Merge pull request #100 from mattprintz/master

Debian APT module

salt/modules/apt.py

@@ -0,0 +1,134 @@
+'''
+Support for apt
+'''
+
+import subprocess
+
+def __virtual__():
+    '''
+    Confine this module is on a Debian based system
+    '''
+    
+    return 'pkg' if __grains__['os'] == 'Debian' else False
+
+def update():
+    '''
+    Updates the apt database to latest packages based upon repositories
+    
+    Returns True/False based upon successful completion of update
+    '''
+    cmd = 'apt-get update'
+    result = subprocess.call(cmd, shell=True)
+    
+    return result == 0
+    
+
+def install(pkg, update_repos=False):
+    '''
+    Install the passed package
+    
+    Return a dict containing the new package names and versions:
+    {'<package>': {'old': '<old-version>',
+                   'new': '<new-version>']}
+    '''
+    if(update_repos):
+        update()
+    
+    ret_pkgs = {}
+    old_pkgs = list_pkgs()
+    cmd = 'apt-get -y install ' + pkg
+    subprocess.call(cmd, shell=True)
+    new_pkgs = list_pkgs()
+    
+    for pkg in new_pkgs:
+        if old_pkgs.has_key(pkg):
+            if old_pkgs[pkg] == new_pkgs[pkg]:
+                continue
+            else:
+                ret_pkgs[pkg] = {'old': old_pkgs[pkg],
+                             'new': new_pkgs[pkg]}
+        else:
+            ret_pkgs[pkg] = {'old': '',
+                         'new': new_pkgs[pkg]}
+    
+    return ret_pkgs
+
+def remove(pkg):
+    '''
+    Remove a single package via apt-get remove
+    
+    Return a list containing the names of the removed packages:
+    
+    CLI Example:
+    salt '*' pkg.remove <package name>
+    '''
+    ret_pkgs = []
+    old_pkgs = list_pkgs()
+    
+    cmd = 'apt-get -y remove ' + pkg
+    subprocess.call(cmd, shell=True)
+    new = list_pkgs()
+    
+    for pkg in old_pkgs:
+        if not new_pkgs.has_key(pkg):
+            ret_pkgs.append(pkg)
+    
+    return ret_pkgs
+
+def dist_upgrade(update_repos=False):
+    '''
+    Upgrades all packages via apt-get dist-upgrade
+    
+    Returns a list of dicts containing the package names, and the new and old versions:
+    [
+        {'<package>':  {'old': '<old-version>',
+                      'new': '<new-version>']
+        }',
+        ...
+    ]
+    '''
+    
+    if(update_repos):
+        update()
+    
+    ret_pkgs = {}
+    old_pkgs = list_pkgs()
+    cmd = 'apt-get -y dist-upgrade'
+    subprocess.call(cmd, shell=True)
+    new_pkgs = list_pkgs()
+    
+    for pkg in new_pkgs:
+        if old_pkgs.has_key(pkg):
+            if old_pkgs[pkg] == new_pkgs[pkg]:
+                continue
+            else:
+                ret_pkgs[pkg] = {'old': old_pkgs[pkg],
+                             'new': new_pkgs[pkg]}
+        else:
+            ret_pkgs[pkg] = {'old': '',
+                         'new': new_pkgs[pkg]}
+    
+    return ret_pkgs
+
+
+def list_pkgs():
+    '''
+    List the packages currently installed in a dict:
+    {'<package_name>': '<version>'}
+
+    CLI Example:
+    salt '*' pkg.list_pkgs
+    '''
+    ret = {}
+    cmd = 'dpkg --list'
+    
+    out = subprocess.Popen(cmd,
+            shell=True,
+            stdout=subprocess.PIPE).communicate()[0].split('\n')
+    
+    for line in out:
+        cols = line.split()
+        if len(cols) and cols[0].count('ii'):
+            ret[cols[1]] = cols[2]
+    
+    return ret