@aws-cdk/core
Version:
AWS Cloud Development Kit Core Library
76 lines • 7.96 kB
JavaScript
;
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.CfnJson = void 0;
const jsiiDeprecationWarnings = require("../.warnings.jsii.js");
const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
const custom_resource_1 = require("./custom-resource");
const cfn_utils_provider_1 = require("./private/cfn-utils-provider");
const stack_1 = require("./stack");
const stack_trace_1 = require("./stack-trace");
// v2 - keep this import as a separate section to reduce merge conflict when forward merging with the v2 branch.
// eslint-disable-next-line
const construct_compat_1 = require("./construct-compat");
/**
* Captures a synthesis-time JSON object a CloudFormation reference which
* resolves during deployment to the resolved values of the JSON object.
*
* The main use case for this is to overcome a limitation in CloudFormation that
* does not allow using intrinsic functions as dictionary keys (because
* dictionary keys in JSON must be strings). Specifically this is common in IAM
* conditions such as `StringEquals: { lhs: "rhs" }` where you want "lhs" to be
* a reference.
*
* This object is resolvable, so it can be used as a value.
*
* This construct is backed by a custom resource.
*/
class CfnJson extends construct_compat_1.Construct {
constructor(scope, id, props) {
super(scope, id);
this.creationStack = [];
try {
jsiiDeprecationWarnings._aws_cdk_core_CfnJsonProps(props);
}
catch (error) {
if (process.env.JSII_DEBUG !== "1" && error.name === "DeprecationError") {
Error.captureStackTrace(error, CfnJson);
}
throw error;
}
this.creationStack = stack_trace_1.captureStackTrace();
// stringify the JSON object in a token-aware way.
this.jsonString = stack_1.Stack.of(this).toJsonString(props.value);
const resource = new custom_resource_1.CustomResource(this, 'Resource', {
serviceToken: cfn_utils_provider_1.CfnUtilsProvider.getOrCreate(this),
resourceType: "Custom::AWSCDKCfnJson" /* CFN_JSON */,
properties: {
Value: this.jsonString,
},
});
this.value = resource.getAtt('Value');
}
/**
* This is required in case someone JSON.stringifys an object which refrences
* this object. Otherwise, we'll get a cyclic JSON reference.
*/
toJSON() {
return this.jsonString;
}
resolve(_) {
try {
jsiiDeprecationWarnings._aws_cdk_core_IResolveContext(_);
}
catch (error) {
if (process.env.JSII_DEBUG !== "1" && error.name === "DeprecationError") {
Error.captureStackTrace(error, this.resolve);
}
throw error;
}
return this.value;
}
}
exports.CfnJson = CfnJson;
_a = JSII_RTTI_SYMBOL_1;
CfnJson[_a] = { fqn: "@aws-cdk/core.CfnJson", version: "1.204.0" };
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