CSIT-1101: Optimize input data processing

 - Add multiprocessing

Change-Id: Iaeb9dcf0f4523de379ecb7f775b941d9deb080b2
Signed-off-by: Tibor Frank <tifrank@cisco.com>

1 files changed, 75 insertions, 61 deletions

diff --git a/resources/tools/presentation/input_data_files.py b/resources/tools/presentation/input_data_files.py
index 9e0cfa6931..cde6d1acc4 100644
--- a/resources/tools/presentation/input_data_files.py
+++ b/resources/tools/presentation/input_data_files.py
@@ -16,11 +16,9 @@ Download all data.
 """
 
 import re
-import logging
 
-from os import rename
+from os import rename, mkdir
 from os.path import join
-from shutil import move
 from zipfile import ZipFile, is_zipfile, BadZipfile
 from httplib import responses
 from requests import get, codes, RequestException, Timeout, TooManyRedirects, \
@@ -38,31 +36,33 @@ SEPARATOR = "__"
 REGEX_RELEASE = re.compile(r'(\D*)(\d{4}|master)(\D*)')
 
 
-def _download_file(url, file_name):
+def _download_file(url, file_name, log):
     """Download a file with input data.
 
     :param url: URL to the file to download.
     :param file_name: Name of file to download.
+    :param log: List of log messages.
     :type url: str
     :type file_name: str
+    :type log: list of tuples (severity, msg)
     :returns: True if the download was successful, otherwise False.
     :rtype: bool
     """
 
     success = False
     try:
-        logging.info("      Connecting to '{0}' ...".format(url))
+        log.append(("INFO", "    Connecting to '{0}' ...".format(url)))
 
         response = get(url, stream=True)
         code = response.status_code
 
-        logging.info("      {0}: {1}".format(code, responses[code]))
+        log.append(("INFO", "    {0}: {1}".format(code, responses[code])))
 
         if code != codes["OK"]:
             return False
 
-        logging.info("      Downloading the file '{0}' to '{1}' ...".
-                     format(url, file_name))
+        log.append(("INFO", "    Downloading the file '{0}' to '{1}' ...".
+                    format(url, file_name)))
 
         file_handle = open(file_name, "wb")
         for chunk in response.iter_content(chunk_size=CHUNK_SIZE):
@@ -71,38 +71,38 @@ def _download_file(url, file_name):
         file_handle.close()
         success = True
     except ConnectionError as err:
-        logging.error("Not possible to connect to '{0}'.".format(url))
-        logging.debug(str(err))
+        log.append(("ERROR", "Not possible to connect to '{0}'.".format(url)))
+        log.append(("DEBUG", str(err)))
     except HTTPError as err:
-        logging.error("Invalid HTTP response from '{0}'.".format(url))
-        logging.debug(str(err))
+        log.append(("ERROR", "Invalid HTTP response from '{0}'.".format(url)))
+        log.append(("DEBUG", str(err)))
     except TooManyRedirects as err:
-        logging.error("Request exceeded the configured number "
-                      "of maximum re-directions.")
-        logging.debug(str(err))
+        log.append(("ERROR", "Request exceeded the configured number "
+                             "of maximum re-directions."))
+        log.append(("DEBUG", str(err)))
     except Timeout as err:
-        logging.error("Request timed out.")
-        logging.debug(str(err))
+        log.append(("ERROR", "Request timed out."))
+        log.append(("DEBUG", str(err)))
     except RequestException as err:
-        logging.error("Unexpected HTTP request exception.")
-        logging.debug(str(err))
+        log.append(("ERROR", "Unexpected HTTP request exception."))
+        log.append(("DEBUG", str(err)))
     except (IOError, ValueError, KeyError) as err:
-        logging.error("Download failed.")
-        logging.debug(str(err))
+        log.append(("ERROR", "Download failed."))
+        log.append(("DEBUG", str(err)))
 
-    logging.info("      Download finished.")
+    log.append(("INFO", "    Download finished."))
     return success
 
 
-def _unzip_file(spec, job, build):
+def _unzip_file(spec, build, pid, log):
     """Unzip downloaded source file.
 
