[JAVA] I tried to create a plug-in with HULFT IoT Edge Streaming [Execution] (3/3)

Introduction

Hello. Yorozu Counselor Sugimon: yum :. This time, I will try to develop a component (adapter) using the SDK of HULFT IoT Edge Streaming. It is described so that it will be completed in all three parts.

What to do this time

This time, as the third step, I will try to build and execute the plug-in developed with the HULFT IoT EdgeStreaming Plugin SDK. The first and second articles are below, so please refer to them.

: arrow_forward: [I tried to create a plug-in with HULFT IoT Edge Streaming Setup] (https://qiita.com/sugimon/items/cf7503479c6e4c46c3b3) : arrow_forward: [I tried to create a plug-in with HULFT IoT Edge Streaming Development](https://qiita.com/sugimon/items/67bdd6f610e03cdfcef2) : arrow_forward: I tried to create a plug-in with HULFT IoT Edge Streaming Execution

Build plugin

This time, let's build the created plug-in. * I am trying using a Windows PC. In addition, it should be noted $ SDK_HOME points to the EdgeStreaming SDK home directory. $ DATASPIDER_HOME points to the Edge Streaming home directory.

Build

To build the plugin, execute the following command from $ SDK_HOME / dev / sample_adapter.

$ ant

After executing the command, BUILD SUCCESSFUL is output, and if the following files are created, the build is successful.

・ $ SDK_HOME / dev / sample_adapter / build 　sample_adapter.jar ・ $ SDK_HOME / dev / sample_adapter / build / plugin / sample_plugin Go executable for each target

Copy icon file

Create an icon file that will actually be used on the Edge Streaming Studio screen. After a successful build, $ SDK_HOME / dev / sample_adapter / META-INF will be generated, so copy the sample file of the icon and rename it.

-Copy of Icon for Source Operation $SDK_HOME/dev/conf/operation.source.icon ⇒　$SDK_HOME/dev/sample_adapter/META-INF/operation.sample_source.icon

-Copy of icon for Sink Operation $SDK_HOME/dev/conf/operation.sink.icon ⇒　$SDK_HOME/dev/sample_adapter/META-INF/operation.sample_sink.icon

-Copy of UDSF Operation icon $SDK_HOME/dev/conf/operation.udsf.icon ⇒　$SDK_HOME/dev/sample_adapter/META-INF/operation.sample_udsf.icon

Check the module.properties file

Confirm that the $ SDK_HOME / dev / sample_adapter / META-INF / module.properties file was created successfully.

This properties file is based on the properties defined in the $ SDK_HOME / dev / sample_adapter / config.properties file.

Plugin installation

To install the adapter, specify the install target as the first argument of the ant command from $ SDK_HOME / dev / sample_adapter.

$ ant install

After executing ant install, it will be installed as follows. -The Java module will be installed. Under $ DATASPIDER_HOME / server / plugin / data_processing / modules

-The Golang module will be installed. Under $ DATASPIDER_HOME / server / es-agent / plugin

• Edge Streaming Studio needs to be restarted for the installed plug-in to take effect.

Let's run

Now, let's execute the created plug-in.

Launch Edge Streaming

-Start Edge Streaming.

・ Let's check the created plug-in. Create a project from a new project.

Create a script.

Check the plugin

Confirm that the created plug-in is created in the "Tool Palette". I think that the following plug-ins are created under "Sample" in the "Tool Palette".

Let's create a simple process

**-Input processing (operation to generate pseudo-random numbers at regular time intervals) ** Place the process created by Source Operation. Drag and drop Sample source from Sample on the tool palette to move it to the center.

• For Interval, specify the acquisition interval.

**-Output processing (operation to truncate to the number of valid decimal places and output to the log) ** Place the process created by Sample Sink. Drag and drop the Sample sink from Sample on the tool palette to move it to the center.

• Specify any number of decimal places for Decimal.

** Mapping process ** Drag and drop the input processing icon to connect the icon to the output processing. Right-click on the connected line and select Add Mapping.

Open the mapping icon.

-Connect the input source "value" and the output destination "value". -Place the tool palette-> character string-> basic-> character string constant in the output destination "formula", Specify any character string and connect it to "formula".

** entire script ** You have created a script like this.

Let's run

Let's execute the script created from the green arrow on the screen menu.

You can see that pseudo-random numbers are generated for each specified interval and the value is output with the specified number of decimal places.

Also, by using the created UDSF operation icon, you can perform four arithmetic operations on the acquired value. Please combine and try various things.

Finally

As the final part of the trilogy, this time I tried to build and execute the plugin. In this way, it is possible to implement plug-in processing using the SDK. I hope this article will guide you in the development of plugins.

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