/
Rules.pm
1588 lines (1227 loc) · 42.1 KB
/
Rules.pm
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package Kynetx::Rules;
# file: Kynetx/Rules.pm
#
# This file is part of the Kinetic Rules Engine (KRE)
# Copyright (C) 2007-2011 Kynetx, Inc.
#
# KRE is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be
# useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
# PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public
# License along with this program; if not, write to the Free
# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#
use strict;
#use warnings;
no warnings qw(uninitialized);
use Data::UUID;
use Log::Log4perl qw(get_logger :levels);
use JSON::XS;
use Digest::MD5 qw(md5 md5_hex);
use AnyEvent;
use Storable qw/freeze/;
use Kynetx::Parser qw(:all);
use Kynetx::PrettyPrinter qw(:all);
use Kynetx::JavaScript;
use Kynetx::Expressions;
use Kynetx::Json qw(:all);
use Kynetx::Util qw(:all);
use Kynetx::Memcached qw(:all);
use Kynetx::Datasets qw(:all);
use Kynetx::Session qw(:all);
use Kynetx::Rids qw(:all);
use Kynetx::Modules qw(:all);
use Kynetx::Actions;
use Kynetx::Authz;
use Kynetx::Events;
use Kynetx::Log qw(:all);
use Kynetx::Request qw(:all);
use Kynetx::Repository;
use Kynetx::Environments qw(:all);
use Kynetx::Directives;
use Kynetx::Postlude;
use Kynetx::Response;
use Kynetx::ExecEnv;
use Kynetx::JavaScript::AST qw/:all/;
use Kynetx::Modules::System qw/:all/;
use Kynetx::Modules::RuleEnv qw/:all/;
use Kynetx::Actions::LetItSnow;
use Kynetx::Actions::JQueryUI;
use Kynetx::Actions::FlippyLoo;
use Kynetx::Metrics::Datapoint;
use Storable qw(dclone);
use Data::Dumper;
$Data::Dumper::Indent = 1;
use Exporter;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
our $VERSION = 1.00;
our @ISA = qw(Exporter);
our %EXPORT_TAGS = (
all => [
qw(
process_rules
eval_rule
eval_globals
get_rule_set
)
]
);
our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
sub process_rules {
my ( $r, $method, $rids, $eid ) = @_;
my $logger = get_logger();
$r->subprocess_env( START_TIME => Time::HiRes::time );
if ( Kynetx::Configure::get_config('RUN_MODE') eq 'development' ) {
# WARNING: THIS CHANGES THE USER'S IP NUMBER FOR TESTING!!
my $test_ip = Kynetx::Configure::get_config('TEST_IP');
$r->connection->remote_ip($test_ip);
$logger->debug( "In development mode using IP address ",
$r->connection->remote_ip() );
}
my $req_info = Kynetx::Request::build_request_env( $r, $method, $rids );
$req_info->{'eid'} = $eid;
# get a session, if _sid param is defined it will override cookie
my $session = process_session( $r, $req_info->{'kntx_token'} );
# initialization
my $js = '';
my $dd = Kynetx::Response->create_directive_doc( $req_info->{'eid'} );
my $rule_env = mk_initial_env();
# my @rids = split( /;/, $rids );
# if we sort @rids we change ruleset priority
foreach my $rid_info ( @{ $req_info->{'rids'} } ) {
my $rid = get_rid($rid_info);
$logger->debug(
