Class: Fluent::Plugin::MysqlReplicatorMultiInput
- Inherits:
-
Input
- Object
- Input
- Fluent::Plugin::MysqlReplicatorMultiInput
- Defined in:
- lib/fluent/plugin/in_mysql_replicator_multi.rb
Instance Method Summary collapse
- #add_hash_table_buffer(setting_name, id, hash) ⇒ Object
- #collect_gap_ids(config, current_id, previous_id) ⇒ Object
- #configure(conf) ⇒ Object
- #detect_delete(config, current_id, previous_id) ⇒ Object
- #detect_insert_update(config, row) ⇒ Object
- #emit_record(tag, record) ⇒ Object
- #flush_hash_table ⇒ Object
- #format_tag(tag, param) ⇒ Object
- #get_manager_connection ⇒ Object
- #get_origin_connection(config) ⇒ Object
- #get_settings ⇒ Object
- #get_stored_hash(setting_name, id) ⇒ Object
- #hash_table_flusher ⇒ Object
-
#initialize ⇒ MysqlReplicatorMultiInput
constructor
A new instance of MysqlReplicatorMultiInput.
- #poll(config) ⇒ Object
- #shutdown ⇒ Object
- #start ⇒ Object
- #update_hashtable(opts) ⇒ Object
Constructor Details
#initialize ⇒ MysqlReplicatorMultiInput
Returns a new instance of MysqlReplicatorMultiInput.
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 7 def initialize require 'mysql2' require 'digest/sha1' super end |
Instance Method Details
#add_hash_table_buffer(setting_name, id, hash) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 210 def add_hash_table_buffer(setting_name, id, hash) @hash_table_bulk_insert << "('#{setting_name}','#{id}','#{hash}')" flush_hash_table if @hash_table_bulk_insert.size >= @bulk_insert_count end |
#collect_gap_ids(config, current_id, previous_id) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 164 def collect_gap_ids(config, current_id, previous_id) setting_name = config['name'] if (current_id - previous_id) > 1 && config['enable_loose_delete'] == 0 query = "SELECT SQL_NO_CACHE setting_query_pk FROM hash_tables WHERE setting_name = '#{setting_name}' AND setting_query_pk > #{previous_id.to_i} AND setting_query_pk < #{current_id.to_i}" elsif (current_id - previous_id) > 1 && config['enable_loose_delete'] == 1 return [*previous_id...current_id] - [current_id,previous_id] elsif previous_id > current_id query = "SELECT SQL_NO_CACHE setting_query_pk FROM hash_tables WHERE setting_name = '#{setting_name}' AND setting_query_pk > #{previous_id.to_i}" elsif previous_id == current_id query = "SELECT SQL_NO_CACHE setting_query_pk FROM hash_tables WHERE setting_name = '#{setting_name}' AND (setting_query_pk > #{current_id.to_i} OR setting_query_pk < #{current_id.to_i})" end ids = Array.new unless query.nil? @manager_db.query(query).each do |row| ids << row['setting_query_pk'] end end return ids end |
#configure(conf) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 23 def configure(conf) super if @tag.nil? raise Fluent::ConfigError, "mysql_replicator_multi: missing 'tag' parameter. Please add following line into config like 'tag replicator.${name}.${event}.${primary_key}'" end end |
#detect_delete(config, current_id, previous_id) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 151 def detect_delete(config, current_id, previous_id) return if config['enable_delete'] != 1 || previous_id.nil? deleted_ids = collect_gap_ids(config, current_id, previous_id) unless deleted_ids.empty? event = :delete deleted_ids.each do |id| tag = format_tag(@tag, {:name => config['name'], :event => event, :primary_key => config['primary_key']}) emit_record(tag, {config['primary_key'] => id}) end update_hashtable({:event => event, :ids => deleted_ids, :setting_name => config['name']}) end end |
#detect_insert_update(config, row) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 126 def detect_insert_update(config, row) primary_key = config['primary_key'] current_id = row[primary_key] stored_hash = config['enable_loose_insert'] == 1 ? "" : get_stored_hash(config['name'], current_id) current_hash = Digest::SHA1.hexdigest(row.flatten.join) event = nil if stored_hash.empty? event = :insert elsif stored_hash != current_hash event = :update end unless event.nil? tag = format_tag(@tag, {:name => config['name'], :event => event, :primary_key => config['primary_key']}) emit_record(tag, row) update_hashtable({:event => event, :id => current_id, :setting_name => config['name'], :hash => current_hash}) end end |
#emit_record(tag, record) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 245 def emit_record(tag, record) router.emit(tag, Fluent::Engine.now, record) end |
#flush_hash_table ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 235 def flush_hash_table return if @hash_table_bulk_insert.empty? query = "INSERT INTO hash_tables (setting_name,setting_query_pk,setting_query_hash) VALUES #{@hash_table_bulk_insert.join(',')} ON DUPLICATE KEY UPDATE setting_query_hash = VALUES(setting_query_hash)" @manager_db.query(query) @hash_table_bulk_insert.clear @hash_table_bulk_insert_last_time = Time.now end |
#format_tag(tag, param) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 202 def format_tag(tag, param) pattern = {'${name}' => param[:name], '${event}' => param[:event].to_s, '${primary_key}' => param[:primary_key]} tag.gsub(/(\${[a-z_]+})/) do log.warn "mysql_replicator_multi: unknown placeholder found. :tag=>#{tag} :placeholder=>#{$1}" unless pattern.include?($1) pattern[$1] end end |
