| #!/usr/bin/env python |
| |
| r""" |
| This module provides functions which are useful for running plug-ins. |
| """ |
| |
| import sys |
| import os |
| import glob |
| |
| import gen_print as gp |
| import gen_misc as gm |
| |
| # Some help text that is common to more than one program. |
| plug_in_dir_paths_help_text = \ |
| 'This is a colon-separated list of plug-in directory paths. If one' +\ |
| ' of the entries in the list is a plain directory name (i.e. no' +\ |
| ' path info), it will be taken to be a native plug-in. In that case,' +\ |
| ' %(prog)s will search for the native plug-in in the "plug-ins"' +\ |
| ' subdirectory of each path in the PATH environment variable until it' +\ |
| ' is found. Also, integrated plug-ins will automatically be appended' +\ |
| ' to your plug_in_dir_paths list. An integrated plug-in is any plug-in' +\ |
| ' found using the PATH variable that contains a file named "integrated".' |
| |
| mch_class_help_text = \ |
| 'The class of machine that we are testing (e.g. "op" = "open power",' +\ |
| ' "obmc" = "open bmc", etc).' |
| |
| PATH_LIST = gm.return_path_list() |
| |
| |
| def get_plug_in_base_paths(): |
| r""" |
| Get plug-in base paths and return them as a list. |
| |
| This function searches the PATH_LIST (created from PATH environment |
| variable) for any paths that have a "plug_ins" subdirectory. All such |
| paths are considered plug_in_base paths. |
| """ |
| |
| global PATH_LIST |
| |
| plug_in_base_path_list = [] |
| |
| for path in PATH_LIST: |
| candidate_plug_in_base_path = path + "plug_ins/" |
| if os.path.isdir(candidate_plug_in_base_path): |
| plug_in_base_path_list.append(candidate_plug_in_base_path) |
| |
| return plug_in_base_path_list |
| |
| |
| # Define global plug_in_base_path_list and call get_plug_in_base_paths to set |
| # its value. |
| plug_in_base_path_list = get_plug_in_base_paths() |
| |
| |
| def find_plug_in_package(plug_in_name): |
| r""" |
| Find and return the normalized directory path of the specified plug in. |
| This is done by searching the global plug_in_base_path_list. |
| |
| Description of arguments: |
| plug_in_name The unqualified name of the plug-in |
| package. |
| """ |
| |
| global plug_in_base_path_list |
| for plug_in_base_dir_path in plug_in_base_path_list: |
| candidate_plug_in_dir_path = os.path.normpath(plug_in_base_dir_path |
| + plug_in_name) + \ |
| os.sep |
| if os.path.isdir(candidate_plug_in_dir_path): |
| return candidate_plug_in_dir_path |
| |
| return "" |
| |
| |
| def validate_plug_in_package(plug_in_dir_path, |
| mch_class="obmc"): |
| r""" |
| Validate the plug in package and return the normalized plug-in directory |
| path. |
| |
| Description of arguments: |
| plug_in_dir_path The "relative" or absolute path to a plug |
| in package directory. |
| mch_class The class of machine that we are testing |
| (e.g. "op" = "open power", "obmc" = "open |
| bmc", etc). |
| """ |
| |
| gp.dprint_executing() |
| |
| if os.path.isabs(plug_in_dir_path): |
| # plug_in_dir_path begins with a slash so it is an absolute path. |
| candidate_plug_in_dir_path = os.path.normpath(plug_in_dir_path) +\ |
| os.sep |
| if not os.path.isdir(candidate_plug_in_dir_path): |
| gp.print_error_report("Plug-in directory path \"" |
| + plug_in_dir_path + "\" does not exist.\n") |
| exit(1) |
| else: |
| # The plug_in_dir_path is actually a simple name (e.g. |
| # "OBMC_Sample")... |
| candidate_plug_in_dir_path = find_plug_in_package(plug_in_dir_path) |
| if candidate_plug_in_dir_path == "": |
| global PATH_LIST |
