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bring "@cdktf/provider-aws" as tfaws; | ||
bring aws; | ||
bring util; | ||
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// --- dynamodb --- | ||
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enum AttributeType { | ||
String, | ||
Number, // note: DynamoDB requires you to provide the `value` as a string | ||
Binary, | ||
} | ||
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struct Attribute { | ||
type: AttributeType; | ||
value: Json; | ||
} | ||
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// TODO: https://github.com/winglang/wing/issues/3350 | ||
// typealias Item = Map<Attribute>; | ||
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struct DynamoDBTableProps { | ||
hashKey: str; | ||
} | ||
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class DynamoDBTable { | ||
table: tfaws.dynamodbTable.DynamodbTable; | ||
tableName: str; | ||
hashKey: str; | ||
init(props: DynamoDBTableProps) { | ||
let target = util.env("WING_TARGET"); | ||
if target != "tf-aws" { | ||
throw("Unsupported target: ${target} (expected 'tf-aws')"); | ||
} | ||
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this.hashKey = props.hashKey; | ||
this.table = new tfaws.dynamodbTable.DynamodbTable( | ||
name: "Table-${this.node.addr.substring(this.node.addr.length - 8)}", | ||
billingMode: "PAY_PER_REQUEST", | ||
hashKey: this.hashKey, | ||
attribute: [ | ||
{ | ||
name: this.hashKey, | ||
type: "S", | ||
}, | ||
], | ||
); | ||
this.tableName = this.table.name; | ||
} | ||
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_bind(host: std.IInflightHost, ops: Array<str>) { | ||
if let host = aws.Function.from(host) { | ||
if ops.contains("putItem") { | ||
host.addPolicyStatements([aws.PolicyStatement { | ||
actions: ["dynamodb:PutItem"], | ||
resources: [this.table.arn], | ||
effect: aws.Effect.ALLOW, | ||
}]); | ||
} | ||
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if ops.contains("getItem") { | ||
host.addPolicyStatements([aws.PolicyStatement { | ||
actions: ["dynamodb:GetItem"], | ||
resources: [this.table.arn], | ||
effect: aws.Effect.ALLOW, | ||
}]); | ||
} | ||
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if ops.contains("scan") { | ||
host.addPolicyStatements([aws.PolicyStatement { | ||
actions: ["dynamodb:Scan"], | ||
resources: [this.table.arn], | ||
effect: aws.Effect.ALLOW, | ||
}]); | ||
} | ||
} | ||
} | ||
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extern "./dynamo.js" inflight _putItem(tableName: str, item: Json): void; | ||
extern "./dynamo.js" inflight _getItem(tableName: str, key: Json): Map<Map<Map<str>>>; | ||
extern "./dynamo.js" inflight _scan(tableName: str): Map<Array<Map<Map<str>>>>; | ||
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inflight putItem(item: Map<Attribute>) { | ||
let json = this._itemToJson(item); | ||
this._putItem(this.tableName, json); | ||
} | ||
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inflight getItem(key: Map<Attribute>): Map<Attribute> { | ||
let json = this._itemToJson(key); | ||
let result = this._getItem(this.tableName, json); | ||
return this._rawMapToItem(result.get("Item")); | ||
} | ||
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inflight scan(): Array<Map<Attribute>> { | ||
let result = this._scan(this.tableName); | ||
let rawItems = result.get("Items"); | ||
let items = MutArray<Map<Attribute>>[]; | ||
for rawItem in rawItems { | ||
let item = this._rawMapToItem(rawItem); | ||
items.push(item); | ||
} | ||
return items.copy(); | ||
} | ||
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inflight _itemToJson(item: Map<Attribute>): Json { | ||
let json = MutJson {}; | ||
for key in item.keys() { | ||
let attribute = item.get(key); | ||
let attributeTypeStr = this._attributeTypeToString(attribute.type); | ||
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let innerJson = MutJson {}; | ||
innerJson.set(attributeTypeStr, attribute.value); | ||
json.set(key, innerJson); | ||
} | ||
return json; | ||
} | ||
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inflight _rawMapToItem(input: Map<Map<str>>): Map<Attribute> { | ||
let item = MutMap<Attribute> {}; | ||
for key in input.keys() { | ||
let attributeJson = input.get(key); | ||
let attributeTypeStr = attributeJson.keys().at(0); | ||
let attributeType = this._stringToAttributeType(attributeTypeStr); | ||
let attributeValue = attributeJson.get(attributeTypeStr); | ||
item.set(key, Attribute { | ||
type: attributeType, | ||
value: attributeValue, | ||
}); | ||
} | ||
return item.copy(); | ||
} | ||
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inflight _attributeTypeToString(type: AttributeType): str { | ||
if type == AttributeType.String { | ||
return "S"; | ||
} elif type == AttributeType.Number { | ||
return "N"; | ||
} elif type == AttributeType.Binary { | ||
return "B"; | ||
} | ||
} | ||
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inflight _stringToAttributeType(type: str): AttributeType { | ||
if type == "S" { | ||
return AttributeType.String; | ||
} elif type == "N" { | ||
return AttributeType.Number; | ||
} elif type == "B" { | ||
return AttributeType.Binary; | ||
} | ||
} | ||
} |
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