#get_manager_connection ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 249 def get_manager_connection begin return Mysql2::Client.new( :host => @manager_host, :port => @manager_port, :username => @manager_username, :password => @manager_password, :database => @manager_database, :encoding => 'utf8', :reconnect => true, :stream => false, :cache_rows => false ) rescue Mysql2::Error => e raise "mysql_replicator_multi: #{e}" end end |
#get_origin_connection(config) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 267 def get_origin_connection(config) begin return Mysql2::Client.new( :host => config['host'], :port => config['port'], :username => config['username'], :password => config['password'], :database => config['database'], :encoding => 'utf8', :reconnect => true, :stream => true, :cache_rows => false ) rescue Mysql2::Error => e raise "mysql_replicator_multi: #{e}" end end |
#get_settings ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 58 def get_settings manager_db = get_manager_connection settings = [] query = "SELECT * FROM settings WHERE is_active = 1;" manager_db.query(query).each do |row| settings << row end return settings end |
#get_stored_hash(setting_name, id) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 145 def get_stored_hash(setting_name, id) query = "SELECT SQL_NO_CACHE setting_query_hash FROM hash_tables WHERE setting_query_pk = #{id.to_i} AND setting_name = '#{setting_name}'" row = @manager_db.query(query).first return row.nil? ? "" : row['setting_query_hash'] end |
#hash_table_flusher ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 215 def hash_table_flusher begin loop do if @hash_table_bulk_insert.empty? || @bulk_insert_timeout > (Time.now - @hash_table_bulk_insert_last_time) sleep @bulk_insert_timeout next end @mutex.synchronize { flush_hash_table } end rescue StandardError => e @mutex.synchronize { log.error "mysql_replicator_multi: failed to flush buffered query. :config=>#{masked_config}" log.error "error: #{e.}" log.error e.backtrace.join("\n") } end end |
#poll(config) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 68 def poll(config) begin masked_config = Hash[config.map {|k,v| (k == 'password') ? [k, v.to_s.gsub(/./, '*')] : [k,v]}] @mutex.synchronize { log.info "mysql_replicator_multi: polling start. :config=>#{masked_config}" } primary_key = config['primary_key'] previous_id = current_id = nil loop do rows_count = 0 start_time = Time.now unless config['prepared_query'].nil? nest_db = get_origin_connection(config) config['prepared_query'].strip.split(/;/).each do |query| nest_db.query(query) end end db = get_origin_connection(config) db.query(config['query']).each do |row| row.each {|k, v| row[k] = v.to_s if v.is_a?(Time) || v.is_a?(Date) || v.is_a?(BigDecimal)} row.select {|k, v| v.to_s.strip.match(/^SELECT[^\$]+\$\{[^\}]+\}/i) }.each do |k, v| row[k] = [] unless row[k].is_a?(Array) nest_db.query(v.gsub(/\$\{([^\}]+)\}/) {|matched| row[$1].to_s}).each do |nest_row| nest_row.each {|k, v| nest_row[k] = v.to_s if v.is_a?(Time) || v.is_a?(Date) || v.is_a?(BigDecimal)} row[k] << nest_row end end current_id = row[primary_key] @mutex.synchronize { if row[primary_key].nil? log.error "mysql_replicator_multi: missing primary_key. :setting_name=>#{config['name']} :primary_key=>#{primary_key}" break end detect_insert_update(config, row) detect_delete(config, current_id, previous_id) } previous_id = current_id rows_count += 1 end db.close unless config['prepared_query'].nil? nest_db.close end elapsed_time = sprintf("%0.02f", Time.now - start_time) @mutex.synchronize { log.info "mysql_replicator_multi: execution finished. :setting_name=>#{config['name']} :rows_count=>#{rows_count} :elapsed_time=>#{elapsed_time} sec" } sleep config['interval'] end rescue StandardError => e @mutex.synchronize { log.error "mysql_replicator_multi: failed to execute query. :config=>#{masked_config}" log.error "error: #{e.}" log.error e.backtrace.join("\n") } end end |
#shutdown ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 54 def shutdown super end |
#start ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 30 def start super begin @threads = [] @mutex = Mutex.new @manager_db = get_manager_connection @manager_db.query("SET SESSION wait_timeout=1800;") @threads << thread_create(:in_mysql_replicator_flusher) { @hash_table_bulk_insert = [] @hash_table_bulk_insert_last_time = Time.now hash_table_flusher } get_settings.each_with_index do |config, idx| @threads << thread_create(:"in_mysql_replicator_pollers_#{idx}") { poll(config) } end log.error "mysql_replicator_multi: stop working due to empty configuration" if @threads.empty? rescue StandardError => e log.error "error: #{e.}" log.error e.backtrace.join("\n") end end |
#update_hashtable(opts) ⇒ Object
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# File 'lib/fluent/plugin/in_mysql_replicator_multi.rb', line 190 def update_hashtable(opts) case opts[:event] when :insert add_hash_table_buffer(opts[:setting_name], opts[:id], opts[:hash]) when :update query = "UPDATE hash_tables SET setting_query_hash = '#{opts[:hash]}' WHERE setting_name = '#{opts[:setting_name]}' AND setting_query_pk = '#{opts[:id]}'" when :delete query = "DELETE FROM hash_tables WHERE setting_name = '#{opts[:setting_name]}' AND setting_query_pk IN(#{opts[:ids].join(',')})" end @manager_db.query(query) unless query.nil? end |