nifi-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From JPercivall <...@git.apache.org>
Subject [GitHub] nifi pull request #349: NIFI-1767 AWS IoT processors
Date Wed, 01 Jun 2016 18:52:38 GMT
Github user JPercivall commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/349#discussion_r65420794
  
    --- Diff: nifi-nar-bundles/nifi-aws-bundle/nifi-aws-processors/src/main/java/org/apache/nifi/processors/aws/iot/PutAWSIoT.java
---
    @@ -0,0 +1,141 @@
    +/*
    + * 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 org.apache.nifi.annotation.behavior.InputRequirement;
    +import org.apache.nifi.annotation.behavior.ReadsAttribute;
    +import org.apache.nifi.annotation.behavior.ReadsAttributes;
    +import org.apache.nifi.annotation.behavior.WritesAttributes;
    +import org.apache.nifi.annotation.behavior.WritesAttribute;
    +import org.apache.nifi.annotation.documentation.CapabilityDescription;
    +import org.apache.nifi.annotation.documentation.SeeAlso;
    +import org.apache.nifi.annotation.documentation.Tags;
    +import org.apache.nifi.annotation.lifecycle.OnScheduled;
    +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.util.StandardValidators;
    +import org.eclipse.paho.client.mqttv3.MqttException;
    +
    +import java.io.ByteArrayOutputStream;
    +import java.util.Arrays;
    +import java.util.Collections;
    +import java.util.List;
    +import java.util.Set;
    +import java.util.Map;
    +
    +@Tags({"Amazon", "AWS", "IOT", "MQTT", "Websockets", "Put", "Publish", "Send"})
    +@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED)
    +@CapabilityDescription("Publishes messages to MQTT-topic(s) of AWS IoT. The processor
keeps open a WebSocket connection and will automatically renew the " +
    +        "connection to overcome Amazon's service limit on maximum connection duration.
Most of the " +
    +        "configuration can be overridden by values coming in as message attributes. This
applies for " +
    +        "the topic (corresponding message attribute is \"aws.iot.mqtt.topic.override\"),
the qos-level " +
    +        "(\"aws.iot.mqtt.qos.override\") and the retention (\"aws.iot.mqtt.retained.override\")")
    +@SeeAlso({ PutAWSIoTShadow.class })
    +@ReadsAttributes({
    +        @ReadsAttribute(attribute = "aws.iot.mqtt.topic.override", description = "Overrides
the processor configuration for topic."),
    +        @ReadsAttribute(attribute = "aws.iot.mqtt.qos.override", description = "Overrides
the processor configuration for quality of service."),
    +        @ReadsAttribute(attribute = "aws.iot.mqtt.retained.override", description = "Overrides
the processor configuration for retaining a published state in the AWS shadow.")
    +})
    +@WritesAttributes({
    +        @WritesAttribute(attribute = "aws.iot.mqtt.exception", description = "Error details")
    +})
    +public class PutAWSIoT extends AbstractAWSIoTProcessor {
    +    private final static String PROP_NAME_RETAINED = "aws.iot.mqtt.retained";
    +    private final static String ATTR_NAME_TOPIC = PROP_NAME_TOPIC + ".override";
    +    private final static String ATTR_NAME_QOS = PROP_NAME_QOS + ".override";
    +    private final static String ATTR_NAME_RETAINED = PROP_NAME_RETAINED + ".override";
    +    private final static String ATTR_NAME_EXCEPTION = "aws.iot.mqtt.exception";
    +    private final static Boolean PROP_DEFAULT_RETAINED = false;
    +    private Boolean shouldRetain;
    +
    +    public static final PropertyDescriptor PROP_RETAINED = new PropertyDescriptor
    +            .Builder().name(PROP_NAME_RETAINED)
    +            .description("For messages being published, a true setting indicates that
the MQTT server " +
    +                    "should retain a copy of the message. The message will then be transmitted
to new " +
    +                    "subscribers to a topic that matches the message topic. For subscribers
registering " +
    +                    "a new subscription, the flag being true indicates that the received
message is not " +
    +                    "a new one, but one that has been retained by the MQTT server.")
    +            .required(true)
    +            .defaultValue(PROP_DEFAULT_RETAINED.toString())
    +            .addValidator(StandardValidators.BOOLEAN_VALIDATOR)
    +            .build();
    +
    +    public static final List<PropertyDescriptor> properties = Collections.unmodifiableList(
    +            Arrays.asList(
    +                    PROP_QOS,
    +                    PROP_TOPIC,
    +                    PROP_RETAINED,
    +                    PROP_ENDPOINT,
    +                    PROP_KEEPALIVE,
    +                    PROP_CLIENT,
    +                    AWS_CREDENTIALS_PROVIDER_SERVICE,
    +                    TIMEOUT,
    +                    REGION));
    +
    +    @Override
    +    protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
    +        return properties;
    +    }
    +
    +    @Override
    +    public Set<Relationship> getRelationships() {
    +        return Collections.singleton(REL_SUCCESS);
    --- End diff --
    
    Only the success relationship is exposed, should also include the failure relationship.


---
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 infrastructure@apache.org or file a JIRA ticket
with INFRA.
---

Mime
View raw message