Class SystemSettingUtils

java.lang.Object
software.amazon.awssdk.utils.internal.SystemSettingUtils
@SdkProtectedApi public final class SystemSettingUtils extends Object
A set of static utility methods for shared code in SystemSetting.

Implementation notes: this class should've been outside internal package, but we can't fix it due to backwards compatibility reasons.

  • Method Details

    • resolveSetting

      public static Optional<String> resolveSetting(SystemSetting setting)
      Resolve the value of this system setting, loading it from the System by checking:
      1. The system properties.
      2. The environment variables.
      3. The default value.

    • resolveNonDefaultSetting

      public static Optional<String> resolveNonDefaultSetting(SystemSetting setting)
      Resolve the value of this system setting, loading it from the System by checking:
      1. The system properties.
      2. The environment variables.

      This is similar to resolveSetting(SystemSetting) but does not fall back to the default value if neither the environment variable or system property value are present.

    • resolveEnvironmentVariable

      public static Optional<String> resolveEnvironmentVariable(SystemSetting setting)
      Attempt to load this setting from the environment variables.

    • resolveEnvironmentVariable

      public static Optional<String> resolveEnvironmentVariable(String key)
      Attempt to load a key from the environment variables.

    • safeStringToBoolean

      public static Boolean safeStringToBoolean(SystemSetting setting, String value)
      Convert a string to boolean safely (as opposed to the less strict Boolean.parseBoolean(String)). If a customer specifies a boolean value it should be "true" or "false" (case insensitive) or an exception will be thrown.