"-------------------------------------------Schedule $rid");
Log::Log4perl::MDC->put( 'site', $rid );
my $schedule = mk_schedule( $req_info, $rid_info );
$js .= eval {
process_schedule( $r, $schedule, $session, $eid, $req_info, $dd );
};
if ($@) {
Kynetx::Errors::raise_error( $req_info, $session, 'error',
"Ruleset $rid failed: $@" );
}
}
Kynetx::Response::respond( $r, $req_info, $session, $js, $dd, "Ruleset" );
}
# added $req_info to args because the $req_info from task is now a copy
# so it doesn't have all_actions built up with all of the actions in the request
sub process_schedule {
my ( $r, $schedule, $session, $eid, $req_info, $dd, $overmetric ) = @_;
my $logger = get_logger();
my $ast = Kynetx::JavaScript::AST->new($eid);
my ( $ruleset, $rule_env, $rid );
$rid = '';
my $current_rid = '';
my $env_stash = {};
#$logger->debug( "Schedule: ", Dumper($schedule) );
my $ktoken = Kynetx::Persistence::KToken::get_token($session);
while ( my $task = $schedule->next() ) {
if (defined $overmetric) {
my $c = $overmetric->count;
$overmetric->count(++$c);
}
my $task_metric =
new Kynetx::Metrics::Datapoint( { 'series' => 'ps-task' } );
$task_metric->start_timer();
$task_metric->push($task->{'vars'},$task->{'vals'});
#$logger->debug( "[task] ", sub { Dumper($task) } );
# set up new context for this task
if ($req_info) {
$logger->info("Context switch to ",
$task->{"rid"}, ":", $task->{"rule"}->{"name"},
" for event ",
$task->{"req_info"}->{"domain"}, ":", $task->{"req_info"}->{"eventtype"}
);
my $task_req_info = {};
Kynetx::Request::set_event_domain($task_req_info,
Kynetx::Request::get_event_domain($task->{'req_info'})
);
Kynetx::Request::set_event_type($task_req_info,
Kynetx::Request::get_event_type($task->{'req_info'})
);
foreach my $n (@{ Kynetx::Request::get_attr_names($task->{'req_info'}) }) {
$logger->debug("Adding name ", $n);
Kynetx::Request::add_event_attr($task_req_info,
$n,
Kynetx::Request::get_attr($task->{'req_info'}, $n)
);
}
# $logger->debug("Task attributes ", sub {Dumper $task_req_info});
Kynetx::Request::merge_req_env( $req_info, $task_req_info );
}
else {
$logger->warn("Warning: We are processing a schedule with no request info object!!!");
$req_info = $task->{'req_info'};
}
$rid = $task->{'rid'};
my $rid_version = $task->{'ver'};
$req_info->{'rid'} =
mk_rid_info( $req_info, $rid, { 'version' => $rid_version } );
$logger->debug( "Using RID ",
Kynetx::Rids::print_rid_info( $req_info->{'rid'} ) );
$task_metric->rid(get_rid( $req_info->{'rid'} ));
$task_metric->token($ktoken->{'ktoken'});
unless ( $rid eq $current_rid ) {
my $r_metric =
new Kynetx::Metrics::Datapoint( { 'series' => 'ps-task-contextswitch' } );
$r_metric->start_timer();
$r_metric->rid($rid);
$r_metric->token($ktoken->{'ktoken'});
$r_metric->eid($req_info->{'eid'});
#context switch
# we only do this when there's a new RID
# save info from last context
$ast->add_resources( $current_rid, $req_info->{'resources'} );
