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How to use Instrumentator class of org.evomaster.client.java.instrumentation package

Best EvoMaster code snippet using org.evomaster.client.java.instrumentation.Instrumentator

Source:InstrumentingAgent.java

...25     * WARN: static variable with dynamic state.26     * Forced to use it due to very special nature of how27     * JavaAgents are handled28     */29    private static Instrumentator instrumentator;30    private static String packagePrefixesToCover;31    private static boolean active = false;32    /**33     * This is called to init the JavaAgent when starting a new JVM, eg34     * the config of JavaAgent is passed by command line when the JVM starts.35     *36     * @param args37     * @param inst38     */39    public static void premain(String args, Instrumentation inst) {40        agentmain(args, inst);41    }42    /**43     * Actual method that is going to be called when the JavaAgent is started.44     * This is called to init the JavaAgent when attached to an already running JVM.45     *46     * @param agentArgs in this case, the {@code packagePrefixesToCover}47     * @param inst48     */49    public static void agentmain(String agentArgs, Instrumentation inst) {50        packagePrefixesToCover = agentArgs;51        instrumentator = new Instrumentator(packagePrefixesToCover);52        inst.addTransformer(new TransformerForTests());53        active = true;54        String port = System.getProperty(InputProperties.EXTERNAL_PORT_PROP);55        if (port != null) {56            SimpleLogger.info("Starting remote instrumenting Agent for packages: " + agentArgs);57            AgentController.start(Integer.parseInt(port));58        }59        String sqlDriver = System.getProperty(InputProperties.SQL_DRIVER);60        if (sqlDriver != null) {61            SimpleLogger.info("Initializing P6SPY with base driver " + sqlDriver);62            initP6Spy(sqlDriver);63        }64        String outputFile = System.getProperty(InputProperties.OUTPUT_FILE);65        if(outputFile != null){66            Runtime.getRuntime().addShutdownHook(new Thread(() -> {67                saveCoverageToDisk(outputFile);68            }));69        }70    }71    private static void saveCoverageToDisk(String outputFile) {72        try {73            SimpleLogger.info("Going to save coverage data to " + outputFile);74            ClassScanner.forceLoading(packagePrefixesToCover);75            Path path = Paths.get(outputFile);76            Files.deleteIfExists(path);77            Files.createFile(path);78            PrintWriter writer = new PrintWriter(outputFile, "UTF-8");79            ObjectiveRecorder.printCoveragePerTarget(writer);80            writer.close();81        } catch (IOException e) {82            SimpleLogger.error("Failed to save data to disk: "+e.getMessage());83            throw new RuntimeException(e);84        }85    }86    public static boolean isActive() {87        return active;88    }89    public static void changePackagesToInstrument(String packagePrefixesToCover) {90        instrumentator = new Instrumentator(packagePrefixesToCover);91    }92    public static void initP6Spy(String driver) {93        Objects.requireNonNull(driver);94        //see http://p6spy.readthedocs.io/en/latest/configandusage.html95        System.setProperty("p6spy.config.driverlist", driver);96        System.setProperty("p6spy.config.filter", "true");97        System.setProperty("p6spy.config.include", "select,insert,update,delete");98        System.setProperty("p6spy.config.autoflush", "true");99        System.setProperty("p6spy.config.appender", "com.p6spy.engine.spy.appender.StdoutLogger");100        System.setProperty("p6spy.config.jmx", "false");101        /*102            Note: this is a reference to a class in another module, although103            this module does NOT (and should not) reference it.104            Long story... see documentation on how P6Spy is used in EM....

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