Add log message when checking share option

slapos/recipe/cmmi/README.txt

@@ -1086,6 +1086,8 @@ Use option ``share`` to install a share pacakge.
     Uninstalling package.
     Uninstalling package-2.
     Installing package.
+    package: Checking whether package is installed at share path: /usr/local/bin
+    package: could not find promise "/usr/local/bin/mypackage.exe"
     package: [ENV] TMP = /sample_buildout/parts/package/tmp
     package: Extracting package to /sample_buildout/parts/package__compile__
     configure --prefix=/sample_buildout/parts/package
@@ -1110,6 +1112,7 @@ Do nothing if one package has been installed.
     >>> print system(buildout)
     Uninstalling package.
     Installing package.
+    package: Checking whether package is installed at share path: /usr/local/bin
     package: This shared package has been installed by other package
 
 For even more specific needs you can write your own recipe that uses

slapos/recipe/cmmi/__init__.py

@@ -184,11 +184,11 @@ class Recipe(object):
         
     def check_promises(self, log=None):
         result = True
+        log = logging.getLogger(self.name)
         for path in self.options['promises'].splitlines():
             if not os.path.exists(path):
                 result = False
-                if log is not None: 
-                    log.warning('could not find promise "%s"' % path)
+                log.warning('could not find promise "%s"' % path)
         return result
         
     def call_script(self, script):
@@ -234,9 +234,11 @@ class Recipe(object):
         parts = []
 
         # In share mode, do nothing if package has been installed.
-        if (not self.options['share'] == '') and self.check_promises():
-            log.info('This shared package has been installed by other package')
-            return parts
+        if (not self.options['share'] == ''):
+            log.info('Checking whether package is installed at share path: %s' % self.options['share'])
+            if self.check_promises(log):
+                log.info('This shared package has been installed by other package')
+                return parts
             
         make_cmd = self.options.get('make-binary', 'make').strip()
         make_options = ' '.join(self.options.get('make-options', '').split())