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Sparta v0.20.0 Release Notes

  • 🗄 :star: Deprecation Notice

    🚀 The sparta.LambdaFunc signature is officially deprecated in favor of http.HandlerFunc and will be removed in an upcoming release. See below for more information

    • 💥 :warning: BREAKING
      • Changed NewLambdaHTTPHandler to NewServeMuxLambda
      • Remove obsolete InvokeID from LambdaContext
      • Changed codePipelineTrigger CLI arg name to codePipelinePackage

    • :checkered_flag: CHANGES

      • Eliminated NodeJS cold start cp & chmod penalty! :fire:
      • Prior to this release, the NodeJS proxying code would copy the embedded binary to /tmp and add the executable flag prior to actually launching the binary. This had a noticeable performance penalty for startup.
      • This release embeds the application or library in a ./bin directory with the file permissions set so that there is no additional filesystem overhead on cold-start. h/t to StackOverflow for the tips.
      • Migrated all IPC calls to protocolBuffers.
      • Message definitions are in the proxy directory.
      • The client-side log level (eg: --level debug) is carried into the AWS Lambda Code package.
      • Provisioning a service with --level debug will log everything at logger.Debug level and higher including all AWS API calls made both at provision and Lambda execution time.
      • Help resolve "Works on My Stack" syndrome.
      • HTTP handler panic events are now recovered and the traceback logged for both NodeJS and cgo deployments
      • Introduced sparta.HandleAWSLambda
      • sparta.HandleAWSLambda accepts standard http.RequestFunc signatures as in:
        func helloWorld(w http.ResponseWriter, r *http.Request) {
    ...
  }

  lambdaFn := sparta.HandleAWSLambda("Hello HTTP World",
    http.HandlerFunc(helloWorld),
    sparta.IAMRoleDefinition{})
      • This allows you to chain middleware for a lambda function as if it were a standard HTTP handler. Say, for instance: X-Ray.
      • The legacy sparta.LambdaFunction is still supported, but marked for deprecation. You will see a log warning as in:
        WARN[0045] DEPRECATED: sparta.LambdaFunc() signature provided. Please migrate to http.HandlerFunc()
      • LambdaContext and *logrus.Logger are now available in the requext.Context() via:
        • sparta.ContextKeyLogger => *logrus.Logger
        • sparta.ContextKeyLambdaContext => *sparta.LambdaContext
      • Example:
        • loggerVal, loggerValOK := r.Context().Value(sparta.ContextKeyLogger).(*logrus.Logger)
      • Added support for CodePipeline
      • See the SpartaCodePipeline project for a complete example and the related post.
      • Upgraded NodeJS to nodejs6.10 runtime
      • Parity between NodeJS and Python/cgo startup output
      • Both NodeJS and cgo based Sparta applications now log equivalent system information.
      • Example:
        {
    "level": "info",
    "msg": "SystemInfo",
    "systemInfo": {
      "sysinfo": {
        "version": "0.9.1",
        "timestamp": "2017-09-16T17:07:34.491807588Z"
      },
      "node": {
        "hostname": "ip-10-25-51-97",
        "machineid": "0046d1358d2346adbf8851e664b30d25",
        "hypervisor": "xenhvm",
        "timezone": "UTC"
      },
      "os": {
        "name": "Amazon Linux AMI 2017.03",
        "vendor": "amzn",
        "version": "2017.03",
        "architecture": "amd64"
      },
      "kernel": {
        "release": "4.9.43-17.38.amzn1.x86_64",
        "version": "#1 SMP Thu Aug 17 00:20:39 UTC 2017",
        "architecture": "x86_64"
      },
      "product": {},
      "board": {},
      "chassis": {},
      "bios": {},
      "cpu": {
        "vendor": "GenuineIntel",
        "model": "Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz",
        "cache": 25600,
        "threads": 2
      },
      "memory": {}
    },
    "time": "2017-09-16T17:07:34Z"
  }

    • 🛠 :bug: FIXED

      • There were more than a few