Configure database for logical replication

[chef.git] / cookbooks / mysql / libraries / mysql.rb

diff --git a/cookbooks/mysql/libraries/mysql.rb b/cookbooks/mysql/libraries/mysql.rb
index 2b2bca67d35767b71349058e547cf9799b1bf44a..a40161be0bbfe52a6b572921c59106f41b4f0e98 100644 (file)
--- a/cookbooks/mysql/libraries/mysql.rb
+++ b/cookbooks/mysql/libraries/mysql.rb
@@ -1,9 +1,9 @@
-require "chef/mixin/command"
+require "chef/mixin/shell_out"
 require "rexml/document"
 
-class Chef
-  class MySQL
-    include Chef::Mixin::Command
+module OpenStreetMap
+  module MySQL
+    include Chef::Mixin::ShellOut
 
     USER_PRIVILEGES = [
       :select, :insert, :update, :delete, :create, :drop, :reload,
@@ -11,56 +11,54 @@ class Chef
       :show_db, :super, :create_tmp_table, :lock_tables, :execute,
       :repl_slave, :repl_client, :create_view, :show_view, :create_routine,
       :alter_routine, :create_user, :event, :trigger, :create_tablespace
-    ]
+    ].freeze
 
     DATABASE_PRIVILEGES = [
       :select, :insert, :update, :delete, :create, :drop, :grant,
       :references, :index, :alter, :create_tmp_table, :lock_tables,
       :create_view, :show_view, :create_routine, :alter_routine,
       :execute, :event, :trigger
-    ]
+    ].freeze
 
-    def execute(options)
+    def mysql_execute(options)
       # Create argument array
       args = []
 
       # Work out how to authenticate
       if options[:user]
-        args.push("--username=#{options[:user]}")
-        args.push("--password=#{options[:password]}") if options[:password]
+        args.push("--username")
+        args.push(options[:user])
+
+        if options[:password]
+          args.push("--password")
+          args.push(options[:password])
+        end
       else
         args.push("--defaults-file=/etc/mysql/debian.cnf")
       end
 
-      # Build the other arguments
-      args.push("--execute=\"#{options[:command]}\"") if options[:command]
-
-      # Get the database to use
-      database = options[:database] || "mysql"
+      # Set output format
+      args.push("--xml") if options[:xml]
 
-      # Build the command to run
-      command = "/usr/bin/mysql #{args.join(' ')} #{database}"
+      # Add any SQL command to execute
+      if options[:command]
+        args.push("--execute")
+        args.push(options[:command])
+      end
 
-      # Escape backticks in the command
-      command.gsub!(/`/, "\\\\`")
+      # Add the database name
+      args.push(options[:database] || "mysql")
 
       # Run the command
-      run_command(:command => command, :user => "root", :group => "root")
+      shell_out!("/usr/bin/mysql", *args, :user => "root", :group => "root")
     end
 
     def query(sql, options = {})
-      # Get the database to use
-      database = options[:database] || "mysql"
-
-      # Construct the command string
-      command = "/usr/bin/mysql --defaults-file=/etc/mysql/debian.cnf --xml --execute='#{sql}' #{database}"
-
       # Run the query
-      status, stdout, stderr = output_of_command(command, :user => "root", :group => "root")
-      handle_command_failures(status, "STDOUT: #{stdout}\nSTDERR: #{stderr}", :output_on_failure => true)
+      result = mysql_execute(options.merge(:command => sql, :xml => true))
 
       # Parse the output
-      document = REXML::Document.new(stdout)
+      document = REXML::Document.new(result.stdout)
 
       # Create
       records = []
@@ -86,8 +84,10 @@ class Chef
       records
     end
 
-    def users
-      @users ||= query("SELECT * FROM user").each_with_object({}) do |user, users|
+    def mysql_users
+      privilege_columns = USER_PRIVILEGES.collect { |privilege| "#{privilege}_priv" }.join(", ")
+
+      @mysql_users ||= query("SELECT user, host, #{privilege_columns} FROM user").each_with_object({}) do |user, users|
         name = "'#{user[:user]}'@'#{user[:host]}'"
 
         users[name] = USER_PRIVILEGES.each_with_object({}) do |privilege, privileges|
@@ -96,30 +96,32 @@ class Chef
       end
     end
 
-    def databases
-      @databases ||= query("SHOW databases").each_with_object({}) do |database, databases|
+    def mysql_databases
+      @mysql_databases ||= query("SHOW databases").each_with_object({}) do |database, databases|
         databases[database[:database]] = {
           :permissions => {}
         }
       end
 
       query("SELECT * FROM db").each do |record|
-        if database = @databases[record[:db]]
-          user = "'#{record[:user]}'@'#{record[:host]}'"
+        database = @mysql_databases[record[:db]]
+
+        next unless database
+
+        user = "'#{record[:user]}'@'#{record[:host]}'"
 
-          database[:permissions][user] = DATABASE_PRIVILEGES.each_with_object([]) do |privilege, privileges|
-            privileges << privilege if record["#{privilege}_priv".to_sym] == "Y"
-          end
+        database[:permissions][user] = DATABASE_PRIVILEGES.each_with_object([]) do |privilege, privileges|
+          privileges << privilege if record["#{privilege}_priv".to_sym] == "Y"
         end
       end
 
-      @databases
+      @mysql_databases
     end
 
-    def canonicalise_user(user)
+    def mysql_canonicalise_user(user)
       local, host = user.split("@")
 
-      host = "%" unless host
+      host ||= "%"
 
       local = "'#{local}'" unless local =~ /^'.*'$/
       host = "'#{host}'" unless host =~ /^'.*'$/
@@ -127,7 +129,7 @@ class Chef
       "#{local}@#{host}"
     end
 
-    def privilege_name(privilege)
+    def mysql_privilege_name(privilege)
       case privilege
       when :grant
         "GRANT OPTION"