# for each context switch, we need a new place to put the JS
# that is generated for the rules in that context so that we
# can create JS in the order in which the rules execute. At the
# same time, we want to avoid re-executing and re-generating
# the JS for meta and global blocks.
# updated context counter
$ast->update_context($rid);
# $logger->debug("Task request: ", Dumper $task->{'req_info'});
# we use this to modify the schedule on-the-fly
$req_info->{'schedule'} = $schedule;
# $ruleset = $task->{'ruleset'};
$ruleset = Kynetx::Rules::get_rule_set($req_info);
# rid to raise errors to
$req_info->{'errorsto'} = $ruleset->{'meta'}->{'errors'};
# store so we don't have to grab it again
stash_ruleset( $req_info, $ruleset );
if (
(
$ruleset->{'meta'}->{'logging'}
&& $ruleset->{'meta'}->{'logging'} eq "on"
)
)
{
$logger->debug("Turning on logging for $rid");
Kynetx::Util::turn_on_logging();
}
else {
$logger->debug("Turning off logging for $rid");
Kynetx::Util::turn_off_logging();
}
Log::Log4perl::MDC->put( 'site', $rid );
$logger->debug( "Processing rules for RID " . $rid );
my $r_metric5 =
new Kynetx::Metrics::Datapoint( { 'series' => 'ps-task-contextswitch-get-rule-env' } );
$r_metric5->start_timer();
$r_metric5->rid($rid);
$r_metric5->token($ktoken->{'ktoken'});
$r_metric5->eid($req_info->{'eid'});
$rule_env =
get_rule_env( $req_info, $ruleset, $session, $ast, $env_stash );
$r_metric5->stop_and_store();
$req_info->{'rule_count'} = 0;
$req_info->{'selected_rules'} = [];
$current_rid = $rid;
$logger->debug("Context switch complete; processing $current_rid");
$r_metric->stop_and_store();
} # done with context
my $rule = $task->{'rule'};
my $rule_name = $rule->{'name'};
$task_metric->rulename($rule_name);
$task_metric->eid($req_info->{'eid'});
Log::Log4perl::MDC->put( 'rule', $rule_name);
$logger->trace( "[rules] foreach pre: ",
sub { Dumper( $rule->{'pre'} ) } );
# set by eval_control_statement in Actions.pm
if ($req_info->{ get_rid( $req_info->{'rid'} ) . ':__KOBJ_EXEC_LAST' }) {
$task_metric->stop_and_store();
last;
}
$rule->{'state'} ||= 'active';
my $this_rule_env;
$logger->debug( "Rule $rule_name is " . $rule->{'state'} );
if (
$rule->{'state'} eq 'active'
|| ( $rule->{'state'} eq 'test'
&& $req_info->{'mode'}
&& $req_info->{'mode'} eq 'test' )
)
{ # optimize??
$req_info->{'rule_count'}++;
$logger->debug("[selected] $rule->{'name'} ");
# $logger->trace("[rules] ", sub { Dumper($rule) });
push @{ $req_info->{'selected_rules'} }, $rule->{'name'};
my $select_vars = $task->{'vars'};
my $captured_vals = $task->{'vals'};
# store the captured values from the precondition to the env
my $cap = 0;
my $sjs = '';
foreach my $var ( @{$select_vars} ) {
$var =~ s/^\s*(.+)\s*/$1/; # trim whitspace
$logger->debug("[select var] $var -> $captured_vals->[$cap]");
$this_rule_env->{$var} = $captured_vals->[$cap];
$sjs .= Kynetx::JavaScript::gen_js_var(
$var,
Kynetx::JavaScript::gen_js_expr(
Kynetx::Expressions::exp_to_den(
$captured_vals->[$cap]
)
)
);
$cap++;
}
my $new_req_info =
Kynetx::Request::merge_req_env( $task->{'req_info'}, $req_info );
my $js;
if (
Kynetx::Authz::is_authorized(
get_rid( $req_info->{'rid'} ),
$ruleset, $session
)
)
{
my $er_metric =
new Kynetx::Metrics::Datapoint( { 'series' => 'ps-task-evalrule' } );
$er_metric->start_timer();
$er_metric->rid(get_rid( $req_info->{'rid'} ));
$er_metric->token($ktoken->{'ktoken'});
$er_metric->eid($req_info->{'eid'});
$js = eval {
eval_rule(
$r,
#$new_req_info,
$req_info,
extend_rule_env( $this_rule_env, $rule_env ),
$session,
$rule,
$sjs, # pass in the select JS to be inside rule
$dd
);
};
if ($@) {
$logger->error( "Ruleset $rid failed: ", $@ );
}
$er_metric->stop_and_store();
}
else {
$logger->debug("Sending activation notice for $rid");
$js = eval {
Kynetx::Authz::authorize_message( $task->{'req_info'},
$session, $ruleset );
};
if ($@) {
$logger->error( "Authorization failed for $rid: ", $@ );
