The New Relic Lambda Tracer is an OpenTracing Tracer implementation specifically designed to instrument Java-based AWS Lambda functions. The New Relic Lambda Tracer is intended to work in conjunction with the AWS Lambda OpenTracing Java SDK.
It generates the following data in AWS Cloudwatch logs which, is then scraped by a log ingestion Lambda function and sent to New Relic's telemetry data platform:
- Span events
- Transaction events
- Error events
- Traced errors
Currently, the New Relic Lambda Tracer does not generate data types such as metrics or transaction traces.
You can find artifacts for the New Relic OpenTracing AWS Lambda Tracer and AWS Lambda OpenTracing Java SDK on Maven Central.
The example below shows how to add them as dependencies in your build.gradle file:
dependencies {
implementation("com.newrelic.opentracing:newrelic-java-lambda:2.0.0")
implementation("com.newrelic.opentracing:java-aws-lambda:2.0.0")
}The New Relic Lambda Tracer and SDK support different versions of OpenTracing as detailed below:
- OpenTracing
0.31.0:- Lambda Tracer: com.newrelic.opentracing:newrelic-java-lambda:1.1.1
- Lambda SDK: com.newrelic.opentracing:java-aws-lambda:1.0.0
- OpenTracing
0.32.0,0.33.0:- Lambda Tracer: com.newrelic.opentracing:newrelic-java-lambda:2.0.0
- Lambda SDK: com.newrelic.opentracing:java-aws-lambda:2.0.0
For full details on getting started please see the documentation on how to Enable monitoring AWS Lambda with New Relic Serverless.
package com.handler.example;
import com.amazonaws.services.lambda.runtime.Context;
import io.opentracing.util.GlobalTracer;
import com.newrelic.opentracing.aws.TracingRequestHandler;
import com.newrelic.opentracing.LambdaTracer;
import java.util.Map;
/**
* Tracing request handler that creates a span on every invocation of a Lambda.
*
* @param Map<String, Object> The Lambda Function input
* @param String The Lambda Function output
*/
public class MyLambdaHandler implements TracingRequestHandler<Map<String, Object>, String> {
static {
// Register the New Relic OpenTracing LambdaTracer as the Global Tracer
GlobalTracer.registerIfAbsent(LambdaTracer.INSTANCE);
}
/**
* Method that handles the Lambda function request.
*
* @param input The Lambda Function input
* @param context The Lambda execution environment context object
* @return String The Lambda Function output
*/
@Override
public String doHandleRequest(Map<String, Object> input, Context context) {
// TODO Your function logic here
return "Lambda Function output";
}
}The New Relic Lambda Tracer follows OpenTracing semantic conventions when recording error events and traces. The minimum required attributes for errors are error.object and message.
| Log key | Log type | Note | Required |
|---|---|---|---|
error.object |
Throwable |
The Throwable object |
Yes |
message |
Throwable message |
The detail message string of the throwable | Yes |
event |
String "error" |
Indicates that an error event has occurred | Optional |
stack |
Throwable stacktrace |
The stack trace information of the throwable | Optional |
error.kind |
String "Exception" |
Indicates that the error was an Exception |
Optional |
Run jar task: ./gradlew jar
Artifact: newrelic-lambda-tracer-java/build/libs/newrelic-java-lambda.jar
- Unit tests:
newrelic-lambda-tracer-java/src/test - JMH benchmarks:
newrelic-lambda-tracer-java/src/jmh- Run JMH benchmarks:
./gradlew jmh - Find results in
build/reports/jmh
- Run JMH benchmarks:
When submitting a pull request, please ensure that tests are included for any new functionality and that all test suites are passing.
The New Relic Lambda Tracer logs a JSON payload to AWS Cloudwatch logs upon completion of the Lambda function. By default, everything but the metadata section in the JSON payload is compressed, as seen in the following example:
[
2,
"NR_LAMBDA_MONITORING",
{
"agent_version": "2.0.0",
"protocol_version": 16,
"agent_language": "java",
"execution_environment": "AWS_Lambda_java8",
"arn": "arn:aws:lambda:us-west-2:47474747:function:test",
"metadata_version": 2
},
"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"
]Additionally, you can use debug logging to log the uncompressed payloads, as seen in the below example.
