lib/cdist => cdist (pypi)

Signed-off-by: Nico Schottelius <nico@brief.schottelius.org>

cdist/exec/local.py

@@ -0,0 +1,124 @@
+# -*- coding: utf-8 -*-
+#
+# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
+# 2011 Nico Schottelius (nico-cdist at schottelius.org)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+# FIXME: common base class with Remote?
+
+import io
+import os
+import sys
+import subprocess
+import shutil
+import logging
+
+import cdist
+from cdist import core
+
+class Local(object):
+    """Execute commands locally.
+
+    All interaction with the local side should be done through this class.
+    Directly accessing the local side from python code is a bug.
+
+    """
+    def __init__(self, target_host, local_base_path, out_path):
+        self.target_host = target_host
+        self.base_path = local_base_path
+
+        # Local input
+        self.cache_path = os.path.join(self.base_path, "cache")
+        self.conf_path = os.path.join(self.base_path, "conf")
+        self.global_explorer_path = os.path.join(self.conf_path, "explorer")
+        self.manifest_path = os.path.join(self.conf_path, "manifest")
+        self.type_path = os.path.join(self.conf_path, "type")
+        # FIXME: should not be needed anywhere
+        self.lib_path = os.path.join(self.base_path, "lib")
+
+        # Local output
+        self.out_path = out_path
+        self.bin_path = os.path.join(self.out_path, "bin")
+        self.global_explorer_out_path = os.path.join(self.out_path, "explorer")
+        self.object_path = os.path.join(self.out_path, "object")
+
+        self.log = logging.getLogger(self.target_host)
+
+        # Setup file permissions using umask
+        os.umask(0o077)
+
+    def create_directories(self):
+        self.mkdir(self.out_path)
+        self.mkdir(self.global_explorer_out_path)
+        self.mkdir(self.bin_path)
+
+    def rmdir(self, path):
+        """Remove directory on the local side."""
+        self.log.debug("Local rmdir: %s", path)
+        shutil.rmtree(path)
+
+    def mkdir(self, path):
+        """Create directory on the local side."""
+        self.log.debug("Local mkdir: %s", path)
+        os.makedirs(path, exist_ok=True)
+
+    def run(self, command, env=None, return_output=False):
+        """Run the given command with the given environment.
+        Return the output as a string.
+
+        """
+        assert isinstance(command, (list, tuple)), "list or tuple argument expected, got: %s" % command
+        self.log.debug("Local run: %s", command)
+
+        if env is None:
+            env = os.environ.copy()
+        # Export __target_host for use in __remote_{copy,exec} scripts
+        env['__target_host'] = self.target_host
+
+        try:
+            if return_output:
+                return subprocess.check_output(command, env=env).decode()
+            else:
+                subprocess.check_call(command, env=env)
+        except subprocess.CalledProcessError:
+            raise cdist.Error("Command failed: " + " ".join(command))
+        except OSError as error:
+            raise cdist.Error(" ".join(*args) + ": " + error.args[1])
+
+    def run_script(self, script, env=None, return_output=False):
+        """Run the given script with the given environment.
+        Return the output as a string.
+
+        """
+        command = ["/bin/sh", "-e"]
+        command.append(script)
+
+        return self.run(command, env, return_output)
+
+    def link_emulator(self, exec_path):
+        """Link emulator to types"""
+        src = os.path.abspath(exec_path)
+        for cdist_type in core.CdistType.list_types(self.type_path):
+            dst = os.path.join(self.bin_path, cdist_type.name)
+            self.log.debug("Linking emulator: %s to %s", src, dst)
+
+            try:
+                os.symlink(src, dst)
+            except OSError as e:
+                raise cdist.Error("Linking emulator from %s to %s failed: %s" % (src, dst, e.__str__()))