Examples of org.rhq.core.util.PropertiesFileUpdate

org.rhq.core.util.PropertiesFileUpdate
This utility helps update one or more properties in a .properties file without losing the ordering of existing properties or comment lines. You can update changes to existing properties or add new properties. Currently, there is no way to remove properties from a properties file (but you can set their values to an empty string).
Note that this utility only works on simple properties files where each name=value pair exists on single lines (i.e. they do not span multiple lines). But it can handle #-prefixed lines (i.e. comments are preserved).

This utility takes care to read and write using the ISO-8859-1 character set since that is what {@link Properties}uses to load and store properties, too.
@author John Mazzitelli

        return m_serverPropertiesFile;
    }


    private void persistServerProperty(String name, String value) {
        String filePath = getServerPropertiesFile().getAbsolutePath();
        PropertiesFileUpdate updater = new PropertiesFileUpdate(filePath);
        try {
            updater.update(name, value);
        } catch (IOException e) {
            String msgString = LOG.getMsgString(ServerI18NResourceKeys.SERVER_PROPERTY_SAVE_FAILED, name, value,
                filePath);
            throw new RuntimeException(msgString, e);
        }

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        migrateRestrictedProperties(oldServerProps);


        // now merge the old settings in with the default properties from the new server install
        String newServerPropsFilePath = getServerPropertiesFile().getAbsolutePath();
        PropertiesFileUpdate newServerPropsFile = new PropertiesFileUpdate(newServerPropsFilePath);
        newServerPropsFile.update(oldServerProps);


        return;
    }

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    private Properties getAgentServerEndpoint() throws Exception {
        Properties endpointData = new Properties();


        // load in the server properties file to find out how the server will be listening for agent messages
        File serverPropsFile = getServerPropertiesFile();
        Properties serverProps = new PropertiesFileUpdate(serverPropsFile).loadExistingProperties();


        // transport and transport params
        String transport = serverProps.getProperty("rhq.communications.connector.transport", "servlet");
        endpointData.put(PREF_RHQ_AGENT_SERVER_TRANSPORT, transport);

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            throw new RuntimeException("Failed to encrypt password.", e);
        }


        boolean userAlreadyExisted;
        try {
            PropertiesFileUpdate propsFileUpdate = new PropertiesFileUpdate(propertiesFile.getPath());
            userAlreadyExisted = propsFileUpdate.update(user, encryptedPassword);
        } catch (Exception e) {
            throw new RuntimeException("Failed to update management users properties file [" + propertiesFile + "].", e);
        }


        String verb = (userAlreadyExisted) ? "updated" : "added";

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        };
    }


    private void testSysProps(File propsFile1, File propsFile2, File jbossHome, CommandLineProducer commandLine)
        throws Exception {
        PropertiesFileUpdate propsFile1Updater = new PropertiesFileUpdate(propsFile1.getPath());
        propsFile1Updater.update("prop1", "delta");
        propsFile1Updater.update("prop4", "epsilon");


        PropertiesFileUpdate propsFile2Updater = new PropertiesFileUpdate(propsFile1.getPath());
        propsFile2Updater.update("prop2", "zeta");
        propsFile2Updater.update("prop5", "eta");


        Map<String, String> sysprops = commandLine.get().getSystemProperties();


        Assert.assertNotNull(sysprops);
        Assert.assertEquals(sysprops.size(), 8);

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                        + serverPropertiesFile.getAbsolutePath() + "]. Installation is canceled.");
            }


            // Prompt for critical required values, if not yet set.
            try {
                PropertiesFileUpdate pfu = new PropertiesFileUpdate(serverPropertiesFile);
                Properties props = pfu.loadExistingProperties();


                promptForProperty(pfu, props, serverPropertiesFile.getName(),
                    ServerProperties.PROP_AUTOINSTALL_ADMIN_PASSWORD, false, true, true);
                promptForProperty(pfu, props, serverPropertiesFile.getName(), ServerProperties.PROP_DATABASE_PASSWORD,
                    true, false, true);

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            }
        }
    }


    private void updateCassandraJvmProps(Configuration newConfig) throws IOException {
        PropertiesFileUpdate propertiesUpdater = new PropertiesFileUpdate(jvmOptsFile.getAbsolutePath());
        Properties properties = propertiesUpdater.loadExistingProperties();


        String jmxPort = newConfig.getSimpleValue("jmxPort");
        if (!StringUtil.isEmpty(jmxPort)) {
            validateIntegerArg("jmx_port", jmxPort);
            properties.setProperty("jmx_port", jmxPort);
        }


        String maxHeapSize = newConfig.getSimpleValue("maxHeapSize");
        if (!StringUtil.isEmpty(maxHeapSize)) {
            validateHeapArg("maxHeapSize", maxHeapSize);
            // We want min and max heap to be the same
            properties.setProperty("heap_min", "-Xms" + maxHeapSize);
            properties.setProperty("heap_max", "-Xmx" + maxHeapSize);
        }


