(MODULES-1287) Pass the backup credentials to 'SHOW DATABASES'

Pass the backup username and password to mysql when running SHOW DATABASES in
mysqlbackup.sh if `file_per_database` is true and `backupdatabases` is empty.

spec/acceptance/mysql_backup_spec.rb

@@ -61,4 +61,72 @@ class { 'mysql::server::backup':
       end
     end
   end
+
+  context 'with one file per database' do
+    context 'should work with no errors' do
+      it 'when configuring mysql backups' do
+        pp = <<-EOS
+          class { 'mysql::server': root_password => 'password' }
+          mysql::db { [
+            'backup1',
+            'backup2'
+          ]:
+            user     => 'backup',
+            password => 'secret',
+          }
+
+          class { 'mysql::server::backup':
+            backupuser        => 'myuser',
+            backuppassword    => 'mypassword',
+            backupdir         => '/tmp/backups',
+            backupcompress    => true,
+            file_per_database => true,
+            postscript        => [
+              'rm -rf /var/tmp/mysqlbackups',
+              'rm -f /var/tmp/mysqlbackups.done',
+              'cp -r /tmp/backups /var/tmp/mysqlbackups',
+              'touch /var/tmp/mysqlbackups.done',
+            ],
+            execpath          => '/usr/bin:/usr/sbin:/bin:/sbin:/opt/zimbra/bin',
+          }
+        EOS
+
+        apply_manifest(pp, :catch_failures => true)
+        apply_manifest(pp, :catch_failures => true)
+      end
+    end
+
+    describe 'mysqlbackup.sh' do
+      it 'should run mysqlbackup.sh with no errors without root credentials' do
+        shell("HOME=/tmp/dontreadrootcredentials /usr/local/sbin/mysqlbackup.sh") do |r|
+          expect(r.stderr).to eq("")
+        end
+      end
+
+      it 'should create one file per database' do
+        ['backup1', 'backup2'].each do |database|
+          shell("ls -l /tmp/backups/mysql_backup_#{database}_*-*.sql.bz2 | wc -l") do |r|
+            expect(r.stdout).to match(/1/)
+            expect(r.exit_code).to be_zero
+          end
+        end
+      end
+
+      context 'should create one file per database per run' do
+        it 'executes mysqlbackup.sh a second time' do
+          shell('sleep 1')
+          shell('HOME=/tmp/dontreadrootcredentials /usr/local/sbin/mysqlbackup.sh')
+        end
+
+        it 'has one file per database per run' do
+          ['backup1', 'backup2'].each do |database|
+            shell("ls -l /tmp/backups/mysql_backup_#{database}_*-*.sql.bz2 | wc -l") do |r|
+              expect(r.stdout).to match(/2/)
+              expect(r.exit_code).to be_zero
+            end
+          end
+        end
+      end
+    end
+  end
 end

templates/mysqlbackup.sh.erb

@@ -40,7 +40,7 @@ cleanup
 <% end -%>
 <% if @backupdatabases.empty? -%>
 <% if @file_per_database -%>
-mysql -s -r -N -e 'SHOW DATABASES' | while read dbname
+mysql -u${USER} -p${PASS} -s -r -N -e 'SHOW DATABASES' | while read dbname
 do
   mysqldump -u${USER} -p${PASS} --opt --flush-logs --single-transaction \
     ${EVENTS} \