appsync-parameter-store-resolver

This is an AWS Lambda designed to resolve appsync requests to Parameter Store.

AWS Permissions Required

• ssm:GetParameter
• ssm:GetParameters
• ssm:GetParametersByPath
• ssm:PutParameter

Handler Method

function.handler

Request Syntax

The event is passed in as a JSON object. Examples:

{
  "operation": "getParameter",
  "arguments": {
    "name": "name"
  }
}

{
  "operation": "getParameters",
  "arguments": {
    "names": ["name1", "name2]
  }
}

{
  "operation": "getParametersByPath",
  "arguments": {
    "path": "path",
    "recursive": true | false
  }
}

{
  "operation": "putParameter",
  "arguments": {
    "name": "",
    "description": "",
    "value": "string",
    "secure": true | false,
    "overwrite": true|false
  },
  "keyId": ""
}

operation - REQUIRED

Can be one of getParameter, getParameters, getParametersByPath, or putParameter.

getParameter

name:	the name of the parameter to get - REQUIRED

getParameters

names:	the names of the parameters to get - REQUIRED

getParametersByPath

path:	the path to get parameters under - REQUIRED
recursive:	true or false - REQUIRED

putParameter

name:	the name of the paramter to put - REQUIRED
description:	the description of the parameter - OPTIONAL
value:	the value of the parameter. If this contains a , then a StringList will be used - REQUIRED
secure:	true or false - OPTIONAL, defaults to false
overwrite:	true or false - OPTIONAL, defaults to true
keyId:	the KMS Key ARN or ID to encrypt the parameter - OPTIONAL, defaults to the account key

Each of these requests can be batched via the BatchInvoke protocol from Appsync.

Response syntax

For getParameter and putParameter:

{
  "name": "string",
  "value": "string",
  "lastModifiedDate": "iso8601 datetime",
  "version": int
}

For getParameters and getParametersByPath:

[
  {
    "name": "string",
    "value": "string",
    "lastModifiedDate": "iso8601 datetime",
    "version": int
  }
]

Example AWS Appsync schema:

type Mutation {
  putParameter(
    name: String!,
    value: String!,
    description: String,
    secure: Boolean,
    overwrite: Boolean
  ): Parameter
}

type Parameter {
  name: String!
  value: String!
  lastModifiedDate: AWSDateTime!
  version: Int!
}

type Query {
  getParameter(name: String!): Parameter
  getParameters(names: [String]!): [Parameter]
  getParametersByPath(path: String!, recursive: Boolean!): [Parameter]
}

schema {
  query: Query
  mutation: Mutation
}

Lambda Package Location

https://s3.amazonaws.com/lambdalambdalambda-repo/quinovas/appsync-parameter-store-resolver/appsync-parameter-store-resolver-0.0.1.zip

License: APL2