Class: Rhoconnect::Handler::Query::Runner
- Inherits:
-
Object
- Object
- Rhoconnect::Handler::Query::Runner
- Defined in:
- lib/rhoconnect/handler/query/runner.rb
Direct Known Subclasses
Instance Attribute Summary collapse
-
#client ⇒ Object
Returns the value of attribute client.
-
#engine ⇒ Object
Returns the value of attribute engine.
-
#p_size ⇒ Object
Returns the value of attribute p_size.
-
#params ⇒ Object
Returns the value of attribute params.
-
#source ⇒ Object
Returns the value of attribute source.
Instance Method Summary collapse
- #ack_token(token) ⇒ Object
- #build_page {|res| ... } ⇒ Object
-
#compute_errors_page ⇒ Object
Computes errors for client and stores a copy as errors page.
-
#compute_links_page ⇒ Object
Computes create links for a client and stores a copy as links page.
-
#compute_metadata ⇒ Object
Computes the metadata sha1 and returns metadata if client’s sha1 doesn’t match source’s sha1.
-
#compute_page ⇒ Object
Computes diffs between master doc and client doc, trims it to page size, stores page, and returns page as hash.
-
#compute_page_bruteforce ⇒ Object
Computes diffs between master doc and client doc, trims it to page size, stores page, and returns page as hash.
- #format_result(token, progress_count, total_count, res) ⇒ Object
-
#initialize(model, client, route_handler, params = {}) ⇒ Runner
constructor
A new instance of Runner.
-
#resend_page(token = nil) ⇒ Object
Resend token for a client, also sends exceptions.
- #run ⇒ Object
-
#schema_changed? ⇒ Boolean
Checks if schema changed.
- #send_new_page ⇒ Object
- #send_new_page_bruteforce ⇒ Object
Constructor Details
#initialize(model, client, route_handler, params = {}) ⇒ Runner
Returns a new instance of Runner.
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# File 'lib/rhoconnect/handler/query/runner.rb', line 8 def initialize(model,client,route_handler, params = {}) raise ArgumentError.new(UNKNOWN_CLIENT) unless client raise ArgumentError.new(UNKNOWN_SOURCE) unless (model and model.source) raise ArgumentError.new('Invalid app for source') unless model.source.app @source,@client,@p_size = model.source,client,params[:p_size] ? params[:p_size].to_i : 500 @client.last_sync = Time.now if @client @params = params @engine = Rhoconnect::Handler::Query::Engine.new(model, route_handler, @params) end |
Instance Attribute Details
#client ⇒ Object
Returns the value of attribute client.
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# File 'lib/rhoconnect/handler/query/runner.rb', line 6 def client @client end |
#engine ⇒ Object
Returns the value of attribute engine.
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# File 'lib/rhoconnect/handler/query/runner.rb', line 6 def engine @engine end |
#p_size ⇒ Object
Returns the value of attribute p_size.
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# File 'lib/rhoconnect/handler/query/runner.rb', line 6 def p_size @p_size end |
#params ⇒ Object
Returns the value of attribute params.
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# File 'lib/rhoconnect/handler/query/runner.rb', line 6 def params @params end |
#source ⇒ Object
Returns the value of attribute source.
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# File 'lib/rhoconnect/handler/query/runner.rb', line 6 def source @source end |
Instance Method Details
#ack_token(token) ⇒ Object
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# File 'lib/rhoconnect/handler/query/runner.rb', line 51 def ack_token(token) stored_token = @client.get_value(:page_token) if stored_token if token and stored_token == token @client.put_value(:page_token,nil) @client.flush_data(:schema_page) @client.flush_data(:metadata_page) @client.flush_data(:create_links_page) @client.flush_data(:page) @client.flush_data(:delete_page) _delete_errors_page return true end else return true end false end |
#build_page {|res| ... } ⇒ Object
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# File 'lib/rhoconnect/handler/query/runner.rb', line 82 def build_page res = {} yield res res.reject! {|key,value| value.nil? or value.empty?} res.merge!(_send_errors) res end |
#compute_errors_page ⇒ Object
Computes errors for client and stores a copy as errors page
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# File 'lib/rhoconnect/handler/query/runner.rb', line 223 def compute_errors_page ['create','update','delete'].each do |operation| @client.lock("#{operation}_errors") do |c| c.rename("#{operation}_errors","#{operation}_errors_page") end end @client.lock("update_rollback") do |c| c.rename("update_rollback","update_rollback_page") end end |
#compute_links_page ⇒ Object
Computes create links for a client and stores a copy as links page
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# File 'lib/rhoconnect/handler/query/runner.rb', line 235 def compute_links_page @client.lock(:create_links) do |c| c.rename(:create_links,:create_links_page) c.get_data(:create_links_page) end end |
#compute_metadata ⇒ Object
Computes the metadata sha1 and returns metadata if client’s sha1 doesn’t match source’s sha1
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# File 'lib/rhoconnect/handler/query/runner.rb', line 162 def , = @source.lock(:metadata) do |s| [s.get_value(:metadata_sha1),s.get_value(:metadata)] end return if @client.get_value(:metadata_sha1) == @client.put_value(:metadata_sha1,) @client.put_value(:metadata_page,) end |
#compute_page ⇒ Object
Computes diffs between master doc and client doc, trims it to page size, stores page, and returns page as hash