| gp.print_error_report("Plug-in directory path \"" |
| + plug_in_dir_path + "\" could not be found" |
| + " in any of the following directories:\n" |
| + gp.sprint_var(PATH_LIST)) |
| exit(1) |
| # Make sure that this plug-in supports us... |
| supports_file_path = candidate_plug_in_dir_path + "supports_" + mch_class |
| if not os.path.exists(supports_file_path): |
| gp.print_error_report("The following file path could not be" |
| + " found:\n" |
| + gp.sprint_varx("supports_file_path", |
| supports_file_path) |
| + "\nThis file is necessary to indicate that" |
| + " the given plug-in supports the class of" |
| + " machine we are testing, namely \"" |
| + mch_class + "\".\n") |
| exit(1) |
| |
| return candidate_plug_in_dir_path |
| |
| |
| def return_integrated_plug_ins(mch_class="obmc"): |
| r""" |
| Return a list of integrated plug-ins. Integrated plug-ins are plug-ins |
| which are selected without regard for whether the user has specified them. |
| In other words, they are "integrated" into the program suite. The |
| programmer designates a plug-in as integrated by putting a file named |
| "integrated" into the plug-in package directory. |
| |
| Description of arguments: |
| mch_class The class of machine that we are testing |
| (e.g. "op" = "open power", "obmc" = "open |
| bmc", etc). |
| """ |
| |
| global plug_in_base_path_list |
| |
| integrated_plug_ins_list = [] |
| |
| DEBUG_SKIP_INTEGRATED = int(os.getenv('DEBUG_SKIP_INTEGRATED', '0')) |
| |
| if DEBUG_SKIP_INTEGRATED: |
| return integrated_plug_ins_list |
| |
| for plug_in_base_path in plug_in_base_path_list: |
| # Get a list of all plug-in paths that support our mch_class. |
| mch_class_candidate_list = glob.glob(plug_in_base_path |
| + "*/supports_" + mch_class) |
| for candidate_path in mch_class_candidate_list: |
| integrated_plug_in_dir_path = os.path.dirname(candidate_path) +\ |
| os.sep |
| integrated_file_path = integrated_plug_in_dir_path + "integrated" |
| if os.path.exists(integrated_file_path): |
| plug_in_name = \ |
| os.path.basename(os.path.dirname(candidate_path)) |
| if plug_in_name not in integrated_plug_ins_list: |
| # If this plug-in has not already been added to the list... |
| integrated_plug_ins_list.append(plug_in_name) |
| |
| return integrated_plug_ins_list |
| |
| |
| def return_plug_in_packages_list(plug_in_dir_paths, |
| mch_class="obmc"): |
| r""" |
| Return a list of plug-in packages given the plug_in_dir_paths string. |
| This function calls validate_plug_in_package so it will fail if |
| plug_in_dir_paths contains any invalid plug-ins. |
| |
| Description of arguments: |
| plug_in_dir_path The "relative" or absolute path to a plug |
| in package directory. |
| mch_class The class of machine that we are testing |
| (e.g. "op" = "open power", "obmc" = "open |
| bmc", etc). |
| """ |
| |
| if plug_in_dir_paths != "": |
| plug_in_packages_list = plug_in_dir_paths.split(":") |
| else: |
| plug_in_packages_list = [] |
| |
| # Get a list of integrated plug-ins (w/o full path names). |
| integrated_plug_ins_list = return_integrated_plug_ins(mch_class) |
| # Put both lists together in plug_in_packages_list with no duplicates. |
| # NOTE: This won't catch duplicates if the caller specifies the full path |
| # name of a native plug-in but that should be rare enough. |
| |
| plug_in_packages_list = plug_in_packages_list + integrated_plug_ins_list |
| |
| plug_in_packages_list = \ |
| list(set([validate_plug_in_package(path, mch_class) |
| for path in plug_in_packages_list])) |
| |
| return plug_in_packages_list |