kopia lustrzana https://github.com/miklobit/TiddlyWiki5
AWS plugin: Add support for a compressed payload
AWS imposes a limit of 16MB in my testing for the payload of a lambda. Compressing it enables us to pass x2-3 more data, thanks to the inefficiencies of JSONlogging-improvements
rodzic
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d6a0b06f02
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@ -39,6 +39,17 @@ The Lambda boot code looks for an array of tiddlers to load in `event.tiddlers`,
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```
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The event data can optionally be compressed by passing a JSON object with a single property `compressed` that contains a base64 encoded GZIP compressed representation of the JSON payload data. For example:
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```
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var strPayload = JSON.stringify(payload);
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require("zlib").gzip(strPayload,function(err,buff) {
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var compressedPayload = {compressed: new Buffer(buff).toString("base64")};
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// Invoke lambda with compressed payload
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...
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});
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```
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! Return data
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If the Lambda function successfully executes it returns an object with the following fields:
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@ -16,15 +16,29 @@ exports.handler = function(event,context,callback) {
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$tw.packageInfo = lambdaPackageInfo;
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// Load any tiddlers from the package
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$tw.preloadTiddlerArray(lambdaTiddlers);
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// Load any tiddlers from the event
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if(event.tiddlers) {
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$tw.preloadTiddlerArray(event.tiddlers);
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// Decompress the event data if required
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if(typeof event.compressed === "string") {
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require("zlib").gunzip(Buffer.from(event.compressed,"base64"),function(err,buff) {
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if(err) {
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return callback(err);
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}
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boot(JSON.parse(buff.toString()));
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});
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} else {
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boot(event);
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}
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function boot(event) {
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// Load any tiddlers from the event
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if(event.tiddlers) {
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$tw.preloadTiddlerArray(event.tiddlers);
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}
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// Load the commands from the event
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$tw.boot.argv = (event.commands || []).slice(0);
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// Boot the TW5 app
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_boot($tw);
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$tw.boot.boot(function() {
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callback(null,$tw["lambda-result"]);
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});
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}
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// Load the commands from the event
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$tw.boot.argv = (event.commands || []).slice(0);
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// Boot the TW5 app
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_boot($tw);
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$tw.boot.boot(function() {
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callback(null,$tw["lambda-result"]);
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});
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}
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