Move runparts to subp. (#420)

runparts (run a directory of scripts) seems to fit well in subp
module.  The request to move it there was raised in #416.

Replace use of logexc with LOG.debug as logexc comes from util.

7 files changed, 42 insertions, 40 deletions

diff --git a/cloudinit/config/cc_scripts_per_boot.py b/cloudinit/config/cc_scripts_per_boot.py
index 588e1b03..1e3f419e 100644
--- a/cloudinit/config/cc_scripts_per_boot.py
+++ b/cloudinit/config/cc_scripts_per_boot.py
@@ -24,7 +24,7 @@ module does not accept any config keys.
 
 import os
 
-from cloudinit import util
+from cloudinit import subp
 
 from cloudinit.settings import PER_ALWAYS
 
@@ -38,7 +38,7 @@ def handle(name, _cfg, cloud, log, _args):
     # https://forums.aws.amazon.com/thread.jspa?threadID=96918
     runparts_path = os.path.join(cloud.get_cpath(), 'scripts', SCRIPT_SUBDIR)
     try:
-        util.runparts(runparts_path)
+        subp.runparts(runparts_path)
     except Exception:
         log.warning("Failed to run module %s (%s in %s)",
                     name, SCRIPT_SUBDIR, runparts_path)
diff --git a/cloudinit/config/cc_scripts_per_instance.py b/cloudinit/config/cc_scripts_per_instance.py
index 75549b52..5966fb9a 100644
--- a/cloudinit/config/cc_scripts_per_instance.py
+++ b/cloudinit/config/cc_scripts_per_instance.py
@@ -27,7 +27,7 @@ the system. As a result per-instance scripts will run again.
 
 import os
 
-from cloudinit import util
+from cloudinit import subp
 
 from cloudinit.settings import PER_INSTANCE
 
@@ -41,7 +41,7 @@ def handle(name, _cfg, cloud, log, _args):
     # https://forums.aws.amazon.com/thread.jspa?threadID=96918
     runparts_path = os.path.join(cloud.get_cpath(), 'scripts', SCRIPT_SUBDIR)
     try:
-        util.runparts(runparts_path)
+        subp.runparts(runparts_path)
     except Exception:
         log.warning("Failed to run module %s (%s in %s)",
                     name, SCRIPT_SUBDIR, runparts_path)
diff --git a/cloudinit/config/cc_scripts_per_once.py b/cloudinit/config/cc_scripts_per_once.py
index 259bdfab..bcca859e 100644
--- a/cloudinit/config/cc_scripts_per_once.py
+++ b/cloudinit/config/cc_scripts_per_once.py
@@ -25,7 +25,7 @@ be run in alphabetical order. This module does not accept any config keys.
 
 import os
 
-from cloudinit import util
+from cloudinit import subp
 
 from cloudinit.settings import PER_ONCE
 
@@ -39,7 +39,7 @@ def handle(name, _cfg, cloud, log, _args):
     # https://forums.aws.amazon.com/thread.jspa?threadID=96918
     runparts_path = os.path.join(cloud.get_cpath(), 'scripts', SCRIPT_SUBDIR)
     try:
-        util.runparts(runparts_path)
+        subp.runparts(runparts_path)
     except Exception:
         log.warning("Failed to run module %s (%s in %s)",
                     name, SCRIPT_SUBDIR, runparts_path)
diff --git a/cloudinit/config/cc_scripts_user.py b/cloudinit/config/cc_scripts_user.py
index d940dbd6..215703ef 100644
--- a/cloudinit/config/cc_scripts_user.py
+++ b/cloudinit/config/cc_scripts_user.py
@@ -27,7 +27,7 @@ This module does not accept any config keys.
 