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# File 'lib/rhoconnect/handler/query/runner.rb', line 175 def compute_page inserts_elements_map,deletes_elements_map,total_count = @source.lock(:md) do |s| inserts_elements_map = @client.get_diff_data(:cd,s.docname(:md),@p_size) total_count = s.get_value(:md_size).to_i deletes_elements_map = s.get_diff_data(:md,@client.docname(:cd),@p_size) [inserts_elements_map,deletes_elements_map,total_count] end # until sync is not done - set cd_size to 0 # once there are no changes, then, set cd_size to md_size cd_size = inserts_elements_map.size > 0 ? 0 : total_count @client.put_value(:cd_size, cd_size) # now, find the exact changes inserts,deletes = Store.get_inserts_deletes(inserts_elements_map,deletes_elements_map) @client.put_data(:page,inserts) @client.put_data(:delete_page,deletes,true) @client.put_value(:total_count_page,total_count) @client.update_elements(:cd,inserts_elements_map,deletes_elements_map) [total_count,inserts,deletes] end |
#compute_page_bruteforce ⇒ Object
Computes diffs between master doc and client doc, trims it to page size, stores page, and returns page as hash
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# File 'lib/rhoconnect/handler/query/runner.rb', line 200 def compute_page_bruteforce inserts_elements_map,deletes_elements_map,total_count = @source.lock(:md) do |s| inserts_elements_map,deletes_elements_map = @client.get_diff_data_bruteforce(:cd,s.docname(:md),@p_size) total_count = s.get_value(:md_size).to_i [inserts_elements_map,deletes_elements_map,total_count] end # until sync is not done - set cd_size to 0 # once there are no changes, then, set cd_size to md_size cd_size = inserts_elements_map.size > 0 ? 0 : total_count @client.put_value(:cd_size, cd_size) # now, find the exact changes inserts,deletes = Store.get_inserts_deletes(inserts_elements_map,deletes_elements_map) @client.put_data(:page,inserts) @client.put_data(:delete_page,deletes,true) @client.put_value(:total_count_page,total_count) @client.update_elements(:cd,inserts_elements_map,deletes_elements_map) [total_count,inserts,deletes] end |
#format_result(token, progress_count, total_count, res) ⇒ Object
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# File 'lib/rhoconnect/handler/query/runner.rb', line 70 def format_result(token,progress_count,total_count,res) count = 0 count += res['insert'].length if res['insert'] count += res['delete'].length if res['delete'] [ {'version'=>Rhoconnect::SYNC_VERSION}, {'token'=>(token ? token : '')}, {'count'=>count}, {'progress_count'=>progress_count}, {'total_count'=>total_count}, res ] end |
#resend_page(token = nil) ⇒ Object
Resend token for a client, also sends exceptions
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# File 'lib/rhoconnect/handler/query/runner.rb', line 32 def resend_page(token=nil) token,progress_count,total_count,res = '',0,0,{} schema_page = @client.get_value(:schema_page) if schema_page res = {'schema-changed' => 'true'} else res = build_page do |r| r['insert'] = @client.get_data(:page) r['delete'] = @client.get_data(:delete_page) r['links'] = @client.get_data(:create_links_page) r['metadata'] = @client.get_value(:metadata_page) progress_count = 0 total_count = @client.get_value(:total_count_page).to_i end end token = @client.get_value(:page_token) [token,progress_count,total_count,res] end |
#run ⇒ Object
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# File 'lib/rhoconnect/handler/query/runner.rb', line 19 def run res = [] token = params[:token] if not ack_token(token) res = resend_page(token) else query_result = @engine.do_sync res = send_new_page end format_result(res[0],res[1],res[2],res[3]) end |
#schema_changed? ⇒ Boolean
Checks if schema changed
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# File 'lib/rhoconnect/handler/query/runner.rb', line 143 def schema_changed? if engine.model.respond_to?(:schema) schema_sha1 = @source.get_value(:schema_sha1) if @client.get_value(:schema_sha1).nil? @client.put_value(:schema_sha1,schema_sha1) return false elsif @client.get_value(:schema_sha1) == schema_sha1 return false end @client.put_value(:schema_sha1,schema_sha1) @client.put_value(:schema_page,schema_sha1) return true else return false end end |
#send_new_page ⇒ Object
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# File 'lib/rhoconnect/handler/query/runner.rb', line 90 def send_new_page token,progress_count,total_count,res = '',0,0,{} if schema_changed? _expire_bulk_data token = @client.compute_token(:page_token) res = {'schema-changed' => 'true'} else compute_errors_page res = build_page do |r| total_count,r['insert'],r['delete'] = compute_page r['links'] = compute_links_page r['metadata'] = end if res['insert'] or res['delete'] or res['links'] token = @client.compute_token(:page_token) else _delete_errors_page end end # TODO: progress count can not be computed properly # without comparing what has actually changes # so we need to obsolete it in the future versions progress_count = 0 [token,progress_count,total_count,res] end |
#send_new_page_bruteforce ⇒ Object
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# File 'lib/rhoconnect/handler/query/runner.rb', line 116 def send_new_page_bruteforce token,progress_count,total_count,res = '',0,0,{} if schema_changed? _expire_bulk_data token = @client.compute_token(:page_token) res = {'schema-changed' => 'true'} else compute_errors_page res = build_page do |r| total_count,r['insert'],r['delete'] = compute_page_bruteforce r['links'] = compute_links_page r['metadata'] = end if res['insert'] or res['delete'] or res['links'] token = @client.compute_token(:page_token) else _delete_errors_page end end # TODO: progress count can not be computed properly # without comparing what has actually changes # so we need to obsolete it in the future versions progress_count = 0 [token,progress_count,total_count,res] end |