FYI: I managed to get it to work - I still get the message about trying to save
the changes file and it not being possible - however my error was not
specifying —no-default-preferences and also around correctly escaping the
command line - the “eval” command is a bit tricky as you need to escape any “
characters as they are badly interpreted.
Thus I had to do the following:
const child = exec('./pharo Pharo.image --no-default-preferences eval "Lambda
processJSON: \'' + JSON.stringify(event).replace(/"/g,'\\"') + '\'"', (error)
=> {
}
It looks like a simple lambda execution takes about 2700 to 2900ms
Tim
> On 28 Jun 2017, at 01:01, Tim Mackinnon <[email protected]> wrote:
>
> Hi Sven, I'm curious how you are running your image.
>
> I am following this tutorial -
> https://aws.amazon.com/blogs/compute/scripting-languages-for-aws-lambda-running-php-ruby-and-go/
>
> <https://aws.amazon.com/blogs/compute/scripting-languages-for-aws-lambda-running-php-ruby-and-go/>
>
> And am running pharo like the GO example by exec'ing via node js.
>
> My aim was to write an Alexa service in pharo vs nodejs like I have been
> doing.
>
> I was assuming I can call pharo via the eval option and stringify the Jaon
> Alexa Paramus and return a result via Stdout... well in theory, and the work
> to make pharo play better in wider ecosystem.
>
> It should work, and it seems you did make it work... but how?
>
> Like you, I am wondering when I run it on an ec2 instance (non lambda), why
> it takes so long to load? It feels like it can be faster?
>
> Tim
>
> Sent from my iPhone
>
>
>
> Sent from my iPhone
> On 27 Jun 2017, at 20:21, Sven Van Caekenberghe <[email protected]
> <mailto:[email protected]>> wrote:
>
>>
>>> On 27 Jun 2017, at 18:05, Tim Mackinnon <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>> Hi - I am trying to run a pharo image in lambda (as an experiment) -
>>> however I get an error from Pharo about not being able to write to the
>>> changes file?
>>>
>>> As I am just evaluating some code - I’m not really coding, so don’t need a
>>> changes file - is there a command line option to not require it?
>>
>> That is really strange, it should just work (it does for me using the zero
>> config scripts).
>>
>> I would try to use absolute (resolved) paths as much as possible.
>>
>>> Also, am I running pharo the most efficient way - I’m using eval on the
>>> command line and referencing a class with a class method - but is this the
>>> best way?
>>
>> Yes, that is ok.
>>
>>> Thanks,
>>>
>>> Tim
>>>
>>> "errorMessage": "Command failed: ./pharo Pharo.image eval \"Lambda
>>> processJSON:
>>> '{\"key3\":\"value3\",\"key2\":\"value2\",\"key1\":\"value1\"}'\"\n'Pharo
>>> cannot write to the changes file named /var/task/Pharo.changes.\n\nPlease
>>> check that you have write permission for this file.\n\nYou won''t be able
>>> to save this image correctly until you fix this.'\n\u001b[31mError: Can't
>>> find the requested
>>> origin\n\u001b[0mUnixResolver(PlatformResolver)>>cantFindOriginError\n[
>>> self cantFindOriginError ] in
>>> UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed: in Block: [
>>> self cantFindOriginError
>>> ]\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:\nUnixResolver>>home\n[
>>> self home / '.config' ] in UnixResolver>>preferences in Block: [ self home
>>> / '.config'
>>> ]\nUnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:\nUnixResolver>>preferences\nUnixResolver(FileSystemResolver)>>resolve:\nSystemResolver(FileSystemResolver)>>unknownOrigin:\nSystemResolver(FileSystemResolver)>>resolve:\nInteractiveResolver>>unknownOrigin:\n[
