Class: HQ::Engine::Engine
Instance Attribute Summary collapse
Instance Method Summary
collapse
#field_to_json, #field_to_xml, #get_record_id_long, #get_record_id_short, #js_to_xml, #load_data_file, #load_data_string, #load_schema_file, #to_xml_string, #write_data_file, #xml_to_json
Instance Attribute Details
#main ⇒ Object
Returns the value of attribute main.
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# File 'lib/hq/engine/engine.rb', line 9
def main
@main
end
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#results ⇒ Object
Returns the value of attribute results.
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# File 'lib/hq/engine/engine.rb', line 11
def results
@results
end
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Instance Method Details
#abstract ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 21
def abstract
return @abstract if @abstract
abstract = {}
results.each do
|result_name, result|
abstract[result_name] =
result[:doc].root
end
return @abstract = abstract
end
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#config_dir ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 13
def config_dir() main.config_dir end
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#couch ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 14
def couch() main.couch end
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#create_default_schema ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 50
def create_default_schema
return if File.exists? schema_file
logger.trace "writing schema.xml (empty)"
File.open schema_file, "w" do |f|
f.print "<data>\n"
f.print "\t<schema name=\"schema\">\n"
f.print "\t\t<id>\n"
f.print "\t\t\t<text name=\"name\"/>\n"
f.print "\t\t</id>\n"
f.print "\t\t<fields>\n"
f.print "\t\t</fields>\n"
f.print "\t\t<table>\n"
f.print "\t\t\t<col name=\"name\"/>\n"
f.print "\t\t</table>\n"
f.print "\t</schema>\n"
f.print "</data>\n"
end
end
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#create_work_dir ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 39
def create_work_dir
if File.exist? "#{work_dir}/error-flag"
logger.warning "removing work directory due to previous error"
FileUtils.rm_rf work_dir
end
FileUtils.mkdir_p work_dir
end
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# File 'lib/hq/engine/engine.rb', line 184
def input_dump
logger.notice "loading input from database"
require "xml"
logger.time "loading input from database" do
@input_docs = {}
@input_strs = {}
FileUtils.remove_entry_secure "#{work_dir}/input" \
if File.directory? "#{work_dir}/input"
FileUtils.mkdir_p "#{work_dir}/input", :mode => 0700
rows = couch.view("root", "by_type")["rows"]
values_by_type = Hash.new
legacy = false
rows.each do |row|
if legacy
type = row["value"]["mandar_type"]
value = row["value"]
else
type = row["value"]["type"]
value = row["value"]["value"]
row["id"] =~ /^current\/(.+)$/
value["_id"] = $1
end
values_by_type[type] ||= Hash.new
values_by_type[type][value["_id"]] = value
main.continue
end
change =
staged_change
schema =
load_schema_file "#{work_dir}/schema.xml"
schema_types =
schema
.keys
.map {
|name|
name =~ /^schema\/(.+)$/ ? $1 : nil
}
.compact
.sort
.uniq
schema_types.each do
|type|
values = values_by_type[type] ||= {}
input_doc = XML::Document.new
input_doc.root = XML::Node.new "data"
if change
change["items"].each do |key, item|
case item["action"]
when "create", "update"
next unless key =~ /^#{Regexp.quote type}\//
values[key] = item["record"]
when "delete"
values.delete key
else
raise "Error"
end
end
end
sorted_values =
values.values.sort {
|a,b|
a["_id"] <=> b["_id"]
}
xml_values =
sorted_values.map {
|value|
js_to_xml schema, type, value
}
write_data_file \
"#{work_dir}/input/#{type}.xml",
xml_values
end
end
end
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# File 'lib/hq/engine/engine.rb', line 176
def input_ready
if $no_database
logger.warning "using previous input due to --no-database option"
else
input_dump
end
end
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#load_results ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 311
def load_results
@results = {}
item_path_regex =
/^#{Regexp.escape work_dir}\/output\/data\/(.+)\.xml$/
Dir["#{work_dir}/output/data/**/*.xml"].each do
|item_path|
item_path =~ item_path_regex
item_id = $1
item_doc =
XML::Document.file \
item_path,
:options => XML::Parser::Options::NOBLANKS
item_dom = item_doc.root
item_type = item_dom.name
result = @results[item_type]
unless result
result = {}
result[:doc] = XML::Document.new
result[:doc].root = XML::Node.new "data"
@results[item_type] = result
end
doc = result[:doc]
doc.root << doc.import(item_dom)
end
end
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#logger ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 15
def logger() main.logger end
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#rule_provider ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 17
def rule_provider() main.rule_provider end
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#schema_file ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 19
def schema_file() "#{work_dir}/schema.xml" end
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#staged_change ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 290
def staged_change
return nil \
unless $deploy_mode == :staged
locks =
couch.get "mandar-locks"
return nil \
unless locks
change =
locks["changes"][$deploy_role]
return nil \
unless change
return change
end
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# File 'lib/hq/engine/engine.rb', line 73
def transform
return if warn_no_config
create_work_dir
create_default_schema
old_schemas_str =
File.read schema_file
loop do
input_ready
require "hq/engine/transformer"
transformer = HQ::Engine::Transformer.new
transformer.parent = self
transformer.schema_file = schema_file
transformer.rules_dir = "#{config_dir}/rules"
transformer.include_dir = "#{config_dir}/include"
transformer.input_dir = "#{work_dir}/input"
transformer.output_dir = "#{work_dir}/output"
transform_result =
transformer.rebuild
logger.trace "writing schema.xml"
new_schemas =
transformer.data.select {
|item_id, item_xml|
item_id =~ /^(schema|schema-option|abstract-rule)\//
}
.map {
|item_id, item_xml|
item_doc = XML::Document.string item_xml
item_doc.root
}
write_data_file schema_file, new_schemas
new_schemas_str =
File.read schema_file
if new_schemas_str != old_schemas_str
old_schemas_str = new_schemas_str
new_schemas_str = nil
logger.notice "restart due to schema changes"
next
end
unless transform_result[:success]
transform_result[:missing_types].each do
|type_name|
logger.warning "type missing: #{type_name}"
end
transform_result[:remaining_rules].each do
|rule_name|
logger.warning "rule could not be run: #{rule_name}"
end
logger.die "exiting due to failed transformation"
end
load_results
return
end
end
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#warn_no_config ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 168
def warn_no_config
return false unless $no_config
return true if @warned_no_config
logger.warning "not rebuilding configuration due to --no-config option"
@warned_no_config = true
return true
end
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#work_dir ⇒ Object
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# File 'lib/hq/engine/engine.rb', line 16
def work_dir() main.work_dir end
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