I just wrote a script to build Android on another machine

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2017-06-21 It is cooler to use this. gojuno / mainframer: Tool for remote builds . Sync project to remote machine, execute command, sync back . 2016-11-21 23:44 Supports testing 2016-11-14 13:12 Addition of execution method in the cloud

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Android has a heavy build. Since the CPU is 100%, the development machine cannot be used during that time. Build on another machine.

problem

Slow, slow, Android Studio build is slow. If you start building for the time being, it will be like this. This continues for this long During this time, you cannot enter the code in Android Studio. You can't browse. I have no choice but to read a book. Thanks to that, Tsundoku has decreased. But the delivery date is coming.

It can't be helped that the build is heavy. There is no choice but to leave it to Google. At least while building

• Read other sources
• Write a comment
• Browsing

I want to secure that time alone. Instead of accelerating the build, I focused on preventing the CPU resources of the development machine from being consumed during the build.

Heavy cause

• Developed by kotlin
• Automatic source code generation tools such as Dagger2 and DBFlow
• Obfuscation by ProGuard
• See common module

Various things such as etc. overlapped and the build became heavier day by day. I think.

Countermeasure 1 Use Android Studio Plugin by volunteers

Building with Android Studio in the cloud to speed up development --Unyablog. This popular article will solve it! I tried it with, but it stopped working in Android Studio 2.2 ... Can I use 2.2 with a little tinkering? I thought, but I didn't understand at all ...

Countermeasure 2 Make sure that the development machine is not occupied because it does not have to be faster.

But this mechanism, you don't have to force it in Android Studio, you can use the shell. I thought it would be nice to use python fabric, so I made it. Also, since it costs money, I decided to build with mac mini because I had a surplus instead of the cloud.

Run on your PC

I wrote a script! https://gist.github.com/shikajiro/90cdbdac652cf37a563840d812d73c5b

Run in the cloud

@sys1yagi Seems to have built it on Google's cloud GCE. Onome Build an Android application with an instance of Google Compute Engine

Installation

1. Put the above script file in the root directory of your project
2. Set the ip address of another machine to build.
3. Set the module name, flavor name, and debug status of the application to be built.
4. Create an environment where you can build on another machine 5-1. $ fab build works like a normal build. After compiling and installing, Activity starts. You can also test with 5-2. $ fab test. The result is displayed in the browser. You can also $ fab android_test, $ fab test_all.

Script flow

1. Copy the code under development to another free machine.
2. Build on another machine.
3. Bring the apk built from another machine and install it.
4. Launch the app.

Measurement result

I measured the time it takes more than a normal build.

environment

Execution time

• Source code synchronization: Over 2 seconds (3 modified text files)
• Download apk file ・ ・ ・ Over 12 seconds (8MB) If the build time exceeds a minute, I think it is acceptable.

Next, I tried tethering with LTE.

environment

Execution time

• Source code synchronization: Over 3 seconds (3 modified text files)
• Download apk file ・ ・ ・ Over 33 seconds (8MB)

After all apk download is slow. If you want speed, you should refrain from it. But it's great not to use the battery on the go! !!