}
# Since this RID isn't auhtorized yet, skip the rest...
$schedule->delete_rid($rid);
}
$ast->add_rule_js( $rid, $js );
}
else {
$logger->debug("[not selected] $rule->{'name'} ");
}
$task_metric->stop_and_store();
}
# process for final context
$ast->add_resources( $current_rid, $req_info->{'resources'} );
$logger->debug( "Finished processing rules for " . $rid );
return $ast->generate_js();
}
sub eval_meta {
my ( $req_info, $ruleset, $rule_env, $session, $env_stash ) = @_;
my $logger = get_logger();
$logger->trace("META BLOCK EVALUATION");
my $js = "";
my $rid = get_rid( $req_info->{'rid'} );
my $this_js;
$req_info->{"meta:$rid:ruleset_name"} = $ruleset->{'ruleset_name'};
$req_info->{"meta:$rid:name"} = $ruleset->{'meta'}->{'name'};
$req_info->{"meta:$rid:author"} = $ruleset->{'meta'}->{'author'};
$req_info->{"meta:$rid:description"} = $ruleset->{'meta'}->{'description'};
# process keys now so that they're available for use in configuring modules
if ( $ruleset->{'meta'}->{'keys'} ) {
( $this_js, $rule_env ) =
Kynetx::Keys::process_keys( $req_info, $rule_env, $ruleset );
$js .= $this_js;
}
if ( $ruleset->{'meta'}->{'use'} ) {
( $this_js, $rule_env ) =
eval_use( $req_info, $ruleset, $rule_env, $session, $env_stash, undef);
$js .= $this_js;
}
# $logger->debug("Rule env: ", sub { Dumper $rule_env} );
return ( $js, $rule_env );
}
sub eval_use {
my ( $req_info, $ruleset, $rule_env, $session, $env_stash, $using_rid) = @_;
my $logger = get_logger();
my $js = "";
my $use = $ruleset->{'meta'}->{'use'};
my $rid = get_rid( $req_info->{'rid'} );
$using_rid ||= $rid; # current rid if not set
my $this_js;
foreach my $u ( @{$use} ) {
# just put resources in $req_info and mk_registered_resources will grab them
if ( $u->{'type'} eq 'resource' ) {
$req_info->{'resources'}->{ $u->{'resource'}->{'location'} } =
{ 'type' => $u->{'resource_type'} };
}
elsif ( $u->{'type'} eq 'module' ) {
$logger->trace( "module struct: ", sub { Dumper($u) } );
# $logger->debug("Doing module ", sub {Dumper $env_stash});
# side effects the rule env.
( $this_js, $rule_env ) =
eval_use_module( $req_info, $rule_env, $session, $u->{'name'},
$u->{'alias'}, $u->{'modifiers'}, $u->{'version'}, $env_stash,
$using_rid
);