 import os
 
-from cloudinit import util
+from cloudinit import subp
 
 from cloudinit.settings import PER_INSTANCE
 
@@ -42,7 +42,7 @@ def handle(name, _cfg, cloud, log, _args):
     # go here...
     runparts_path = os.path.join(cloud.get_ipath_cur(), SCRIPT_SUBDIR)
     try:
-        util.runparts(runparts_path)
+        subp.runparts(runparts_path)
     except Exception:
         log.warning("Failed to run module %s (%s in %s)",
                     name, SCRIPT_SUBDIR, runparts_path)
diff --git a/cloudinit/config/cc_scripts_vendor.py b/cloudinit/config/cc_scripts_vendor.py
index faac9242..e0a4bfff 100644
--- a/cloudinit/config/cc_scripts_vendor.py
+++ b/cloudinit/config/cc_scripts_vendor.py
@@ -28,6 +28,7 @@ entry under the ``vendor_data`` config key.
 
 import os
 
+from cloudinit import subp
 from cloudinit import util
 
 from cloudinit.settings import PER_INSTANCE
@@ -46,7 +47,7 @@ def handle(name, cfg, cloud, log, _args):
     prefix = util.get_cfg_by_path(cfg, ('vendor_data', 'prefix'), [])
 
     try:
-        util.runparts(runparts_path, exe_prefix=prefix)
+        subp.runparts(runparts_path, exe_prefix=prefix)
     except Exception:
         log.warning("Failed to run module %s (%s in %s)",
                     name, SCRIPT_SUBDIR, runparts_path)
diff --git a/cloudinit/subp.py b/cloudinit/subp.py
index f8400b1f..804ef3ca 100644
--- a/cloudinit/subp.py
+++ b/cloudinit/subp.py
@@ -351,4 +351,36 @@ def is_exe(fpath):
     return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
 
 
+def runparts(dirp, skip_no_exist=True, exe_prefix=None):
+    if skip_no_exist and not os.path.isdir(dirp):
+        return
+
+    failed = []
+    attempted = []
+
+    if exe_prefix is None:
+        prefix = []
+    elif isinstance(exe_prefix, str):
+        prefix = [str(exe_prefix)]
+    elif isinstance(exe_prefix, list):
+        prefix = exe_prefix
+    else:
+        raise TypeError("exe_prefix must be None, str, or list")
+
+    for exe_name in sorted(os.listdir(dirp)):
+        exe_path = os.path.join(dirp, exe_name)
+        if is_exe(exe_path):
+            attempted.append(exe_path)
+            try:
+                subp(prefix + [exe_path], capture=False)
+            except ProcessExecutionError as e:
+                LOG.debug(e)
+                failed.append(exe_name)
+
+    if failed and attempted:
+        raise RuntimeError(
+            'Runparts: %s failures (%s) in %s attempted commands' %
+            (len(failed), ",".join(failed), len(attempted)))
+
+
 # vi: ts=4 expandtab
diff --git a/cloudinit/util.py b/cloudinit/util.py
index 445e3d4c..ab2df59e 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -749,37 +749,6 @@ def del_dir(path):
     shutil.rmtree(path)
 
 
-def runparts(dirp, skip_no_exist=True, exe_prefix=None):
-    if skip_no_exist and not os.path.isdir(dirp):
-        return
-
-    failed = []
-    attempted = []
-
-    if exe_prefix is None:
-        prefix = []
-    elif isinstance(exe_prefix, str):
-        prefix = [str(exe_prefix)]
-    elif isinstance(exe_prefix, list):
-        prefix = exe_prefix
-    else:
-        raise TypeError("exe_prefix must be None, str, or list")
-
-    for exe_name in sorted(os.listdir(dirp)):
-        exe_path = os.path.join(dirp, exe_name)
-        if os.path.isfile(exe_path) and os.access(exe_path, os.X_OK):
-            attempted.append(exe_path)
-            try:
-                subp.subp(prefix + [exe_path], capture=False)
-            except subp.ProcessExecutionError as e:
-                logexc(LOG, "Failed running %s [%s]", exe_path, e.exit_code)
-                failed.append(e)
-
-    if failed and attempted:
-        raise RuntimeError('Runparts: %s failures in %s attempted commands'
-                           % (len(failed), len(attempted)))
-
-
 # read_optional_seed
 # returns boolean indicating success or failure (presense of files)
 # if files are present, populates 'fill' dictionary with 'user-data' and