import ballerinax/awslambda;
import ballerina/system;
import ballerina/io;
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@awslambda:Function
public function echo(awslambda:Context ctx, json input) returns json {
return input;
}
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The @awslambda:Function annotation marks a function to
generate an AWS Lambda function
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@awslambda:Function
public function uuid(awslambda:Context ctx, json input) returns json {
return system:uuid();
}
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@awslambda:Function
public function ctxinfo(awslambda:Context ctx, json input) returns json|error {
json result = { RequestID: ctx.getRequestId(),
DeadlineMS: ctx.getDeadlineMs(),
InvokedFunctionArn: ctx.getInvokedFunctionArn(),
TraceID: ctx.getTraceId(),
RemainingExecTime: ctx.getRemainingExecutionTime() };
return result;
}
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The awslambda:Context object contains request execution
context information
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@awslambda:Function
public function notifySQS(awslambda:Context ctx,
awslambda:SQSEvent event) returns json {
return event.Records[0].body;
}
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@awslambda:Function
public function notifyS3(awslambda:Context ctx,
awslambda:S3Event event) returns json {
return event.Records[0].s3.'object.key;
}
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@awslambda:Function
public function notifyDynamoDB(awslambda:Context ctx,
awslambda:DynamoDBEvent event) returns json {
return event.Records[0].dynamodb.Keys.toString();
}
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@awslambda:Function
public function notifySES(awslambda:Context ctx,
awslambda:SESEvent event) returns json {
return event.Records[0].ses.mail.commonHeaders.subject;
}
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@awslambda:Function
public function apigwRequest(awslambda:Context ctx,
awslambda:APIGatewayProxyRequest request) {
io:println("Path: ", request.path);
}
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