Package com.launchdarkly.sdk.server

Enum MigrationStage

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<MigrationStage>
    public enum MigrationStage
extends java.lang.Enum<MigrationStage>
    Stage denotes one of six possible stages a technology migration could be a part of, progressing through the following order.

    Off DualWrite Shadow Live RampDown Complete

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      COMPLETE
      Complete - migration is done
      DUAL_WRITE
      DualWrite - write to both "old" and "new", "old" is authoritative for reads
      LIVE
      Live - both "new" and "old" versions run with a preference for "new"
      OFF
      Off - migration hasn't started, "old" is authoritative for reads and writes
      RAMP_DOWN
      RampDown - only read from "new", write to "old" and "new"
      SHADOW
      Shadow - both "new" and "old" versions run with a preference for "old"

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static boolean isStage​(java.lang.String strValue)
      Check if the provided string is a migration stage.
      static MigrationStage of​(java.lang.String strValue, MigrationStage defaultStage)
      Convert a string into a migration stage.
      java.lang.String toString()  
      static MigrationStage valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static MigrationStage[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.

      • Methods inherited from class java.lang.Enum

        clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Enum Constant Detail

      • OFF

        public static final MigrationStage OFF
        Off - migration hasn't started, "old" is authoritative for reads and writes

      • DUAL_WRITE

        public static final MigrationStage DUAL_WRITE
        DualWrite - write to both "old" and "new", "old" is authoritative for reads

      • SHADOW

        public static final MigrationStage SHADOW
        Shadow - both "new" and "old" versions run with a preference for "old"

      • LIVE

        public static final MigrationStage LIVE
        Live - both "new" and "old" versions run with a preference for "new"

      • RAMP_DOWN

        public static final MigrationStage RAMP_DOWN
        RampDown - only read from "new", write to "old" and "new"

      • COMPLETE

        public static final MigrationStage COMPLETE
        Complete - migration is done

    • Method Detail

      • values

        public static MigrationStage[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows: 
        for (MigrationStage c : MigrationStage.values())
    System.out.println(c);
        Returns:
        an array containing the constants of this enum type, in the order they are declared

      • valueOf

        public static MigrationStage valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Enum<MigrationStage>

      • isStage

        public static boolean isStage​(java.lang.String strValue)
        Check if the provided string is a migration stage.
        Parameters:
        strValue - The string to check.
        Returns:
        True if the string represents a migration stage.

      • of

        public static MigrationStage of​(java.lang.String strValue,
                                MigrationStage defaultStage)
        Convert a string into a migration stage.

        If the string is not a stage, then the provided default will be returned.

        Parameters:
        strValue - The string to convert.
        defaultStage - The default value to use if the string does not represent a migration stage.
        Returns:
        The converted migration stage.