# don't include the module JS in the results.
# $js .= $this_js;
}
else {
$logger->error( "Unknown type for 'use': ", $u->{'type'} );
}
}
# $logger->debug("Calculated env ", Dumper $rule_env);
return ( $js, $rule_env );
}
sub _module_sig {
my ($name,$alias, $modifiers, $mversion) = @_;
return md5_hex( $name . $mversion . $alias . freeze $modifiers);
}
sub eval_use_module {
my (
$req_info, $rule_env, $session, $name,
$alias, $modifiers, $mversion, $env_stash, $using_rid
) = @_;
my $logger = get_logger();
my $ktoken = Kynetx::Persistence::KToken::get_token($session);
my $metric =
new Kynetx::Metrics::Datapoint( { 'series' => 'use-module' } );
$metric->start_timer();
$metric->rid(get_rid( $req_info->{'rid'} ));
$metric->token($ktoken->{'ktoken'});
$metric->eid($req_info->{'eid'});
$mversion ||= 'prod';
my $module_sig = _module_sig($name,$alias,$modifiers, $mversion);
#md5_hex( $name . $mversion . $alias . freeze $modifiers);
my $memd = get_memd();
my $self_rid = get_rid( $req_info->{'rid'} );
my $mod_rid = $name;
$logger->trace("$self_rid uses $mod_rid");
my($module_cache, $module_rule_env, $provided, $js, $export_keys);
if (Kynetx::Request::module_loaded($module_sig, $req_info)) {
my $module_data = Kynetx::Request::get_module($module_sig, $req_info);
$module_rule_env = $module_data->{"module_env"};
$provided = $module_data->{"provides"} || {};
$js = $module_data->{"js"} || '';
$export_keys = $module_data->{"export_keys"} || {};
} else {
$module_cache = Kynetx::Modules::RuleEnv::get_module_cache($module_sig, $memd);
$module_rule_env = $module_cache->{Kynetx::Modules::RuleEnv::get_re_key($module_sig)};
$provided = $module_cache->{Kynetx::Modules::RuleEnv::get_pr_key($module_sig)} || {};
$js = $module_cache->{Kynetx::Modules::RuleEnv::get_js_key($module_sig)} || '';
$export_keys = $module_cache->{Kynetx::Modules::RuleEnv::get_export_keys_key($module_sig)} || {};
}
# build a list of module sigs associated with a calling rid/version
my $msig_list = Kynetx::Modules::RuleEnv::get_msig_list($req_info, $memd);
my $namespace_name = $Kynetx::Modules::name_prefix . ( $alias || $name );
if (! (defined $module_rule_env && $msig_list->{$module_sig})) {
# $logger->debug("Module sig $module_sig", sub {Dumper $env_stash});
# if (! defined $env_stash->{$module_sig}) {
$logger->debug("----- Loading Module $name.$mversion as $alias -------");
my $js = '';
my $this_js;
# module hierarchy can look like this:
#
# a -> b
# |
# +--> b
#
# but not this
#
# a -> b -> b ...
#
# or this
#
# a -> b -> c -> ... -> b
#
# sanity check, we're not in a big loop
foreach my $module_name (
@{ lookup_rule_env( '_module_list', $rule_env ) || [] } )
{
$logger->debug("Seeing module $module_name for $name");
if ( $module_name eq $name ) {
$logger->debug("$name has already been used as a module");
return ( $js, $rule_env );
}
}
# Default to the production version of modules
my $use_ruleset =
Kynetx::Rules::get_rule_set( $req_info, 1, $name, $mversion,
{ 'in_module' => 1 } );
# $logger->trace( "Using ", sub { Dumper $use_ruleset} );
my $provided_array = $use_ruleset->{'meta'}->{'provide'}->{'names'} || [];
foreach my $name ( @{$provided_array} ) {
$provided->{$name} = 1;