>>> self unknownOrigin: origin ] in InteractiveResolver>>resolve: in Block: [
>>> self unknownOrigin: origin
>>> ]\nIdentityDictionary(Dictionary)>>at:ifAbsent:\nInteractiveResolver>>resolve:\nFileLocator>>resolve\nFileLocator(AbstractFileReference)>>exists\nGlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>shouldCallPreviousPersistence\nGlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>ensure:\nGlobalIdentifier>>ensure\nGlobalIdentifier
>>> class>>initializeUniqueInstance\nGlobalIdentifier
>>> class>>uniqueInstance\nSystemSettingsPersistence
>>> class>>resumeSystemSettings\n[ :persistence | persistence
>>> resumeSystemSettings ] in PharoCommandLineHandler>>runPreferences in Block:
>>> [ :persistence | persistence resumeSystemSettings
>>> ...etc...\nBlockClosure>>cull:\nSystemDictionary(Dictionary)>>at:ifPresent:\nSmalltalkImage>>at:ifPresent:\nPharoCommandLineHandler>>runPreferences\nPharoCommandLineHandler>>activate\nPharoCommandLineHandler
>>> class(CommandLineHandler class)>>activateWith:\n\u001b[0m",
>>> "errorType": "Error",
>>> "stackTrace": [
>>> "'Pharo cannot write to the changes file named /var/task/Pharo.changes.",
>>> "",
>>> "Please check that you have write permission for this file.",
>>> "",
>>> "You won''t be able to save this image correctly until you fix this.'",
>>> "\u001b[31mError: Can't find the requested origin",
>>> "\u001b[0mUnixResolver(PlatformResolver)>>cantFindOriginError",
>>> "[ self cantFindOriginError ] in
>>> UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed: in Block: [
>>> self cantFindOriginError ]",
>>> "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:",
>>> "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:",
>>> "UnixResolver>>home",
>>> "[ self home / '.config' ] in UnixResolver>>preferences in Block: [ self
>>> home / '.config' ]",
>>> "UnixResolver(PlatformResolver)>>directoryFromEnvVariableNamed:or:",
>>> "UnixResolver>>preferences",
>>> "UnixResolver(FileSystemResolver)>>resolve:",
>>> "SystemResolver(FileSystemResolver)>>unknownOrigin:",
>>> "SystemResolver(FileSystemResolver)>>resolve:",
>>> "InteractiveResolver>>unknownOrigin:",
>>> "[ self unknownOrigin: origin ] in InteractiveResolver>>resolve: in
>>> Block: [ self unknownOrigin: origin ]",
>>> "IdentityDictionary(Dictionary)>>at:ifAbsent:",
>>> "InteractiveResolver>>resolve:",
>>> "FileLocator>>resolve",
>>> "FileLocator(AbstractFileReference)>>exists",
>>>
>>> "GlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>shouldCallPreviousPersistence",
>>> "GlobalIdentifierStonPersistence(GlobalIdentifierPersistence)>>ensure:",
>>> "GlobalIdentifier>>ensure",
>>> "GlobalIdentifier class>>initializeUniqueInstance",
>>> "GlobalIdentifier class>>uniqueInstance",
>>> "SystemSettingsPersistence class>>resumeSystemSettings",
>>> "[ :persistence | persistence resumeSystemSettings ] in
>>> PharoCommandLineHandler>>runPreferences in Block: [ :persistence |
>>> persistence resumeSystemSettings ...etc...",
>>> "BlockClosure>>cull:",
>>> "SystemDictionary(Dictionary)>>at:ifPresent:",
>>> "SmalltalkImage>>at:ifPresent:",
>>> "PharoCommandLineHandler>>runPreferences",
>>> "PharoCommandLineHandler>>activate",
>>> "PharoCommandLineHandler class(CommandLineHandler class)>>activateWith:",
>>> "\u001b[0m",
>>> "ChildProcess.exithandler (child_process.js:204:12)",
>>> "emitTwo (events.js:106:13)",
>>> "ChildProcess.emit (events.js:191:7)",
>>> "maybeClose (internal/child_process.js:886:16)",
>>> "Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)"
>>> ]
>>> }
>>>
>>>
>>
>>
