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| # Copyright (c) .NET Foundation and contributors. All rights reserved. | ||
| # Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
|
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| # This is designed to be a stand-alone, out-of-process kernel, primarily used to ensure proper proxy | ||
| # handling. It requires a local `perl.exe` interpreter be available and can be used by executing | ||
| # the following in a notebook: | ||
| # | ||
| # #!connect stdio --kernel-name perl --command perl.exe kernel.pl | ||
|
|
||
| use JSON; | ||
| use Try::Tiny; | ||
|
|
||
| $|++; # autoflush | ||
|
|
||
| # run with `perl.exe kernel.pl test` to ensure the value serialization works as expected | ||
| if (length(@ARGV) > 0 && $ARGV[0] eq "test") { | ||
| test(); | ||
| } else { | ||
| main(@ARGV); | ||
| } | ||
|
|
||
| sub test { | ||
| $scalarNumber = 4; | ||
| $scalarString = "four"; | ||
| @array = (1, 2, 3); | ||
| $arrayRef = [4, 5, 6]; | ||
| %hash = ("theAnswer" => 42, "pi" => 3.14159); | ||
| $hashRef = {"theAnswer" => 42, "pi" => 3.14159}; | ||
|
|
||
| @names = ("scalarNumber", "scalarString", "array", "arrayRef", "hash", "hashRef"); | ||
| @mimeTypes = ("text/plain", "application/json"); | ||
| foreach my $mimeType (@mimeTypes) { | ||
| print "$mimeType:\n"; | ||
| foreach my $name (@names) { | ||
| print " $name: " . getStringRepresentationOfValueName($name, $mimeType) . "\n"; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| sub main { | ||
| my $kernelHost = "pid-$$"; | ||
|
|
||
| # the line "#!connect stdio ..." auto-appends these arguments | ||
| for (my $i = 0; $i < $#_; $i++) { | ||
| my $arg = $_[$i]; | ||
| if ($arg eq "--kernel-host") { | ||
| $i++; | ||
| $kernelHost = $_[$i]; | ||
| } | ||
| } | ||
|
|
||
| my $kernelUri = "kernel://$kernelHost/"; | ||
|
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||
| %suppressedValues = {}; | ||
| foreach my $valueName ( keys %main:: ) { | ||
| if (!$suppressedValues{$valueName}) { | ||
| $suppressedValues{$valueName} = 1; | ||
| } | ||
| } | ||
|
|
||
| $kernelInfo = { | ||
| "localName" => "perl", | ||
| "languageName" => "perl", | ||
| "languageVersion" => "$^V", | ||
| "displayName" => "Perl $^V", | ||
| "uri" => $kernelUri, | ||
| "supportedKernelCommands" => [ | ||
| { "name" => "RequestKernelInfo" }, | ||
| { "name" => "RequestValue" }, | ||
| { "name" => "RequestValueInfos" }, | ||
| { "name" => "SendValue" }, | ||
| { "name" => "SubmitCode" }, | ||
| { "name" => "Quit" } | ||
| ], | ||
| "supportedDirectives" => [] | ||
| }; | ||
|
|
||
| publish({ | ||
| "eventType" => "KernelReady", | ||
| "event" => {}, | ||
| "command" => undef, | ||
| "routingSlip" => [ | ||
| $kernelUri | ||
| ] | ||
| }); | ||
|
|
||
| publish({ | ||
| "eventType" => "KernelInfoProduced", | ||
| "event" => { | ||
| "kernelInfo" => $kernelInfo, | ||
| }, | ||
| "command" => undef, | ||
| "routingSlip" => [ | ||
| $kernelUri | ||
| ] | ||
| }); | ||
|
|
||
| while (<STDIN>) { | ||
| chomp; | ||
| try { | ||
| $envelope = decode_json($_); | ||
| $envelopeRoutingSlip = $envelope->{"routingSlip"}; | ||
| push(@$envelopeRoutingSlip, $kernelUri . "?tag=arrived"); | ||
| $commandType = $envelope->{'commandType'}; | ||
| if ($commandType) { | ||
| $token = $envelope->{'token'}; | ||
| $command = $envelope->{'command'}; | ||
| $succeeded = false; | ||
| if ($commandType eq "Quit") { | ||
| # | ||
| # Quit | ||
| # | ||
| return; | ||
| } elsif ($commandType eq "RequestKernelInfo") { | ||
| # | ||
| # RequestKernelInfo | ||
| # | ||
| publish({ | ||
| "eventType" => "KernelInfoProduced", | ||
| "event" => { | ||
| "kernelInfo" => $kernelInfo | ||
| }, | ||
| "command" => $envelope, | ||
| "routingSlip" => [ | ||
| $kernelUri | ||
| ] | ||
| }); | ||
| $succeeded = true; | ||
| } elsif ($commandType eq "RequestValue") { | ||
| # | ||
| # RequestValue | ||
| # | ||
| $valueName = $command->{'name'}; | ||
| $mimeType = $command->{'mimeType'}; | ||
| $formattedValue = getStringRepresentationOfValueName($valueName, $mimeType); | ||
| publish({ | ||
| "eventType" => "ValueProduced", | ||
| "event" => { | ||
| "name" => $valueName, | ||
| "formattedValue" => { | ||
| "mimeType" => $mimeType, | ||
