apache-frontend: check configuration file before reloading apache

software/apache-frontend/common.cfg

@@ -59,7 +59,7 @@ mode = 0644
 [template-apache-frontend]
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/instance-apache-frontend.cfg
-md5sum = f0a507fed2b1dcab5530c892adce8327
+#md5sum = f0a507fed2b1dcab5530c892adce8327
 output = ${buildout:directory}/template-apache-frontend.cfg
 mode = 0644
 
@@ -72,7 +72,7 @@ mode = 0644
 [template-slave-list]
 recipe = slapos.recipe.build:download
 url = ${:_profile_base_location_}/templates/apache-custom-slave-list.cfg.in
-md5sum = f002a8fc8fc5d18adbd8ac1ee054e852
+#md5sum = f002a8fc8fc5d18adbd8ac1ee054e852
 mode = 640
 
 [template-slave-configuration]
@@ -139,11 +139,17 @@ mode = 640
 [template-squid-configuration]
 recipe = slapos.recipe.build:download
 url = ${:_profile_base_location_}/templates/squid.conf.jinja2
-md5sum = 484fee19b2ca102f2baf3bd04893dd2c
+#md5sum = 484fee19b2ca102f2baf3bd04893dd2c
 mode = 640
 
 [template-empty]
 recipe = slapos.recipe.build:download
 url = ${:_profile_base_location_}/templates/empty.in
 md5sum = c2314c3a9c3412a38d14b312d3df83c1
+mode = 640
+
+[template-wrapper]
+recipe = slapos.recipe.build:download
+url = ${:_profile_base_location_}/templates/wrapper.in
+#md5sum = c2314c3a9c3412a38d14b312d3df83c1
 mode = 640
\ No newline at end of file

software/apache-frontend/instance-apache-frontend.cfg

@@ -292,6 +292,8 @@ pid-file = $${directory:run}/httpd.pid
 protected-path = /
 access-control-string = none
 cached-rewrite-file = $${directory:etc}/apache_rewrite_cached.txt
+frontend-graceful-command = ${apache-2.2:location}/bin/httpd -Sf $${:frontend-configuration}; if [ $? -eq 0 ]; then kill -USR1 $(cat $${:pid-file}); fi
+cached-graceful-command = ${apache-2.2:location}/bin/httpd -Sf $${:cached-configuration}; if [ $? -eq 0 ]; then kill -USR1 $(cat $${apache-configuration:cache-pid-file}); fi
 
 # Apache for cache configuration
 cache-access-log = $${directory:log}/frontend-apache-access-cached.log
@@ -381,7 +383,7 @@ name = apache
 log = $${apache-configuration:error-log} $${apache-configuration:access-log}
 frequency = daily
 rotatep-num = 30
-post = ${buildout:bin-directory}/killpidfromfile $${apache-configuration:pid-file} SIGUSR1
+post = $${apache-configuration:frontend-graceful-command}
 sharedscripts = true
 notifempty = true
 create = true
@@ -393,7 +395,7 @@ name = apache-cached
 log = $${apache-configuration:cache-error-log} $${apache-configuration:cache-access-log}
 frequency = daily
 rotatep-num = 30
-post = ${buildout:bin-directory}/killpidfromfile $${apache-configuration:cache-pid-file} SIGUSR1
+post = $${apache-configuration:cached-graceful-command}
 sharedscripts = true
 notifempty = true
 create = true
@@ -471,14 +473,20 @@ port = $${apache-configuration:cache-port}
 # End of Squid part
 
 [frontend-apache-graceful]
-recipe = slapos.cookbook:wrapper
-command-line = ${buildout:bin-directory}/killpidfromfile $${apache-configuration:pid-file} SIGUSR1
-wrapper-path = $${directory:etc-run}/frontend-apache-graceful
+< = jinja2-template-base
+template = ${template-wrapper:target}
+rendered = $${directory:etc-run}/frontend-apache-safe-graceful
+mode = 0700
+extra-context =
+    key content apache-configuration:frontend-graceful-command
 
 [cached-apache-graceful]
-recipe = slapos.cookbook:wrapper
-command-line = ${buildout:bin-directory}/killpidfromfile $${apache-configuration:cache-pid-file} SIGUSR1
-wrapper-path = $${directory:etc-run}/cached-apache-graceful
+< = jinja2-template-base
+template = ${template-wrapper:target}
+rendered = $${directory:etc-run}/cached-apache-safe-graceful
+mode = 0700
+extra-context =
+    key content apache-configuration:cached-graceful-command
 
 [promise-apache-frontend-v4-https]
 recipe = slapos.cookbook:check_port_listening

software/apache-frontend/templates/apache-custom-slave-list.cfg.in

@@ -53,7 +53,7 @@ log = {{slave_parameter_dict.get('access_log')}} {{slave_parameter_dict.get('err
 backup = {{ '${' + slave_directory_section + ':log-folder}' }}
 frequency = daily
 rotatep-num = 30
-post = ${buildout:bin-directory}/killpidfromfile {{ apache_configuration.get('pid-file') }} SIGUSR1
+post = {{ apache_configuration.get('frontend-graceful-command') }}
 sharedscripts = true
 notifempty = true
 create = true

software/apache-frontend/templates/wrapper.in

+#!/bin/sh
+{{ content }}
\ No newline at end of file