public void setEnv()

in src/main/java/com/microsoft/azure/functions/worker/handler/FunctionEnvironmentReloadRequestHandler.java [42:81]
34 lines of code
6 McCabe index (conditional complexity)

	public void setEnv(Map<String, String> newSettings) throws Exception {
		if (newSettings == null || newSettings.isEmpty()) {
			return;
		}
		
		// Update Environment variables in the JVM
		// As an FYI, the JVM creates a copy of the environment variables when it starts.
		// This will edit that copy, not the environment variables for the parent process that started the JVM
		try {
			// update env variable for running JVM on Windows
			Class<?> processEnvironmentClass = Class.forName("java.lang.ProcessEnvironment");
			Field theEnvironmentField = processEnvironmentClass.getDeclaredField("theEnvironment");
			theEnvironmentField.setAccessible(true);
			Map<String, String> env = (Map<String, String>) theEnvironmentField.get(null);
			env.clear();
			env.putAll(newSettings);
			Field theCaseInsensitiveEnvironmentField = processEnvironmentClass
					.getDeclaredField("theCaseInsensitiveEnvironment");
			theCaseInsensitiveEnvironmentField.setAccessible(true);
			Map<String, String> cienv = (Map<String, String>) theCaseInsensitiveEnvironmentField.get(null);
			cienv.clear();
			cienv.putAll(newSettings);
			WorkerLogManager.getSystemLogger().log(Level.INFO,
					"Finished resetting environment variables in the JVM");
		} catch (NoSuchFieldException e) {
			// update env variable for running JVM on Linux
			Class[] classes = Collections.class.getDeclaredClasses();
			Map<String, String> env = System.getenv();
			for (Class cl : classes) {
				if ("java.util.Collections$UnmodifiableMap".equals(cl.getName())) {
					Field field = cl.getDeclaredField("m");
					field.setAccessible(true);
					Object obj = field.get(env);
					Map<String, String> map = (Map<String, String>) obj;
					map.clear();
					map.putAll(newSettings);
				}
			}
		}
	}