSocketAsyncClient mqttClient;
+ String awsEndpoint;
+ String awsClientId;
+
+ private String awsRegion;
+ private Integer awsKeepAliveSeconds;
+ private Date dtLastConnect;
+
+ public static final PropertyDescriptor PROP_ENDPOINT = new
PropertyDescriptor
+ .Builder().name(PROP_NAME_ENDPOINT)
+ .description("Your endpoint identifier in AWS IoT (e.g.
A1B71MLXKNCXXX)")
+ .required(true)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .build();
+
+ public static final PropertyDescriptor PROP_CLIENT = new
PropertyDescriptor
+ .Builder().name(PROP_NAME_CLIENT)
+ .description("MQTT client ID to use. Under the cover your
input will be extended by a random " +
+ "string to ensure a unique id among all conntected
clients.")
+ .required(false)
+ .defaultValue(PROP_DEFAULT_CLIENT)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .build();
+
+ public static final PropertyDescriptor PROP_KEEPALIVE = new
PropertyDescriptor
+ .Builder().name(PROP_NAME_KEEPALIVE)
+ .description("Seconds a WebSocket-connection remains open
after automatically renewing it. " +
+ "This is neccessary due to Amazon's service limit on
WebSocket connection duration. " +
+ "As soon as the limit is changed by Amazon you can
adjust the value here. Never use " +
+ "a duration longer than supported by Amazon. This
processor renews the connection " +
+ "" +
DEFAULT_CONNECTION_RENEWAL_BEFORE_KEEP_ALIVE_EXPIRATION + " seconds before the
" +
+ "actual expiration. If no value set the default will
be " + PROP_DEFAULT_KEEPALIVE + ".")
+ .required(false)
+ .defaultValue(PROP_DEFAULT_KEEPALIVE.toString())
+ .addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR)
+ .build();
+
+ public static final PropertyDescriptor PROP_TOPIC = new
PropertyDescriptor
+ .Builder().name(PROP_NAME_TOPIC)
+ .description("MQTT topic to work with. (pattern:
$aws/things/mything/shadow/update).")
+ .required(true)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .build();
+
+ public static final PropertyDescriptor PROP_QOS = new
PropertyDescriptor
+ .Builder().name(PROP_NAME_QOS)
+ .description("Decide for at most once (0) or at least once (1)
message-receiption. " +
+ "Currently AWS IoT does not support QoS-level 2. If no
value set the default QoS " +
+ "is " + DEFAULT_QOS + ".")
+ .required(false)
+ .allowableValues("0", "1")
+ .defaultValue("0")
--- End diff --
Have it. Just forgot ;)
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