| "value" => $formattedValue | ||
| } | ||
| }, | ||
| "command" => $envelope, | ||
| "routingSlip" => [ | ||
| $kernelUri | ||
| ] | ||
| }); | ||
| $succeeded = true; | ||
| } elsif ($commandType eq "RequestValueInfos") { | ||
| # | ||
| # RequestValueInfos | ||
| # | ||
| my @valueInfos = (); | ||
| foreach my $valueName ( keys %main:: ) { | ||
| if (!$suppressedValues{$valueName}) { | ||
| push(@valueInfos, { "name" => "$valueName" }); | ||
| } | ||
| } | ||
| publish({ | ||
| "eventType" => "ValueInfosProduced", | ||
| "event" => { | ||
| "valueInfos" => \@valueInfos | ||
| }, | ||
| "command" => $envelope, | ||
| "routingSlip" => [ | ||
| $kernelUri | ||
| ] | ||
| }); | ||
| $succeeded = true; | ||
| } elsif ($commandType eq "SendValue") { | ||
| # | ||
| # SendValue | ||
| # | ||
| $formattedValue = $command->{'formattedValue'}; | ||
| # if `application/json` or `text/json` | ||
| if ($formattedValue->{'mimeType'} =~ m/\/json$/) { | ||
| $valueName = $command->{'name'}; | ||
| $jsonValue = $formattedValue->{'value'}; | ||
| $runtimeValue = decode_json($jsonValue); | ||
| $main::{$valueName} = $runtimeValue; | ||
| $succeeded = true; | ||
| } | ||
| } elsif ($commandType eq "SubmitCode") { | ||
| # | ||
| # SubmitCode | ||
| # | ||
| $code = $command->{'code'}; | ||
| $result = eval $code; | ||
| publish({ | ||
| "eventType" => "ReturnValueProduced", | ||
| "event" => { | ||
| "formattedValues" => [{ | ||
| "mimeType" => "text/plain", | ||
| "value" => "$result" | ||
| }], | ||
| }, | ||
| "command" => $envelope, | ||
| "routingSlip" => [ | ||
| $kernelUri | ||
| ] | ||
| }); | ||
| $succeeded = true; | ||
| } else { | ||
| $succeeded = false; | ||
| } | ||
|
|
||
| push(@$envelopeRoutingSlip, $kernelUri); | ||
| if ($succeeded) { | ||
| publish({ | ||
| "eventType" => "CommandSucceeded", | ||
| "event" => {}, | ||
| "command" => $envelope, | ||
| "routingSlip" => [ | ||
| $kernelUri | ||
| ] | ||
| }); | ||
| } else { | ||
| publish({ | ||
| "eventType" => "CommandFailed", | ||
| "event" => { | ||
| "message" => "Unknown command type: $commandType" | ||
| }, | ||
| "command" => $envelope, | ||
| "routingSlip" => [ | ||
| $kernelUri | ||
| ] | ||
| }); | ||
| } | ||
| } | ||
| $eventType = $envelope->{'eventType'}; | ||
| if ($eventType) { | ||
| # TODO: respond to events | ||
| } | ||
| } catch { | ||
| print STDERR "error: $_\n"; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| sub publish { | ||
| print encode_json(\%{$_[0]}) . "\n"; | ||
| } | ||
|
|
||
| sub getStringRepresentationOfValueName { | ||
| my $valueName = shift; | ||
| my $mimeType = shift; | ||
| my $rawValue = $main::{$valueName}; | ||
| my $formattedValue; | ||
| # if `application/json` or `text/json` | ||
| if ($mimeType =~ m/\/json$/) { | ||
| my @asArray = @{getArray($rawValue)}; | ||
| my %asHash = %{getHash($rawValue)}; | ||
| if (@asArray) { | ||
| $rawValue = \@asArray; | ||
| } | ||
| elsif (%asHash) { | ||
| $rawValue = \%asHash; | ||
| } | ||
| elsif ( length do { no warnings "numeric"; $$rawValue & '' }) { | ||
| $rawValue = $$rawValue + 0; | ||
| } | ||
| else { | ||
| $rawValue = $$rawValue; | ||
| } | ||
|
|
||
| $formattedValue = encode_json($rawValue); | ||
| } | ||
| else { | ||
| # assume text/plain | ||
| my @asArray = @{getArray($rawValue)}; | ||
| my %asHash = %{getHash($rawValue)}; | ||
| if (@asArray) { | ||
| $formattedValue = "(" . join(", ", @asArray) . ")"; | ||
| } | ||
| elsif (%asHash) { | ||
| $formattedValue = "(" . join(", ", map { "$_ => $asHash{$_}" } keys %asHash) . ")"; | ||
| } | ||
| else { | ||
| $formattedValue = "" . $$rawValue; | ||
| } | ||
| } | ||
|
|
||
| return $formattedValue; | ||
| } | ||
|
|
||
| sub getArray { | ||
| my $rawValue = shift; | ||
| if (ref($$rawValue) eq "ARRAY") { | ||
| return \@$$rawValue; | ||
| } | ||
| elsif (@$rawValue) { | ||
| return \@$rawValue; | ||
| } | ||
|
|
||
| return undef; | ||
| } | ||
|
|
||
| sub getHash { | ||
| my $rawValue = shift; | ||
| if (ref($$rawValue) eq "HASH") { | ||
| return \%$$rawValue; | ||
| } | ||
| elsif (%$rawValue) { | ||
| return \%$rawValue; | ||
| } | ||
|
|
||
| return undef; | ||
| } |
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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