Package software.amazon.awscdk

Class SecretValue

java.lang.Object
software.amazon.jsii.JsiiObject
software.amazon.awscdk.Intrinsic
software.amazon.awscdk.SecretValue
All Implemented Interfaces:
IResolvable, software.amazon.jsii.JsiiSerializable
@Generated(value="jsii-pacmak/1.104.0 (build e79254c)", date="2024-12-27T17:01:55.946Z") @Stability(Stable) public class SecretValue extends Intrinsic
Work with secret values in the CDK.

Constructs that need secrets will declare parameters of type SecretValue.

The actual values of these secrets should not be committed to your repository, or even end up in the synthesized CloudFormation template. Instead, you should store them in an external system like AWS Secrets Manager or SSM Parameter Store, and you can reference them by calling SecretValue.secretsManager() or SecretValue.ssmSecure().

You can use SecretValue.unsafePlainText() to construct a SecretValue from a literal string, but doing so is highly discouraged.

To make sure secret values don't accidentally end up in readable parts of your infrastructure definition (such as the environment variables of an AWS Lambda Function, where everyone who can read the function definition has access to the secret), using secret values directly is not allowed. You must pass them to constructs that accept SecretValue properties, which are guaranteed to use the value only in CloudFormation properties that are write-only.

If you are sure that what you are doing is safe, you can call secretValue.unsafeUnwrap() to access the protected string of the secret value.

(If you are writing something like an AWS Lambda Function and need to access a secret inside it, make the API call to GetSecretValue directly inside your Lamba's code, instead of using environment variables.)

Example: 

 IPublicHostedZone myHostedZone;
 EmailIdentity.Builder.create(this, "Identity")
         .identity(Identity.publicHostedZone(myHostedZone))
         .dkimIdentity(DkimIdentity.byoDkim(ByoDkimOptions.builder()
                 .privateKey(SecretValue.secretsManager("dkim-private-key"))
                 .publicKey("...base64-encoded-public-key...")
                 .selector("selector")
                 .build()))
         .build();

  • Constructor Details

    • SecretValue

      protected SecretValue(software.amazon.jsii.JsiiObjectRef objRef)

    • SecretValue

      protected SecretValue(software.amazon.jsii.JsiiObject.InitializationMode initializationMode)

    • SecretValue

      @Stability(Stable) public SecretValue(@NotNull Object protectedValue, @Nullable IntrinsicProps options)
      Construct a SecretValue (do not use!).

      Do not use the constructor directly: use one of the factory functions on the class instead.

      Parameters:
      protectedValue - This parameter is required.
      options -

    • SecretValue

      @Stability(Stable) public SecretValue(@NotNull Object protectedValue)
      Construct a SecretValue (do not use!).

      Do not use the constructor directly: use one of the factory functions on the class instead.

      Parameters:
      protectedValue - This parameter is required.

  • Method Details

    • cfnDynamicReference

      @Stability(Stable) @NotNull public static SecretValue cfnDynamicReference(@NotNull CfnDynamicReference ref)
      Obtain the secret value through a CloudFormation dynamic reference.

      If possible, use SecretValue.ssmSecure or SecretValue.secretsManager directly.

      Parameters:
      ref - The dynamic reference to use. This parameter is required.

    • cfnParameter

      @Stability(Stable) @NotNull public static SecretValue cfnParameter(@NotNull CfnParameter param)
      Obtain the secret value through a CloudFormation parameter.

      Generally, this is not a recommended approach. AWS Secrets Manager is the recommended way to reference secrets.

      Parameters:
      param - The CloudFormation parameter to use. This parameter is required.

    • isSecretValue

      @Stability(Stable) @NotNull public static Boolean isSecretValue(@NotNull Object x)
      Test whether an object is a SecretValue.

      Parameters:
      x - This parameter is required.

    • plainText

      @Stability(Deprecated) @Deprecated @NotNull public static SecretValue plainText(@NotNull String secret)
      Deprecated.
      Use unsafePlainText() instead.
      (deprecated) Construct a literal secret value for use with secret-aware constructs.

