esp-idf/tools/find_apps.py

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#!/usr/bin/env python
# coding=utf-8
#
# ESP-IDF helper script to enumerate the builds of multiple configurations of multiple apps.
# Produces the list of builds. The list can be consumed by build_apps.py, which performs the actual builds.
import argparse
import os
import sys
import re
import glob
import logging
import typing
from find_build_apps import (
BUILD_SYSTEMS,
BUILD_SYSTEM_CMAKE,
BuildSystem,
BuildItem,
setup_logging,
ConfigRule,
config_rules_from_str,
DEFAULT_TARGET,
)
# Helper functions
def dict_from_sdkconfig(path):
"""
Parse the sdkconfig file at 'path', return name:value pairs as a dict
"""
regex = re.compile(r"^([^#=]+)=(.+)$")
result = {}
with open(path) as f:
for line in f:
m = regex.match(line)
if m:
val = m.group(2)
if val.startswith('"') and val.endswith('"'):
val = val[1:-1]
result[m.group(1)] = val
return result
# Main logic: enumerating apps and builds
def find_builds_for_app(
app_path, work_dir, build_dir, build_log, target_arg, build_system,
config_rules): # type: (str, str, str, str, str, str, typing.List[ConfigRule]) -> typing.List[BuildItem]
"""
Find configurations (sdkconfig file fragments) for the given app, return them as BuildItem objects
:param app_path: app directory (can be / usually will be a relative path)
:param work_dir: directory where the app should be copied before building.
May contain env. variables and placeholders.
:param build_dir: directory where the build will be done, relative to the work_dir. May contain placeholders.
:param build_log: path of the build log. May contain placeholders. May be None, in which case the log should go
into stdout/stderr.
:param target_arg: the value of IDF_TARGET passed to the script. Used to filter out configurations with
a different CONFIG_IDF_TARGET value.
:param build_system: name of the build system, index into BUILD_SYSTEMS dictionary
:param config_rules: mapping of sdkconfig file name patterns to configuration names
:return: list of BuildItems representing build configuration of the app
"""
build_items = [] # type: typing.List[BuildItem]
default_config_name = ""
for rule in config_rules:
if not rule.file_name:
default_config_name = rule.config_name
continue
sdkconfig_paths = glob.glob(os.path.join(app_path, rule.file_name))
sdkconfig_paths = sorted(sdkconfig_paths)
for sdkconfig_path in sdkconfig_paths:
# Check if the sdkconfig file specifies IDF_TARGET, and if it is matches the --target argument.
sdkconfig_dict = dict_from_sdkconfig(sdkconfig_path)
target_from_config = sdkconfig_dict.get("CONFIG_IDF_TARGET")
if target_from_config is not None and target_from_config != target_arg:
logging.debug("Skipping sdkconfig {} which requires target {}".format(
sdkconfig_path, target_from_config))
continue
# Figure out the config name
config_name = rule.config_name or ""
if "*" in rule.file_name:
# convert glob pattern into a regex
regex_str = r".*" + rule.file_name.replace(".", r"\.").replace("*", r"(.*)")
groups = re.match(regex_str, sdkconfig_path)
assert groups
config_name = groups.group(1)
sdkconfig_path = os.path.relpath(sdkconfig_path, app_path)
logging.debug('Adding build: app {}, sdkconfig {}, config name "{}"'.format(
app_path, sdkconfig_path, config_name))
build_items.append(
BuildItem(
app_path,
work_dir,
build_dir,
build_log,
target_arg,
sdkconfig_path,
config_name,
build_system,
))
if not build_items:
logging.debug('Adding build: app {}, default sdkconfig, config name "{}"'.format(app_path, default_config_name))
return [
BuildItem(
app_path,
work_dir,
build_dir,
build_log,
target_arg,
None,
default_config_name,
build_system,
)
]
return build_items
def find_apps(build_system_class, path, recursive, exclude_list,
target): # type: (typing.Type[BuildSystem], str, bool, typing.List[str], str) -> typing.List[str]
"""
Find app directories in path (possibly recursively), which contain apps for the given build system, compatible
with the given target.
:param build_system_class: class derived from BuildSystem, representing the build system in use
:param path: path where to look for apps
:param recursive: whether to recursively descend into nested directories if no app is found
:param exclude_list: list of paths to be excluded from the recursive search
:param target: desired value of IDF_TARGET; apps incompatible with the given target are skipped.
