Gradle 统计build 任务的时长

电玩女神 2022-08-31 15:13 165阅读 0赞

#### 一、背景 ####

最近想提高一下项目的编译速度,首先做的就是记录一下每次编译的耗时,来方便优化前后做对比。

#### 二、方案 ####

思路很简单,监控每个task的耗时,连同版本信息一起记录在文件里,每次编译会产生一个编译耗时记录文件。

#### 三、代码实现 ####

import java.text.SimpleDateFormat
     
    /** * 监控构建耗时 * * 记录构建过程中的每个任务的耗时，并写入文件中 .build_history/buildTimeLog_yy_MM_dd_HH_mm_ss.log中 */
     
    class BuildTimeListener implements TaskExecutionListener, BuildListener { 
        private final String BUILD_LOG_FILE_DIR = ".build_history"
        private final String BUILD_LOG_FILE_PATH = "buildTimeLog"
        private long taskStartTime;
        private long buildStartTime;
        private int taskCounts = 0;
        private StringBuilder sb = new StringBuilder()
        private SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
        private SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss")
     
        BuildTimeListener() { 
            buildStartTime = System.currentTimeMillis()
            //添加一些版本信息
            sb.append("codeTag:").append(ProjectConfig.codeTag).append("\n")
            sb.append("branch:").append(ProjectConfig.branch).append("\n")
            sb.append("versionName:").append(ProjectConfig.versionName).append("\n")
            sb.append("versionCode:").append(ProjectConfig.versionCode).append("\n")
            sb.append("构建时间：" + sdf.format(new Date()) + "\n")
            sb.append("开始构建----------------------\n")
        }
     
        @Override
        void buildStarted(Gradle gradle) { 
     
        }
     
        @Override
        void settingsEvaluated(Settings settings) { 
     
        }
     
        @Override
        void projectsLoaded(Gradle gradle) { 
     
        }
     
        @Override
        void projectsEvaluated(Gradle gradle) { 
     
        }
     
        /** * 构建完成回调 * @param result The result of the build. Never null. */
        @Override
        void buildFinished(BuildResult result) { 
            if(taskCounts<5) return
            long buildCost = System.currentTimeMillis() - buildStartTime
            sb.append("构建结束----------------------\n")
            sb.append("构建总耗时：" + buildCost + "ms")
            //输出到文件
            String text = sb.toString()
            writeToFile(BUILD_LOG_FILE_PATH, text)
        }
     
        /** * 任务执行开始 * @param task The task about to be executed. Never null. */
        @Override
        void beforeExecute(Task task) { 
            taskStartTime = System.currentTimeMillis();
        }
     
        /** * 任务执行结束 * @param task The task which was executed. Never null. * @param state The task state. If the task failed with an exception, the exception is available in this */
        @Override
        void afterExecute(Task task, TaskState state) { 
            long cost = System.currentTimeMillis() - taskStartTime;
            System.out.println("任务：" + task.name + "," + task.path + ",耗时：" + cost);
            sb.append("[" + task.path + "]:" + cost + "ms\n")
            taskCounts++
        }
     
        private void writeToFile(String fname, String text) { 
            File dir = new File(BUILD_LOG_FILE_DIR)
            if (!dir.exists()) { 
                dir.mkdir()
            }
            File file = new File(BUILD_LOG_FILE_DIR + File.separator + fname + "_" + sdf2.format(new Date()) + ".log")
            file.write(text, true)
        }
    }
     
    gradle.addListener new BuildTimeListener()

使用时将文件放在app目录下,然后在app/build.gradle中添加引用:

apply from: "./buildTrace.gradle"

打包时,会在项目中生成编译历史文件,如下:  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjYwMDM5OA_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjYwMDM5OA_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjYwMDM5OA_size_16_color_FFFFFF_t_70]: /images/20220829/96de077b12954f84af6cb12e8d4cc12d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjYwMDM5OA_size_16_color_FFFFFF_t_70 1]: /images/20220829/1005aebbdb494f15acf7de172a7c0c0a.png