Examples of com.netflix.config.ConcurrentMapConfiguration

com.netflix.config.ConcurrentMapConfiguration
This class uses a ConcurrentHashMap for reading/writing a property to achieve high throughput and thread safety. The implementation is lock free for {@link #getProperty(String)}and {@link #setProperty(String,Object)}, but has some synchronization cost for {@link #addProperty(String,Object)} if the object to add is not a String or the key already exists.
The methods from AbstractConfiguration related to listeners and event generation are overridden so that adding/deleting listeners and firing events are no longer synchronized. Also, it catches Throwable when it invokes the listeners, making it more robust.
This configuration does not allow null as key or value and will throw NullPointerException when trying to add or set properties with empty key or value. @author awang

        new SampleApplication();
        ConcurrentCompositeConfiguration myConfiguration = 
            (ConcurrentCompositeConfiguration) DynamicPropertyFactory.getInstance().getBackingConfigurationSource();
        


        ConcurrentMapConfiguration subConfig = new ConcurrentMapConfiguration();
        subConfig.setProperty("com.netflix.config.samples.SampleApp.SampleBean.name", "A Coffee Bean from Cuba");
        myConfiguration.setProperty("com.netflix.config.samples.sampleapp.prop1", "value1");


        myConfiguration.addConfiguration(subConfig);
        System.out.println("Started SampleApplication. Launch JConsole to inspect and update properties.");
        System.out.println("To see how callback work, update property com.netflix.config.samples.SampleApp.SampleBean.sensitiveBeanData from BaseConfigBean in JConsole");

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    // Step 1.
    // Create a Source of Configuration
    // Here we use a simple ConcurrentMapConfiguration
    // You can use your own, or use of the pre built ones including JDBCConfigurationSource
    // which lets you load properties from any RDBMS
    AbstractConfiguration myConfiguration = new ConcurrentMapConfiguration();
    myConfiguration.setProperty("com.netflix.config.samples.sampleapp.prop1", "value1");
    myConfiguration.setProperty(
        "com.netflix.config.samples.SampleApp.SampleBean.name",
        "A Coffee Bean from Gautemala");


    // STEP 2: Optional. Dynamic Runtime property change option
    // We would like to utilize the benefits of obtaining dynamic property

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        // setup system properties
        System.setProperty("test.key4", "test.value4-system");
        System.setProperty("test.key5", "test.value5-system");


        final ConcurrentMapConfiguration systemConfig = new ConcurrentMapConfiguration();
        systemConfig.loadProperties(System.getProperties());


        final DynamicWatchedConfiguration zkDynamicOverrideConfig = new DynamicWatchedConfiguration(zkConfigSource);


        mapConfig = new ConcurrentMapConfiguration();
        mapConfig.addProperty("test.key1", "test.value1-map");
        mapConfig.addProperty("test.key2", "test.value2-map");
        mapConfig.addProperty("test.key3", "test.value3-map");
        mapConfig.addProperty("test.key4", "test.value4-map");

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            if (child instanceof CombinedConfiguration) {
                CombinedConfiguration combinedConf = (CombinedConfiguration) child;
                ConcurrentCompositeConfiguration newConf = convertToConcurrentCompositeConfiguration(combinedConf);
                root.addConfiguration(newConf, name);
            } else {
                Configuration conf = new ConcurrentMapConfiguration(child);
                root.addConfiguration((AbstractConfiguration) conf, name);
            }
        }
        return root;
    }

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        // there is no next load for this properties file
        if (nextLoadKeyToUse == null) {
            return null;
        }
        // make a copy of current existing properties
        ConcurrentMapConfiguration config = new ConcurrentMapConfiguration();
        
        // need to have all the properties to interpolate next load property value
        copyProperties(ConfigurationManager.getConfigInstance(), config);
        copyProperties(propConfig, config);
        // In case this is a list of files to load, always treat the value as a list
        List<Object> list = config.getList(nextLoadKeyToUse);
        StringBuilder sb = new StringBuilder();
        for (Object value: list) {
            sb.append(value).append(",");
        }
        String nextLoad = sb.toString();

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Related Classes of com.netflix.config.ConcurrentMapConfiguration

com.netflix.config.samples.SampleApplication

com.netflix.config.samples.SampleApplicationWithDefaultConfiguration

com.netflix.config.source.ZooKeeperConfigurationSourceTest

com.netflix.config.util.ConfigurationUtils

org.apache.commons.configuration.event.ConfigurationErrorEvent

org.apache.commons.configuration.event.ConfigurationEvent

java.util.Properties

java.util.concurrent.locks.ReentrantLock

java.util.Iterator

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