      Do not use this method for any secrets that you care about! The value will be visible to anyone who has access to the CloudFormation template (via the AWS Console, SDKs, or CLI).

      The only reasonable use case for using this method is when you are testing.

      Parameters:
      secret - This parameter is required.

    • resourceAttribute

      @Stability(Stable) @NotNull public static SecretValue resourceAttribute(@NotNull String attr)
      Use a resource's output as secret value.

      Parameters:
      attr - This parameter is required.

    • secretsManager

      @Stability(Stable) @NotNull public static SecretValue secretsManager(@NotNull String secretId, @Nullable SecretsManagerSecretOptions options)
      Creates a SecretValue with a value which is dynamically loaded from AWS Secrets Manager.

      If you rotate the value in the Secret, you must also change at least one property on the resource where you are using the secret, to force CloudFormation to re-read the secret.

      Parameters:
      secretId - The ID or ARN of the secret. This parameter is required.
      options - Options.

    • secretsManager

      @Stability(Stable) @NotNull public static SecretValue secretsManager(@NotNull String secretId)
      Creates a SecretValue with a value which is dynamically loaded from AWS Secrets Manager.

      If you rotate the value in the Secret, you must also change at least one property on the resource where you are using the secret, to force CloudFormation to re-read the secret.

      Parameters:
      secretId - The ID or ARN of the secret. This parameter is required.

    • ssmSecure

      @Stability(Stable) @NotNull public static SecretValue ssmSecure(@NotNull String parameterName, @Nullable String version)
      Use a secret value stored from a Systems Manager (SSM) parameter.

      This secret source in only supported in a limited set of resources and properties. Click here for the list of supported properties.

      Parameters:
      parameterName - The name of the parameter in the Systems Manager Parameter Store. This parameter is required.
      version - An integer that specifies the version of the parameter to use.

    • ssmSecure

      @Stability(Stable) @NotNull public static SecretValue ssmSecure(@NotNull String parameterName)
      Use a secret value stored from a Systems Manager (SSM) parameter.

      This secret source in only supported in a limited set of resources and properties. Click here for the list of supported properties.

      Parameters:
      parameterName - The name of the parameter in the Systems Manager Parameter Store. This parameter is required.

    • unsafePlainText

      @Stability(Stable) @NotNull public static SecretValue unsafePlainText(@NotNull String secret)
      Construct a literal secret value for use with secret-aware constructs.

      Do not use this method for any secrets that you care about! The value will be visible to anyone who has access to the CloudFormation template (via the AWS Console, SDKs, or CLI).

      The primary use case for using this method is when you are testing.

      The other use case where this is appropriate is when constructing a JSON secret. For example, a JSON secret might have multiple fields where only some are actual secret values.

      Example: 

       SecretValue secret;
 Map<String, SecretValue> jsonSecret = Map.of(
         "username", SecretValue.unsafePlainText("myUsername"),
         "password", secret);

      Parameters:
      secret - This parameter is required.

    • resolve

      @Stability(Stable) @NotNull public Object resolve(@NotNull IResolveContext context)
      Resolve the secret.

      If the feature flag is not set, resolve as normal. Otherwise, throw a descriptive error that the usage guard is missing.

      Specified by:
      resolve in interface IResolvable
      Overrides:
      resolve in class Intrinsic
      Parameters:
      context - This parameter is required.

    • unsafeUnwrap

      @Stability(Stable) @NotNull public String unsafeUnwrap()
      Disable usage protection on this secret.

      Call this to indicate that you want to use the secret value held by this object in an unchecked way. If you don't call this method, using the secret value directly in a string context or as a property value somewhere will produce an error.

      This method has 'unsafe' in the name on purpose! Make sure that the construct property you are using the returned value in is does not end up in a place in your AWS infrastructure where it could be read by anyone unexpected.

      When in doubt, don't call this method and only pass the object to constructs that accept SecretValue parameters.