:return: list of paths of the apps found
"""
build_system_name = build_system_class.NAME
logging.debug("Looking for {} apps in {}{}".format(build_system_name, path, " recursively" if recursive else ""))
if not recursive:
if exclude_list:
logging.warn("--exclude option is ignored when used without --recursive")
if not build_system_class.is_app(path):
logging.warn("Path {} specified without --recursive flag, but no {} app found there".format(
path, build_system_name))
return []
return [path]
# The remaining part is for recursive == True
apps_found = [] # type: typing.List[str]
for root, dirs, _ in os.walk(path, topdown=True):
logging.debug("Entering {}".format(root))
if root in exclude_list:
logging.debug("Skipping {} (excluded)".format(root))
del dirs[:]
continue
if build_system_class.is_app(root):
logging.debug("Found {} app in {}".format(build_system_name, root))
# Don't recurse into app subdirectories
del dirs[:]
supported_targets = build_system_class.supported_targets(root)
if supported_targets and target not in supported_targets:
logging.debug("Skipping, app only supports targets: " + ", ".join(supported_targets))
continue
apps_found.append(root)
return apps_found
def main():
parser = argparse.ArgumentParser(description="Tool to generate build steps for IDF apps")
parser.add_argument(
"-v",
"--verbose",
action="count",
help="Increase the logging level of the script. Can be specified multiple times.",
)
parser.add_argument(
"--log-file",
type=argparse.FileType("w"),
help="Write the script log to the specified file, instead of stderr",
)
parser.add_argument(
"--recursive",
action="store_true",
help="Look for apps in the specified directories recursively.",
)
parser.add_argument("--build-system", choices=BUILD_SYSTEMS.keys(), default=BUILD_SYSTEM_CMAKE)
parser.add_argument(
"--work-dir",
help="If set, the app is first copied into the specified directory, and then built." +
"If not set, the work directory is the directory of the app.",
)
parser.add_argument(
"--config",
action="append",
help="Adds configurations (sdkconfig file names) to build. This can either be " +
"FILENAME[=NAME] or FILEPATTERN. FILENAME is the name of the sdkconfig file, " +
"relative to the project directory, to be used. Optional NAME can be specified, " +
"which can be used as a name of this configuration. FILEPATTERN is the name of " +
"the sdkconfig file, relative to the project directory, with at most one wildcard. " +
"The part captured by the wildcard is used as the name of the configuration.",
)
parser.add_argument(
"--build-dir",
help="If set, specifies the build directory name. Can expand placeholders. Can be either a " +
"name relative to the work directory, or an absolute path.",
)
parser.add_argument(
"--build-log",
help="If specified, the build log will be written to this file. Can expand placeholders.",
)
parser.add_argument("--target", help="Build apps for given target.")
parser.add_argument(
"--format",
default="json",
choices=["json"],
help="Format to write the list of builds as",
)
parser.add_argument(
"--exclude",
action="append",
help="Ignore specified directory (if --recursive is given). Can be used multiple times.",
)
parser.add_argument(
"-o",
"--output",
type=argparse.FileType("w"),
help="Output the list of builds to the specified file",
)
parser.add_argument("paths", nargs="+", help="One or more app paths.")
args = parser.parse_args()
setup_logging(args)
build_system_class = BUILD_SYSTEMS[args.build_system]
# If the build target is not set explicitly, get it from the environment or use the default one (esp32)
if not args.target:
env_target = os.environ.get("IDF_TARGET")
if env_target:
logging.info("--target argument not set, using IDF_TARGET={} from the environment".format(env_target))
args.target = env_target
else:
logging.info("--target argument not set, using IDF_TARGET={} as the default".format(DEFAULT_TARGET))
args.target = DEFAULT_TARGET
# Prepare the list of app paths
app_paths = [] # type: typing.List[str]
for path in args.paths:
app_paths += find_apps(build_system_class, path, args.recursive, args.exclude or [], args.target)
if not app_paths:
logging.critical("No {} apps found".format(build_system_class.NAME))
raise SystemExit(1)
logging.info("Found {} apps".format(len(app_paths)))
app_paths = sorted(app_paths)
# Find compatible configurations of each app, collect them as BuildItems
build_items = [] # type: typing.List[BuildItem]
config_rules = config_rules_from_str(args.config or [])
for app_path in app_paths:
build_items += find_builds_for_app(
app_path,
args.work_dir,
args.build_dir,
args.build_log,
args.target,
args.build_system,
config_rules,
)
logging.info("Found {} builds".format(len(build_items)))
# Write out the BuildItems. Only JSON supported now (will add YAML later).
if args.format != "json":
raise NotImplementedError()
out = args.output or sys.stdout
out.writelines([item.to_json() + "\n" for item in build_items])
if __name__ == "__main__":
main()