        String heapNewSize = newConfig.getSimpleValue("heapNewSize");
        if (!StringUtil.isEmpty(heapNewSize)) {
            validateHeapArg("heapNewSize", heapNewSize);
            properties.setProperty("heap_new", "-Xmn" + heapNewSize);
        }


        String threadStackSize = newConfig.getSimpleValue("threadStackSize");
        if (!StringUtil.isEmpty(threadStackSize)) {
            validateIntegerArg("threadStackSize", threadStackSize);
            properties.setProperty("thread_stack_size", "-Xss" + threadStackSize + "k");
        }


        PropertySimple heapDumpOnOMMError = newConfig.getSimple("heapDumpOnOOMError");
        if (heapDumpOnOMMError != null) {
            if (heapDumpOnOMMError.getBooleanValue()) {
                properties.setProperty("heap_dump_on_OOMError", "-XX:+HeapDumpOnOutOfMemoryError");
            } else {
                properties.setProperty("heap_dump_on_OOMError", "");
            }
        }


        String heapDumpDir = useForwardSlash(newConfig.getSimpleValue("heapDumpDir"));
        if (!StringUtil.isEmpty(heapDumpDir)) {
            properties.setProperty("heap_dump_dir", heapDumpDir);
        }


        propertiesUpdater.update(properties);
    }

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            }
        }
    }


    private void updateWrapperEnv(Configuration config) throws IOException {
        PropertiesFileUpdate propertiesUpdater = new PropertiesFileUpdate(wrapperEnvFile.getAbsolutePath());
        Properties properties = propertiesUpdater.loadExistingProperties();


        String maxHeapSize = config.getSimpleValue("maxHeapSize");
        if (!StringUtil.isEmpty(maxHeapSize)) {
            validateHeapArg("maxHeapSize", maxHeapSize);
            // We want min and max heap to be the same
            properties.setProperty("set.heap_min", "-Xms" + maxHeapSize);
            properties.setProperty("set.heap_max", "-Xmx" + maxHeapSize);
        }


        String heapNewSize = config.getSimpleValue("heapNewSize");
        if (!StringUtil.isEmpty(heapNewSize)) {
            validateHeapArg("heapNewSize", heapNewSize);
            properties.setProperty("set.heap_new", "-Xmn" + heapNewSize);
        }


        String threadStackSize = config.getSimpleValue("threadStackSize");
        if (!StringUtil.isEmpty(threadStackSize)) {
            validateIntegerArg("threadStackSize", threadStackSize);
            properties.setProperty("set.thread_stack_size", "-Xss" + threadStackSize + "k");
        }


        PropertySimple heapDumpOnOMMError = config.getSimple("heapDumpOnOOMError");
        if (heapDumpOnOMMError != null) {
            if (heapDumpOnOMMError.getBooleanValue()) {
                properties.setProperty("set.heap_dump_on_OOMError", "-XX:+HeapDumpOnOutOfMemoryError");
            } else {
                properties.setProperty("set.heap_dump_on_OOMError", "");
            }
        }


        String heapDumpDir = useForwardSlash(config.getSimpleValue("heapDumpDir"));
        if (!StringUtil.isEmpty(heapDumpDir)) {
            properties.setProperty("set.heap_dump_dir", "-XX:HeapDumpPath=" + heapDumpDir);
        }


        propertiesUpdater.update(properties);
    }

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        deployer.updateFilePerms();
        deployer.updateStorageAuthConf(Sets.newHashSet("127.0.0.1", "127.0.0.2"));


        File confDir = new File(deploymentOptions.getBasedir(), "conf");
        File cassandraJvmPropsFile = new File(confDir, "cassandra-jvm.properties");
        PropertiesFileUpdate propertiesUpdater = new PropertiesFileUpdate(cassandraJvmPropsFile.getAbsolutePath());
        Properties properties = propertiesUpdater.loadExistingProperties();


        String jvmOpts = properties.getProperty("JVM_OPTS");
        jvmOpts = jvmOpts.substring(0, jvmOpts.lastIndexOf("\""));
        jvmOpts = jvmOpts + " -Dcassandra.ring_delay_ms=2000\"";
        properties.setProperty("JVM_OPTS", jvmOpts);


        propertiesUpdater.update(properties);


        File binDir = new File(deploymentOptions.getBasedir(), "bin");
        SystemInfo systemInfo = SystemInfoFactory.createSystemInfo();


        ProcessExecution processExecution = getProcessExecution(binDir);

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            File propsFile2 = null;
            File runJar = null;
            try {
                propsFile1 = File.createTempFile("jboss1-", ".properties");


                PropertiesFileUpdate propsFile1Updater = new PropertiesFileUpdate(propsFile1.getPath());
                propsFile1Updater.update("prop1", "delta");
                propsFile1Updater.update("prop4", "epsilon");


                propsFile2 = File.createTempFile("jboss2-", ".properties");
                PropertiesFileUpdate propsFile2Updater = new PropertiesFileUpdate(propsFile1.getPath());
                propsFile2Updater.update("prop2", "zeta");
                propsFile2Updater.update("prop5", "eta");
            } catch (IOException e) {
                Assert.fail();
            }


            return new String[] { //

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