To enable debug logging set the NEW_RELIC_DEBUG environment variable to true in the AWS Lambda console for a given function.
[
2,
"DEBUG",
{
"agent_version": "2.0.0",
"protocol_version": 16,
"agent_language": "java",
"execution_environment": "AWS_Lambda_java8",
"arn": "arn:aws:lambda:us-west-2:47474747474747:function:test",
"metadata_version": 2
},
{
"span_event_data": [
null,
{
"events_seen": 2,
"reservoir_size": 2
},
[
[
{
"traceId": "e8463c1d5c21c30d",
"parent.app": "222",
"type": "Span",
"priority": 1.3804669,
"nr.entryPoint": true,
"parentId": "66fdb8dd9395101f",
"transactionId": "fb380e7b21653cff",
"parent.type": "App",
"duration": 2.047513,
"parent.account": "111",
"name": "handleRequest",
"guid": "d19ca9eb0b654bf3",
"parent.transportType": "Unknown",
"category": "generic",
"parent.transportDuration": 22467614,
"sampled": true,
"timestamp": 1592612674974
},
{
"http.status_code": "200",
"aws.lambda.arn": "arn:aws:lambda:us-west-2:47474747474747:function:test",
"aws.lambda.coldStart": true,
"aws.requestId": "66f28af4-4747-4747-4747-6c530eac11b3"
},
{}
],
[
{
"traceId": "e8463c1d5c21c30d",
"parent.app": "222",
"type": "Span",
"priority": 1.3804669,
"parentId": "d19ca9eb0b654bf3",
"transactionId": "fb380e7b21653cff",
"parent.type": "App",
"duration": 2.021592,
"parent.account": "111",
"name": "makeExternalCallToApiGatewayProxy",
"guid": "8ad49b09467bf3e0",
"parent.transportType": "Unknown",
"category": "generic",
"parent.transportDuration": 22467614,
"sampled": true,
"timestamp": 1592612674996
},
{
"externalUrl": "https://4747474747.execute-api.us-west-2.amazonaws.com/testing/dt-callee",
"newrelicHeaders": true,
"responseMessage": "OK",
"responseCode": 200
},
{}
]
]
],
"analytic_event_data": [
null,
{
"events_seen": 1,
"reservoir_size": 1
},
[
[
{
"traceId": "e8463c1d5c21c30d",
"parent.app": "222",
"type": "Transaction",
"priority": 1.3804669,
"parentSpanId": "66fdb8dd9395101f",
"parent.type": "App",
"parentId": "1265e734ecb22629",
"duration": 2.047513,
"parent.account": "111",
"name": "Other/Function/test",
"guid": "fb380e7b21653cff",
"parent.transportType": "Unknown",
"parent.transportDuration": 22467614,
"sampled": true,
"timestamp": 1592612674974
},
{
"aws.lambda.arn": "arn:aws:lambda:us-west-2:47474747474747:function:test",
"aws.lambda.coldStart": true,
"aws.requestId": "66f28af4-4747-4747-4747-6c530eac11b3"
},
{
"response.status": "200"
}
]
]
]
}
]New Relic hosts and moderates an online forum where customers can interact with New Relic employees as well as other customers to get help and share best practices. Like all official New Relic open source projects, there's a related Community topic in the New Relic Explorers Hub. You can find this project's topic/threads here:
https://discuss.newrelic.com/tags/javaagent
We encourage your contributions to improve newrelic-lambda-tracer-java! Keep in mind when you submit your pull request, you'll need to sign the CLA via the click-through using CLA-Assistant. You only have to sign the CLA one time per project.
If you have any questions, or to execute our corporate CLA, required if your contribution is on behalf of a company, please drop us an email at [email protected].
newrelic-lambda-tracer-java is licensed under the Apache 2.0 License.
newrelic-lambda-tracer-java also uses source code from third-party libraries. You can find full details on which libraries are used and the terms under which they are licensed in the third-party notices document.
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