}
# replaced with...
# $provided = {map {$_ => 1} @{$use_ruleset->{'meta'}->{'provide'}->{'names'} || []}};
if (scalar @{$provided_array} < 1) {
$logger->debug("WARNING: module $name provides no functions" );
}
my $configuration = $use_ruleset->{'meta'}->{'configure'}->{'configuration'}
|| [];
# $logger->trace( "conf ", sub { Dumper $configuration} );
$logger->debug( "Module provides: ",
sub { join( ",", @{$use_ruleset->{'meta'}->{'provide'}->{'names'} || []} ) } );
# create the module rule_env by extending an empty env with the config
my @mod_list = @{ $rule_env->{'_module_list'} || [] };
push( @mod_list, $name );
my $init_mod_env = extend_rule_env(
{
# '_callingRID' => get_rid( $req_info->{'rid'} ),
# '_callingVersion' => $req_info->{'rule_version'},
'_moduleRID' => $name,
'_moduleVersion' => $mversion,
'_inModule' => 'true',
'_module_list' => \@mod_list,
},
empty_rule_env()
);
$module_rule_env =
set_module_configuration( $req_info, $rule_env, $session, $init_mod_env,
$configuration, $modifiers || [] );
# put any keys in the module rule_env *before* evaling the globals
if ( $use_ruleset->{'meta'}->{'keys'} ) {
( $this_js, $module_rule_env ) =
Kynetx::Keys::process_keys( $req_info, $module_rule_env,
$use_ruleset );
$js .= $this_js;
}
my $is_cachable;
# Check to see if this module exposes any keys to external ruleset
if ($use_ruleset->{'meta'}->{'provides_keys'}) {
my $key_permissions = $use_ruleset->{'meta'}->{'provides_keys'};
# $logger->debug("Exposing keys to parent rid: $using_rid for $name ", sub {Dumper $key_permissions});
my $permitted;
foreach my $k (keys %{ $key_permissions }) {
foreach my $r (@{ $key_permissions->{$k}}) {
if ($r eq $using_rid){
$logger->debug("Storing key $k for rid $using_rid");
push (@{$permitted}, $k);
}
}
}
if (defined $permitted ) {
foreach my $obj (@{$permitted}) {
my $tuple = ();
push(@{$tuple},$name);
push (@{$tuple},Kynetx::Keys::get_key($req_info,$module_rule_env,$obj));
$export_keys->{$obj} = $tuple;
}
} else {
$logger->debug("Ruleset $using_rid is NOT permitted by $name allowed: ", sub{Dumper $key_permissions});
}
}
if ( $use_ruleset->{'meta'}->{'use'} ) {
( $this_js, $module_rule_env ) =
eval_use( $req_info, $use_ruleset, $module_rule_env, $session,
$env_stash, $name);
$js .= $this_js;
}
# $logger->debug("Module env ", Dumper $module_rule_env);
# eval the module's global block
if ( $use_ruleset->{'global'} ) {
( $js, $module_rule_env, $is_cachable ) =
process_one_global_block( $req_info, $use_ruleset->{'global'},
$module_rule_env, $session, $namespace_name, $provided );
}
if ($is_cachable) {
$logger->debug("Caching module $name.$mversion...");
Kynetx::Modules::RuleEnv::set_module_cache($module_sig, $req_info, $memd,
$js, $provided, $module_rule_env, $export_keys, $name, $mversion);
} else {
$logger->debug("Module $name.$mversion is not cachable...");
}
} else {
# $logger->debug("Cached module env ", sub {Dumper $module_rule_env});
# $logger->debug("Cached provided hash ", sub{Dumper $provided});
$logger->debug("Using cached rule env for module $name.$mversion with signature $module_sig");
}
# just put sig in where env was before
$rule_env = extend_rule_env( $namespace_name, $module_sig, $rule_env);
# put the module_env in the $req_info
$req_info = Kynetx::Request::put_module_in_request_info($module_sig,
$name,
$mversion,
$provided,
