add unix socket for postgres

lib/setup/postgres.rb

@@ -0,0 +1,83 @@
+
+module Setup
+  require_relative '../templates'
+  require_relative "../user"
+  require_relative "../execute"
+  # dat execute postgres
+  # example.rcp
+  
+  module PostgreSQL
+    extend Templates
+ 
+    def self.write_as(user, path, content)
+      puts "wriiting by #{user} to #{path}"
+      # If executed as root we can just use File.write
+      # File.write(postgresql_conf_path, postgresql_conf_content)
+      IO.popen(["sudo", "-u", user.to_s, "tee", path], "w") do |io|
+        io.write(content)
+      end
+    end
+
+
+    # attr_accessor :te 
+
+    def self.init_db(context)
+      puts "Mode, isForced #{context.forced}"
+      if Dir.exist?(context.data_dir)
+        if context.forced
+          puts("sudo rm -rf #{context.data_dir}")
+        else
+          raise "PostgreSQL data already exists"
+        end
+      end
+      system("sudo mkdir -p #{context.data_dir}")
+      system("sudo chown #{context.user_name}:services #{context.data_dir}")
+      system("sudo -u postgres #{File.join(context.bin_dir, "/bin/initdb")} -D #{context.data_dir} --username=postgres")
+    end
+
+    def self.setup_systemd(context)
+      puts "DataDir: #{context.data_dir}"
+      pg_hba = render("pg_hba.conf")
+      pg_hba_path = "#{File.join(context.data_dir, "pg_hba.conf")}"
+      write_as(context.user_name, pg_hba_path, pg_hba)
+
+      ## TODO: move this to user module
+      #uid = Etc.getpwnam(context.user_name.to_s).uid
+      #socket_path = "/run/user/#{uid}"
+      socket_path = "/run/user/#{context.user_name}"
+      #socket_path = "/tmp"
+
+      system("sudo mkdir -p #{socket_path}")
+      system("sudo chown #{context.user_name}:services #{socket_path}")
+      system("sudo chmod 711 #{socket_path}")
+
+      postgresql_conf = render("postgresql.conf", unix_socket: socket_path)
+
+      postgresql_conf_path = "#{File.join(context.data_dir, "postgresql.conf")}"
+      write_as(context.user_name, postgresql_conf_path, postgresql_conf)
+
+      postgres_service = render(
+        "postgres.service", 
+        postgres_bin: File.join(context.bin_dir, "/bin/postgres"), 
+        version: context.version, 
+        database_dir: context.data_dir
+      )
+      postgres_service_path = "/etc/systemd/system/postgres.service" 
+      write_as("root", postgres_service_path, postgres_service)
+      system("sudo systemctl daemon-reexec")
+      system("sudo systemctl daemon-reload")
+      system("sudo systemctl enable postgres")
+      system("sudo systemctl start postgres")
+      
+      # debug service
+      # sudo systemctl daemon-reexec && sudo systemctl daemon-reload && sudo systemctl restart postgresql.service
+    end
+
+    def self.install(context)
+      user_context = Execute::UserInstallContext.new(context.user_name, :service)
+      User.install(user_context)
+      init_db(context)
+      setup_systemd(context)
+    end
+  end
+end