android-gradle-logger

some-root.gradle

gradle.taskGraph.afterTask { task, state ->
    if (task. state.failure) {
        println "$task.name FAILED PRINTING LOGS"
        getDevicesAndReadLogs(500)
    }
}

ext.getDevicesAndReadLogs = { count = 2500 ->
    try {
        def outstream = new ByteArrayOutputStream()
        exec {
            executable "sh"
            workingDir '.'
            args "-c", "adb devices -l"
            standardOutput = outstream
        }

        outstream.toString().split("\n").each {
            if (!it.contains("List of devices")) {
                def parts = it.split(" ");
                readTestLogs(parts[0], count);
            }
        }
    } catch (Exception ex) {
        println("Failed to do getDevicesAndReadLogs because of: " + ex)
    }
}

ext.readTestLogs = { device, count ->
    try {
        def outstream = new ByteArrayOutputStream()
        exec {
            executable "sh"
            workingDir '.'
            args "-c", "adb -s " + device + " shell logcat -n " + count + " -d '*:E'"
            standardOutput = outstream
        }

        outstream.toString().split("\n").each {
            println(it);
        }
    } catch (Exception ex) {
        println("Failed to read log for " + device + " because of: " + ex)
    }
}