AWS Lambda not working when deployed with CDK - amazon-web-services

Question

I am trying to deploy a lambda using AWS CDK and it seems not to be working/deployed properly.
The "box" in the pipeline is green, so no errors are returned.
Everything appears to be fine, but when I ran it manually to test, I receive the next message:
{
"errorType": "LambdaException",
"errorMessage": "Could not find the required 'QuickSight.Lambdas.SpiceRefresh.deps.json'. This file should be present at the root of the deployment package."
}
The issue is that if I download the artefact manually to my machine, and upload it with the Function package upload button, it is working properly.
I have one Stack which contains CfnParametersCode which is the stack I use to create the lambda.
public class LambdaStack : Stack
{
public CfnParametersCode LambdaCode { get; set; }
//code
private Function BuildSpiceRefreshLambda()
{
LambdaCode = Code.FromCfnParameters();
var func = new Function(this, Constants.Lambda.LambdaName, new FunctionProps
{
Code = LambdaCode,
Handler = Constants.Lambda.LambdaHandler,
FunctionName = Constants.Lambda.LambdaName,
MemorySize = 1024,
Tracing = Tracing.ACTIVE,
Timeout = Duration.Seconds(480),
Runtime = Runtime.DOTNET_CORE_2_1,
Environment = new Dictionary<string, string>()
{
{"ENVIRONMENT", Fn.Ref(Constants.EnvironmentVariables.Environment)},
{"APPLICATION_NAME", Constants.Lambda.ApplicationName},
{"AWS_ACCOUNT_ID", Fn.Ref("AWS::AccountId")},
{"LOG_GROUP_NAME", Constants.Lambda.LogGroupName}
},
ReservedConcurrentExecutions = 1,
Role = SpiceRefreshLambdaRole,
Vpc = this.GetProjectVpc(),
SecurityGroups = new ISecurityGroup[]
{
securityGroup
}
});
return func;
}
}
and then I have the pipeline which one of the steps is build the lambda:
var lambdaBuild = new PipelineProject(this, "appLambda", new PipelineProjectProps
{
BuildSpec = BuildSpec.FromObject(new Dictionary<string, object>
{
["version"] = "0.2",
["phases"] = new Dictionary<string, object>
{
["install"] = new Dictionary<string, object>
{
["commands"] = new string[]
{
"echo \"Installing lambda tools for dotnet\"",
"dotnet tool install -g Amazon.Lambda.Tools",
}
},
["build"] = new Dictionary<string, object>
{
["commands"] = new string[]
{
"echo \"Packaging app lambda\"",
"(cd app/src/Lambdas/app.Lambdas.Action; dotnet lambda package)"
}
}
},
["artifacts"] = new Dictionary<string, object>
{
["files"] = new[]
{
"app/src/Lambdas/app.Lambdas.Action/bin/Release/netcoreapp2.1/app.Lambdas.Action.zip",
}
}
}),
Environment = new BuildEnvironment
{
BuildImage = LinuxBuildImage.STANDARD_2_0
}
});
var lambdaBuildOutput = new Artifact_("LambdaBuildOutput");
new Amazon.CDK.AWS.CodePipeline.Pipeline(this, "appPipeline", new PipelineProps
{
ArtifactBucket = Bucket.FromBucketAttributes(this, "artifact-bucket", new BucketAttributes
{
BucketArn = "bucket",
EncryptionKey = "key"
}),
Role = "role",
Stages = new[]
{
new StageProps
{
StageName = "Source",
Actions = new[]
{
new CodeCommitSourceAction(new CodeCommitSourceActionProps
{
ActionName = "Source",
Repository = code,
Output = sourceOutput,
})
}
},
new StageProps
{
StageName = "Build",
Actions = new[]
{
new CodeBuildAction(new CodeBuildActionProps
{
ActionName = "Lambda_Build",
Project = lambdaBuild,
Input = sourceOutput,
Outputs = new[] {lambdaBuildOutput},
}),
}
},
new StageProps
{
StageName = "Deploy",
Actions = new[]
{
new CloudFormationCreateUpdateStackAction(new CloudFormationCreateUpdateStackActionProps
{
ActionName = "DeployLambdaapp",
TemplatePath = props.appLambdaStack.StackTemplate,
StackName = "appLambdaDeploymentStack",
AdminPermissions = true,
ParameterOverrides = props.appLambdaStack.LambdaCode.Assign(lambdaBuildOutput.S3Location),
ExtraInputs = new[] {lambdaBuildOutput},
Role = "role",
DeploymentRole = "deployRole"
}),
}
}
}
});
there is more steps but they are not relevant.
so as you can see I am applying the ParameterOverrides to props.appLambdaStack.LambdaCode.Assign(lambdaBuildOutput.S3Location) which seems to be fine, because When the lambda gets created, and it specifies the size, which is the same size as the lambda was supposed to be, but when I execute it I receive that "errorMessage": "Could not find the required 'QuickSight.Lambdas.SpiceRefresh.deps.json'. This file should be present at the root of the deployment package."
On the result Cloudformation file seems to be fine too:
"appLambdaF0BB8286": {
"Type": "AWS::Lambda::Function",
"Properties": {
"Code": {
"S3Bucket": {
"Ref": "appLambdaSourceBucketNameParameter"
},
"S3Key": {
"Ref": "appLambdaSourceObjectKeyParameter"
}
},
"Handler": "Constants.Lambda.LambdaHandler", //same as the constant in c#
//Rest of the properties
}
}
I checked before creating the post and most of the people had a problem with the handler. Un fortunately if I download manually the object in appLambdaSourceBucketNameParameter, appLambdaSourceObjectKeyParameter and upload it to the lambda, it works perfectly. I think that will exclude my issue.
Any idea what can be wrong?

Answer 1

Found the solution.
The issue is that in the artifact I am returning the lambda .zip
["files"] = new[]
{
"app/src/Lambdas/app.Lambdas.Action/bin/Release/netcoreapp2.1/app.Lambdas.Action.zip",
}
But what I really need is to return the binaries of the lambda. (the publish folder)
["artifacts"] = new Dictionary<string, object>
{
["base-directory"] = "app/src/Lambdas/app.Lambdas.Action/bin/Release/netcoreapp2.1/publish",
["files"] = new[] { "**.*" }
}
nothing else changed, and it worked.
Cloudformation translation:
before I was exporting artifact::app.Lambdas.Action.zip
then AWS was trying to find the binaries.
Now it is exporting artifact::**.*, so all the files.