$module_rule_env,
$js,
$export_keys,
$req_info
);
# $rule_env = extend_rule_env( $namespace_name, $module_rule_env,
# extend_rule_env( $namespace_name . '_provided', $provided, $rule_env )
# );
# Place the exported keys in the current key environment
foreach my $kkey (keys %{$export_keys}) {
my $tuple = $export_keys->{$kkey};
my $source = $tuple->[0];
my $val = $tuple->[1];
my $this_js;
$logger->debug("Module $name exports key $kkey");
($this_js, $rule_env) = Kynetx::Keys::insert_key($req_info,
$rule_env,
$kkey,
$val);
$js .= $this_js;
}
$metric->stop_and_store();
return ( $js, $rule_env );
}
# set_module_configuration is used by eval_use_module and build_composed_action
sub set_module_configuration {
my ( $req_info, $rule_env, $session, $mod_rule_env, $config_array,
$modifiers )
= @_;
my $logger = get_logger();
my $configuration = {};
$logger->trace(
"Config and modifiers: ",
sub { Dumper $config_array},
sub { Dumper $modifiers}
);
foreach my $conf ( @{$config_array} ) {
# config values are executed in module's rule env (empty)
$configuration->{ $conf->{'name'} } = Kynetx::Expressions::den_to_exp(
Kynetx::Expressions::eval_expr(
$conf->{'value'}, $mod_rule_env, 'module_config',
$req_info, $session
)
);
}
foreach my $mod ( @{$modifiers} ) {
# only insert names that are already there (honor config)
if ( defined $configuration->{ $mod->{'name'} } ) {
# modifiers are executed in rule's environment
$configuration->{ $mod->{'name'} } =
Kynetx::Expressions::den_to_exp(
Kynetx::Expressions::eval_expr(
$mod->{'value'}, $rule_env, 'module_config',
$req_info, $session
)
);
}
}
$logger->trace( "Configuration ", sub { Dumper $configuration} );
$mod_rule_env = extend_rule_env( $configuration, $mod_rule_env );
return $mod_rule_env;
}
sub eval_globals {
my ( $req_info, $ruleset, $rule_env, $session ) = @_;
my $logger = get_logger();
$logger->trace("GLOBAL BLOCK EVALUATION");
my $js = "";
my $temp_js = '';
my $is_cachable;
if ( $ruleset->{'global'} ) {
( $temp_js, $rule_env, $is_cachable ) =
process_one_global_block( $req_info, $ruleset->{'global'}, $rule_env,
$session );
$js .= $temp_js;
}
return ( $js, $rule_env, $is_cachable );
}
sub process_one_global_block {
my ( $req_info, $globals, $rule_env, $session, $namespace ) = @_;
my $logger = get_logger();
my $js = "";
my $cachable = 1;
# make this act like let* not let
my @vars;
foreach my $g ( @{$globals} ) {
$g->{'lhs'} = $g->{'name'} unless ( defined $g->{'lhs'} );
if ( defined $g->{'lhs'} ) {
if ( defined $g->{'type'} && $g->{'type'} eq 'datasource' ) {
push @vars, 'datasource:' . $g->{'lhs'};
}
else {
push @vars, $g->{'lhs'};
}
}
}
my @empty_vals = map { '' } @vars;
$rule_env = extend_rule_env( \@vars, \@empty_vals, $rule_env );
my $ns = $namespace || "";
$logger->debug("Namespaced: $ns");
$logger->debug( "Global vars: ", join( ", ", @vars ) );
foreach my $g ( @{$globals} ) {
my $this_js = '';
my $var = '';
my $val = 0;
if ( !defined $namespace ) {
# only want these when we're not loading a module
if ( $g->{'emit'} ) { # emit
$this_js =
Kynetx::Expressions::eval_emit( $g->{'emit'} ) . "\n";
}
elsif ( defined $g->{'type'} && $g->{'type'} eq 'css' ) {
$this_js = "KOBJ.css("
. Kynetx::JavaScript::mk_js_str( $g->{'content'} ) . ");\n";
$cachable &&= 1
}
}
if ( defined $g->{'type'}
&& ( $g->{'type'} eq 'expr' || $g->{'type'} eq 'here_doc' ) )
{
