Add postgresql_sequence for managing sequences

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

diff --git a/cookbooks/postgresql/libraries/postgresql.rb b/cookbooks/postgresql/libraries/postgresql.rb
index 05bf158f2500413c1146c1a315c9f912d3855a26..9a53331dd017b6a8046c2de3200357b79d39e8c9 100644 (file)
--- a/cookbooks/postgresql/libraries/postgresql.rb
+++ b/cookbooks/postgresql/libraries/postgresql.rb
@@ -1,52 +1,65 @@
-require 'chef/mixin/command'
+require "chef/mixin/shell_out"
 
-class Chef
+module OpenStreetMap
   class PostgreSQL
-    include Chef::Mixin::Command
+    include Chef::Mixin::ShellOut
 
     TABLE_PRIVILEGES = [
       :select, :insert, :update, :delete, :truncate, :references, :trigger
-    ]
+    ].freeze
+
+    SEQUENCE_PRIVILEGES = [
+      :usage, :select, :update
+    ].freeze
 
     def initialize(cluster)
       @cluster = cluster
     end
 
+    def version
+      @cluster.split("/").first.to_f
+    end
+
     def execute(options)
       # Create argument array
       args = []
 
-      # Build the arguments
-      args.push("--command=\"#{options[:command].gsub('"', '\\"')}\"") if options[:command]
-      args.push("--file=#{options[:file]}") if options[:file]
+      # Add the cluster
+      args.push("--cluster")
+      args.push(@cluster)
 
-      # Get the database to use
-      database = options[:database] || "template1"
+      # Set output format
+      args.push("--no-align") unless options.fetch(:align, true)
 
-      # Build the command to run
-      command = "/usr/bin/psql --cluster #{@cluster} #{args.join(' ')} #{database}"
+      # Add any SQL command to execute
+      if options[:command]
+        args.push("--command")
+        args.push(options[:command])
+      end
+
+      # Add any file to execute SQL commands from
+      if options[:file]
+        args.push("--file")
+        args.push(options[:file])
+      end
+
+      # Add the database name
+      args.push(options[:database] || "template1")
 
       # Get the user and group to run as
       user = options[:user] || "postgres"
       group = options[:group] || "postgres"
 
       # Run the command
-      run_command(:command => command, :user => user, :group => group)
+      shell_out!("/usr/bin/psql", *args, :user => user, :group => group)
     end
 
     def query(sql, options = {})
-      # Get the database to use
-      database = options[:database] || "template1"
-
-      # Construct the command string
-      command = "/usr/bin/psql --cluster #{@cluster} --no-align --command='#{sql}' #{database}"
-
       # Run the query
-      status, stdout, stderr = output_of_command(command, :user => "postgres", :group => "postgres")
-      handle_command_failures(status, "STDOUT: #{stdout}\nSTDERR: #{stderr}", :output_on_failure => true)
+      result = execute(options.merge(:command => sql, :align => false))
 
       # Split the output into lines
-      lines = stdout.split("\n")
+      lines = result.stdout.split("\n")
 
       # Remove the "(N rows)" line from the end
       lines.pop
@@ -93,9 +106,17 @@ class Chef
       end
     end
 
+    def tablespaces
+      @tablespaces ||= query("SELECT spcname, usename FROM pg_tablespace AS t INNER JOIN pg_user AS u ON t.spcowner = u.usesysid").each_with_object({}) do |tablespace, tablespaces|
+        tablespaces[tablespace[:spcname]] = {
+          :owner => tablespace[:usename]
+        }
+      end
+    end
+
     def tables(database)
       @tables ||= {}
-      @tables[database] ||= query("SELECT n.nspname, c.relname, u.usename, c.relacl FROM pg_class AS c INNER JOIN pg_user AS u ON c.relowner = u.usesysid INNER JOIN pg_namespace AS n ON c.relnamespace = n.oid", :database => database).each_with_object({}) do |table, tables|
+      @tables[database] ||= query("SELECT n.nspname, c.relname, u.usename, c.relacl FROM pg_class AS c INNER JOIN pg_user AS u ON c.relowner = u.usesysid INNER JOIN pg_namespace AS n ON c.relnamespace = n.oid WHERE c.relkind = 'r'", :database => database).each_with_object({}) do |table, tables|
         name = "#{table[:nspname]}.#{table[:relname]}"
 
         tables[name] = {
@@ -105,11 +126,23 @@ class Chef
       end
     end
 
-  private
+    def sequences(database)
+      @sequences ||= {}
+      @sequences[database] ||= query("SELECT n.nspname, c.relname, u.usename, c.relacl FROM pg_class AS c INNER JOIN pg_user AS u ON c.relowner = u.usesysid INNER JOIN pg_namespace AS n ON c.relnamespace = n.oid WHERE c.relkind = 'S'", :database => database).each_with_object({}) do |sequence, sequences|
+        name = "#{sequence[:nspname]}.#{sequence[:relname]}"
+
+        sequences[name] = {
+          :owner => sequence[:usename],
+          :permissions => parse_acl(sequence[:relacl] || "{}")
+        }
+      end
+    end
+
+    private
 
     def parse_acl(acl)
       acl.sub(/^\{(.*)\}$/, "\\1").split(",").each_with_object({}) do |entry, permissions|
-        entry = entry.sub(/^"(.*)"$/) { Regexp.last_match[1].gsub(/\\"/, '"') }.sub(/\/.*$/, "")
+        entry = entry.sub(/^"(.*)"$/) { Regexp.last_match[1].gsub(/\\"/, '"') }.sub(%r{/.*$}, "")
         user, privileges = entry.split("=")
 
         user = user.sub(/^"(.*)"$/, "\\1")
@@ -118,7 +151,7 @@ class Chef
         permissions[user] = {
           "a" => :insert, "r" => :select, "w" => :update, "d" => :delete,
           "D" => :truncate, "x" => :references, "t" => :trigger
-        }.values_at(*(privileges.chars)).compact
+        }.values_at(*privileges.chars).compact
       end
     end
   end