I found a solution on Stack Overflow to access configurations stored in an AWS parameter. The implementation involves using the code snippet below:
export class SSMParameterReader extends AwsCustomResource {
constructor(scope: Construct, name: string, props: SSMParameterReaderProps) {
const { parameterName, region } = props;
const ssmAwsSdkCall: AwsSdkCall = {
service: 'SSM',
action: 'getParameter',
parameters: {
Name: parameterName
},
region,
physicalResourceId: {id:Date.now().toString()}
};
super(scope, name, { onUpdate: ssmAwsSdkCall,policy:{
statements:[new iam.PolicyStatement({
resources : ['*'],
actions : ['ssm:GetParameter'],
effect:iam.Effect.ALLOW,
}
)]
}});
}
public getParameterValue(): string {
return this.getResponseField('Parameter.Value').toString();
}
}
However, I encountered a JSON parameter and struggled to access its value. One example is
{ "subnetId": "subnet-xxxxxx" }I attempted modifying the code to extract the value with no success, such as:
...
public getParameterValue(path: string): string {
return this.getResponseField(`Parameter.Value.${path}`).toString();
}
If you have any insight on how to extract the value of the parameter like subnetId, please share your knowledge.