$logger->trace("Must be a decl: Expr: $g->{'type'}");
# side-effects the rule-env
$this_js = Kynetx::Expressions::eval_one_decl( $req_info, $rule_env,
'global', $session, $g );
$cachable &&= Kynetx::Expressions::cachable_decl($g);
$logger->trace( "Show rule_env side effects: ",
sub { Dumper($rule_env) } );
}
elsif ( defined $g->{'type'} && $g->{'type'} eq 'datasource' ) {
$rule_env->{ 'datasource:' . $g->{'lhs'} } = $g;
$cachable &&= 1
}
elsif ( defined $g->{'type'} && $g->{'type'} eq 'dataset' ) {
my $new_ds = Kynetx::Datasets->new($g);
# by commenting this test out, we put the JS for the dataset directly in the generate JS
if ( !$new_ds->is_global() ) {
$new_ds->load($req_info);
$new_ds->unmarshal();
$this_js = $new_ds->make_javascript();
# $logger->debug("Javascript for dataset declaration ", $new_ds->name, " -> ", $this_js);
$var = $new_ds->name;
if ( defined $new_ds->json ) {
$val = $new_ds->json;
}
else {
$val = $new_ds->sourcedata;
}
#($this_js, $var, $val) = mk_dataset_js($g, $req_info, $rule_env);
# yes, this is cheating and breaking the abstraction, but it's fast
$rule_env->{$var} = $val;
}
}
else {
$logger->debug( "Fell through: Expr: ", $g->{'type'} || "" );
}
$js .= $this_js;
}
$logger->trace( " rule_env: ", sub {Dumper($rule_env)} );
return ( $js, $rule_env, $cachable );
}
sub eval_rule {
my ( $r, $req_info, $rule_env, $session, $rule, $initial_js, $dd ) = @_;
Log::Log4perl::MDC->put( 'rule', $rule->{'name'} );
my $logger = get_logger();
$logger->info("-----***---- begin rule execution: $rule->{'name'} ----***-----");
my $js = '';
my $rule_metric = new Kynetx::Metrics::Datapoint( {
'eid' => $req_info->{'eid'},
'series' => 'rule-eval'
});
$rule_metric->start_timer();
$rule_metric->rid(get_rid( $req_info->{'rid'}));
$rule_metric->rulename($rule->{'name'});
my $ktoken = Kynetx::Persistence::KToken::get_token($session);
$rule_metric->token($ktoken->{'ktoken'});
# keep track of these for each rule
$req_info->{'actions'} = [];
$req_info->{'labels'} = [];
$req_info->{'tags'} = [];
# assume the rule doesn't fire. We will change this if it EVER fires in this eval
$req_info->{ $rule->{'name'} . '_result' } = 'notfired';
# $logger->debug("Rule pre ", sub {Dumper $rule->{'pre'}});
if ( $rule->{'pre'}
&& scalar @{ $rule->{'pre'} } > 0
&& !( $rule->{'inner_pre'} || $rule->{'outer_pre'} ) )
{
# $logger->debug(
# "Pre optimization ",
# sub { Dumper $rule->{'pre'} },
# sub { Dumper $rule->{'inner_pre'} },
# sub { Dumper $rule->{'outer_pre'} }
# );
$logger->debug("Rule not pre optimized...");
optimize_pre($rule);
}
my $outer_tentative_js = '';
# this loads the rule_env.
( $outer_tentative_js, $rule_env ) =
Kynetx::Expressions::eval_prelude( $req_info, $rule_env, $rule->{'name'},
$session, $rule->{'outer_pre'} );
$rule->{'pagetype'}->{'foreach'} = []
unless defined $rule->{'pagetype'}->{'foreach'};
# clear the final flag before we get started...
Kynetx::Request::clr_final_flag($req_info);
my $execenv = Kynetx::ExecEnv::build_exec_env();
# set condition var for AnyEvent, check after loop...
my $cv = AnyEvent->condvar();
$execenv->set_condvar($cv);
$cv->begin( sub { shift->send("All threads complete") } );
$js .= eval_foreach(
$r,
$req_info,
$rule_env,
$session,
$rule,
$dd,
scalar @{ $rule->{'pagetype'}->{'foreach'} }, # final_count
$execenv,
@{ $rule->{'pagetype'}->{'foreach'} },
);