     :param spec: Specification read form the specification file.
-    :param job: Name of the Jenkins job.
     :param build: Information about the build.
+    :param log: List of log messages.
     :type spec: Specification
-    :type job: str
     :type build: dict
+    :type log: list of tuples (severity, msg)
     :returns: True if the download was successful, otherwise False.
     :rtype: bool
     """
@@ -110,44 +110,48 @@ def _unzip_file(spec, job, build):
     data_file = spec.input["extract"]
     file_name = build["file-name"]
     directory = spec.environment["paths"]["DIR[WORKING,DATA]"]
+    tmp_dir = join(directory, str(pid))
+    try:
+        mkdir(tmp_dir)
+    except OSError:
+        pass
     new_name = "{0}{1}{2}".format(file_name.rsplit('.')[-2],
                                   SEPARATOR,
                                   data_file.split("/")[-1])
-    logging.info("      Unzipping: '{0}' from '{1}'.".
-                 format(data_file, file_name))
+
+    log.append(("INFO", "    Unzipping: '{0}' from '{1}'.".
+                format(data_file, file_name)))
     try:
         with ZipFile(file_name, 'r') as zip_file:
-            zip_file.extract(data_file, directory)
-        logging.info("      Moving {0} to {1} ...".
-                     format(join(directory, data_file), directory))
-        move(join(directory, data_file), directory)
-        logging.info("      Renaming the file '{0}' to '{1}'".
-                     format(join(directory, data_file.split("/")[-1]),
-                            new_name))
-        rename(join(directory, data_file.split("/")[-1]),
-               new_name)
-        spec.set_input_file_name(job, build["build"],
-                                 new_name)
+            zip_file.extract(data_file, tmp_dir)
+        log.append(("INFO", "    Renaming the file '{0}' to '{1}'".
+                    format(join(tmp_dir, data_file), new_name)))
+        rename(join(tmp_dir, data_file), new_name)
+        build["file-name"] = new_name
         return True
     except (BadZipfile, RuntimeError) as err:
-        logging.error("Failed to unzip the file '{0}': {1}.".
-                      format(file_name, str(err)))
+        log.append(("ERROR", "Failed to unzip the file '{0}': {1}.".
+                    format(file_name, str(err))))
         return False
     except OSError as err:
-        logging.error("Failed to rename the file '{0}': {1}.".
-                      format(data_file, str(err)))
+        log.append(("ERROR", "Failed to rename the file '{0}': {1}.".
+                    format(data_file, str(err))))
         return False
 
 
-def download_and_unzip_data_file(spec, job, build):
+def download_and_unzip_data_file(spec, job, build, pid, log):
     """Download and unzip a source file.
 
     :param spec: Specification read form the specification file.
     :param job: Name of the Jenkins job.
     :param build: Information about the build.
+    :param pid: PID of the process executing this method.
+    :param log: List of log messages.
     :type spec: Specification
     :type job: str
     :type build: dict
+    :type pid: int
+    :type log: list of tuples (severity, msg)
     :returns: True if the download was successful, otherwise False.
     :rtype: bool
     """
@@ -158,7 +162,7 @@ def download_and_unzip_data_file(spec, job, build):
         elif spec.input["file-name"].endswith(".gz"):
             url = spec.environment["urls"]["URL[NEXUS,LOG]"]
         else:
-            logging.error("Not supported file format.")
+            log.append(("ERROR", "Not supported file format."))
             return False
     elif job.startswith("hc2vpp-"):
         url = spec.environment["urls"]["URL[JENKINS,HC]"]
@@ -174,27 +178,35 @@ def download_and_unzip_data_file(spec, job, build):
                     format(job=job, sep=SEPARATOR, build=build["build"],
                            name=file_name))
     # Download the file from the defined source (Jenkins, logs.fd.io):
-    success = _download_file(url, new_name)
+    success = _download_file(url, new_name, log)
+
+    if success and new_name.endswith(".zip"):
+        if not is_zipfile(new_name):
+            success = False
 
     # If not successful, download from docs.fd.io:
     if not success:
-        logging.info("      Trying to download from https://docs.fd.io:")
+        log.append(("INFO", "    Trying to download from https://docs.fd.io:"))
         release = re.search(REGEX_RELEASE, job).group(2)
-        nexus_file_name = "{job}{sep}{build}{sep}{name}". \
-            format(job=job, sep=SEPARATOR, build=build["build"], name=file_name)
-        try:
-            release = "rls{0}".format(int(release))
-        except ValueError:
-            pass
-        url = "{url}/{release}/{dir}/{file}". \
-            format(url=spec.environment["urls"]["URL[NEXUS]"],
-                   release=release,
-                   dir=spec.environment["urls"]["DIR[NEXUS]"],
-                   file=nexus_file_name)
-        success = _download_file(url, new_name)
+        for rls in (release, "master"):
+            nexus_file_name = "{job}{sep}{build}{sep}{name}". \
+                format(job=job, sep=SEPARATOR, build=build["build"],
+                       name=file_name)
+            try:
+                rls = "rls{0}".format(int(rls))
+            except ValueError:
+                pass
+            url = "{url}/{release}/{dir}/{file}". \
+                format(url=spec.environment["urls"]["URL[NEXUS]"],
+                       release=rls,
+                       dir=spec.environment["urls"]["DIR[NEXUS]"],
+                       file=nexus_file_name)
+            success = _download_file(url, new_name, log)
+            if success:
+                break
 
     if success:
-        spec.set_input_file_name(job, build["build"], new_name)
+        build["file-name"] = new_name
     else:
         return False
 
@@ -205,12 +217,14 @@ def download_and_unzip_data_file(spec, job, build):
         else:
             rename(new_name, new_name[:-3])
             execute_command("gzip --keep {0}".format(new_name[:-3]))
-        spec.set_input_file_name(job, build["build"], new_name[:-3])
+        build["file-name"] = new_name[:-3]
 
     if new_name.endswith(".zip"):
         if is_zipfile(new_name):
-            return _unzip_file(spec, job, build)
+            return _unzip_file(spec, build, pid, log)
         else:
+            log.append(("ERROR",
+                        "Zip file '{0}' is corrupted.".format(new_name)))
             return False
     else:
         return True