Add support to decrypt params (#3)

Author: albertomr86

README.md

@@ -7,6 +7,7 @@ This package allows you to configure your NestJS application by loading the conf
 ```bash
 npm install nestjs-param-store @aws-sdk/client-ssm
 ```
+
 ## Configuration
 
 ### Static configuration
@@ -19,6 +20,7 @@ import { PSConfigModule } from 'nestjs-param-store';
   imports: [
     PSConfigModule.register({
       ssmParamStorePath: '/production/services/my-service',
+      ssmDecryptParams: true,
       ssmClientOptions: {
         region: 'us-east-1',
       },
@@ -45,6 +47,7 @@ import { PSConfigModule } from 'nestjs-param-store';
       imports: [ConfigModule],
       useFactory: async (config: ConfigService<EnvironmentVariables>) => ({
         ssmParamStorePath: config.get<string>('APP_CONFIG_PATH'),
+        ssmDecryptParams: true,
         ssmClientOptions: {
           region: config.get<string>('AWS_REGION'),
         },

lib/interfaces/config-options.interface.ts

@@ -2,5 +2,6 @@ import { SSMClientConfig } from '@aws-sdk/client-ssm';
 
 export interface PSConfigOptions {
   ssmParamStorePath: string;
+  ssmDecryptParams?: boolean;
   ssmClientOptions?: SSMClientConfig;
 }

lib/providers/config-parameters.provider.ts

@@ -9,7 +9,10 @@ export const configParametersProvider: FactoryProvider<PSConfigParameters> = {
     configOptions: PSConfigOptions,
     psService: ParameterStoreService,
   ): Promise<PSConfigParameters> => {
-    return psService.getParametersByPath(configOptions.ssmParamStorePath);
+    return psService.getParametersByPath(
+      configOptions.ssmParamStorePath,
+      configOptions.ssmDecryptParams ?? false,
+    );
   },
   inject: [PS_CONFIG_OPTIONS, ParameterStoreService],
 };

lib/services/parameter-store.service.ts

@@ -12,9 +12,13 @@ export class ParameterStoreService {
     @Inject(SSM_PS_CLIENT) private readonly client: SSMClient,
   ) {}
 
-  public async getParametersByPath(path: string): Promise<Parameter[]> {
+  public async getParametersByPath(
+    path: string,
+    decrypt = false,
+  ): Promise<Parameter[]> {
     const getParameters = new GetParametersByPathCommand({
       Path: path,
+      WithDecryption: decrypt,
     });
 
     const { Parameters = [] } = await this.client.send(getParameters);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nestjs-param-store",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "Configure your NestJS application with AWS Parameter Store",
   "author": "Alberto Menendez Romero <albertomr86@gmail.com>",
   "keywords": [