Onlycoldstarts #2
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| // run invocations in series | ||
| const {invocationResults, actualPayload} = await utils.invokeLambdaWithProcessors(lambdaARN, lambdaAlias, payloads[i], preARN, postARN); | ||
| if (onlyColdStarts){ | ||
| await utils.waitForAliasActive(lambdaARN, aliasToInvoke); |
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no try-catch needed here? if it's not needed, I'd remove it above too :)
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The one above was for debug purposes - I will remove both
lambda/initializer.js
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| return powerValues; | ||
| module.exports.versionPublisher = async(event, context) => { |
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ideally this would be in a new file, to keep the one-function-per-file convention :)
template.yml
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| - Version: '2012-10-17' # allow Lambda actions | ||
| Statement: | ||
| - Effect: Allow | ||
| Action: |
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Let's check which of these actions are still needed for the Initializer function above.
I think now the initializer is only reading and the publisher is only writing?
lambda/initializer.js
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| for (let powerValue of powerValues){ | ||
| const baseAlias = 'RAM' + powerValue; | ||
| if (!onlyColdStarts){ | ||
| lambdaFunctionsToSet.push({lambdaARN: lambdaARN, powerValue: powerValue, envVars: envVars, alias: baseAlias}); |
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Splitting this logic into two separate function has a few security/privacy implications.
My concern here is that we are not only reading/modifying the environment variables of the given Lambda Function, but also passing them into the state machine input/output (and will likely end up into the overall state machine output too?). This could create complications when it comes to logging potentially sensitive variables/secrets to CloudWatch.
At the same time, I cannot think of a great alternative, besides refactoring this to be within the same Initializer function, with the same iterator logic, but then reading/updating the configuration on the spot.
In other words, instead of reading everything upfront to generate the full initConfigurations list, we would still iterate num times, and invoke utils.getLambdaPower and utils.createPowerConfiguration each time. I know it's a waste of time to invoke utils.getLambdaPower every time, but I think that's a better problem to have than passing around env variables & secrets.
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| // wait for functoin update to complete | ||
| await utils.waitForFunctionUpdate(lambdaARN); | ||
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| const {Version} = await utils.publishLambdaVersion(lambdaARN); | ||
| if (typeof alias === 'undefined'){ |
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This happens when we want to create a lambda version with the original power values (before Power Tuner modifications), and we don't want to setup an Alias for it (e.g. it'll be $LATEST)
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ok cool, I'd add a comment about it :) it will be harder to guess/remember in 6 months
Pull Request Test Coverage Report for Build 5070838536
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Closing this PR, please refer to the PR on the main project repo alexcasalboni#206 |
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