Examples with Config io.helidon.config.Config used on opensource projects

Example 86 with Config

use of io.helidon.config.Config in project helidon by oracle.

the class DeserializationExample method main.

/**
 * Executes the example.
 *
 * @param args arguments
 */
public static void main(String... args) {
    Config config = Config.create(ConfigSources.classpath("application.conf"));
    AppConfig appConfig = config.get("app").as(AppConfig.class).get();
    System.out.println(appConfig);
    assert appConfig.getGreeting().equals("Hello");
    assert appConfig.getPageSize() == 20;
    assert appConfig.getBasicRange().size() == 2;
    assert appConfig.getBasicRange().get(0) == -20;
    assert appConfig.getBasicRange().get(1) == 20;
}

Example 87 with Config

use of io.helidon.config.Config in project helidon by oracle.

the class FactoryMethodExample method main.

/**
 * Executes the example.
 *
 * @param args arguments
 */
public static void main(String... args) {
    Config config = Config.create(ConfigSources.classpath("application.conf"));
    AppConfig appConfig = config.get("app").as(AppConfig.class).get();
    System.out.println(appConfig);
    assert appConfig.getGreeting().equals("Hello");
    assert appConfig.getPageSize() == 20;
    assert appConfig.getBasicRange().size() == 2;
    assert appConfig.getBasicRange().get(0) == -20;
    assert appConfig.getBasicRange().get(1) == 20;
}

Example 88 with Config

use of io.helidon.config.Config in project helidon by oracle.

the class Main method corsSupportForGreeting.

private static CorsSupport corsSupportForGreeting(Config config) {
    // The default CorsSupport object (obtained using CorsSupport.create()) allows sharing for any HTTP method and with any
    // origin. Using CorsSupport.create(Config) with a missing config node yields a default CorsSupport, which might not be
    // what you want. This example warns if either expected config node is missing and then continues with the default.
    Config restrictiveConfig = config.get("restrictive-cors");
    if (!restrictiveConfig.exists()) {
        Logger.getLogger(Main.class.getName()).warning("Missing restrictive config; continuing with default CORS support");
    }
    CorsSupport.Builder corsBuilder = CorsSupport.builder();
    // Use possible overrides first.
    config.get("cors").ifExists(c -> {
        Logger.getLogger(Main.class.getName()).info("Using the override configuration");
        corsBuilder.mappedConfig(c);
    });
    corsBuilder.config(// restricted sharing for PUT, DELETE
    restrictiveConfig).addCrossOrigin(// open sharing for other methods
    CrossOriginConfig.create()).build();
    return corsBuilder.build();
}

Example 89 with Config

use of io.helidon.config.Config in project helidon by oracle.

the class AsSupplierExample method run.

/**
 * Executes the example.
 */
public void run() {
    Config config = Config.create(file("conf/dev.yaml").optional().changeWatcher(FileSystemWatcher.create()), file("conf/config.yaml").optional().pollingStrategy(regular(Duration.ofSeconds(2))), classpath("default.yaml"));
    // greeting.get() always return up-to-date value
    final Supplier<String> greeting = config.get("app.greeting").asString().supplier();
    // name.get() always return up-to-date value
    final Supplier<String> name = config.get("app.name").asString().supplier();
    // first greeting
    printIfChanged(greeting.get() + " " + name.get() + ".");
    // use same Supplier instances to get up-to-date value
    executor.scheduleWithFixedDelay(() -> printIfChanged(greeting.get() + " " + name.get() + "."), // check every 1 second for changes
    0, 1, TimeUnit.SECONDS);
}

Example 90 with Config

use of io.helidon.config.Config in project helidon by oracle.

the class WithSourcesExample method main.

/**
 * Executes the example.
 *
 * @param args arguments
 */
public static void main(String... args) {
    /*
           Creates a config source composed of following sources:
           - conf/dev.yaml - developer specific configuration, should not be placed in VCS;
           - conf/config.yaml - deployment dependent configuration, for example prod, stage, etc;
           - default.yaml - application default values, loaded form classpath;
           with a filter which convert values with keys ending with "level" to upper case
         */
    Config config = Config.builder(file("conf/dev.yaml").optional(), file("conf/config.yaml").optional(), classpath("default.yaml")).addFilter((key, stringValue) -> key.name().equals("level") ? stringValue.toUpperCase() : stringValue).build();
    // Environment type, from dev.yaml:
    ConfigValue<String> env = config.get("meta.env").asString();
    env.ifPresent(e -> System.out.println("Environment: " + e));
    assert env.get().equals("DEV");
    // Default value (default.yaml): Config Sources Example
    String appName = config.get("app.name").asString().get();
    System.out.println("Name: " + appName);
    assert appName.equals("Config Sources Example");
    // Page size, from config.yaml: 10
    int pageSize = config.get("app.page-size").asInt().get();
    System.out.println("Page size: " + pageSize);
    assert pageSize == 10;
    // Applied filter (uppercase logging level), from dev.yaml: finest -> FINEST
    String level = config.get("component.audit.logging.level").asString().get();
    System.out.println("Level: " + level);
    assert level.equals("FINE");
}