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configure.py
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#!/usr/bin/env python
from __future__ import print_function
import os
import sys
import glob
import argparse
import ninja_syntax
class Configuration:
def __init__(self, options):
self.root_dir = os.path.dirname(os.path.abspath(__file__))
self.source_dir = os.path.join(self.root_dir, "src")
self.build_dir = os.path.join(self.root_dir, "build")
self.artifact_dir = self.root_dir
self.writer = ninja_syntax.Writer(open(os.path.join(self.root_dir, "build.ninja"), "w"))
self.object_ext = ".o"
# Variables
cflags = ["-std=gnu11", "-g", "-Wall", "-Werror", "-Wno-error=unused-variable", "-fcolor-diagnostics"]
ldflags = ["-g", "-Wl,-fuse-ld=gold"]
self.writer.variable("cc", "clang")
self.writer.variable("cflags", " ".join(cflags))
self.writer.variable("ldflags", " ".join(ldflags))
self.writer.variable("optflags", "-O2")
self.writer.variable("includes", "-I" + self.source_dir)
self.writer.variable("python", "python")
self.writer.variable("spec_compiler", "$python " + os.path.join(self.root_dir, "tools", "spec-compiler.py"))
self.writer.variable("spec_collector", "$python " + os.path.join(self.root_dir, "tools", "spec-collector.py"))
if not sys.platform.startswith("linux"):
print("Unsupported platform: %s" % sys.platform, file=sys.stdout)
sys.exit(1)
# Rules
self.writer.rule("cc", "$cc -o $out -c $in -MMD -MF $out.d $optflags $cflags $includes",
deps="gcc", depfile="$out.d",
description="CC $descpath")
self.writer.rule("ccld", "$cc $ldflags $libdirs -o $out $in $libs",
description="CCLD $descpath")
self.writer.rule("spec-compile", "$spec_compiler $in --code $code --header $header",
description="COMPILE $descpath")
self.writer.rule("spec-collect", "$spec_collector $in --code $code --header $header",
description="COLLECT $descpath")
self.writer.rule("install", "install -m $mode $in $out",
description="INSTALL $descpath")
self.writer.rule("enable", "systemctl enable $service",
description="ENABLE $service")
self.writer.rule("start", "systemctl start $service",
description="START $service")
self.writer.rule("stop", "systemctl stop $service",
description="STOP $service")
def check(self):
"""Checks system requirements for WebRunner"""
import sys
if not sys.platform.startswith("linux"):
print("Unsupported platform %s: WebRunner is a Linux-only software" % sys.platform, file=sys.stdout)
sys.exit(1)
import platform
import re
kernel_version_match = re.match(r"\d+\.\d+\.\d+", platform.release())
if kernel_version_match:
kernel_release = tuple(map(int, kernel_version_match.group(0).split(".")))
if kernel_release < (3,17,):
print("Unsupported Linux kernel %s: WebRunner requires Linux 3.17+" % kernel_version_match.group(0))
sys.exit(1)
def cc(self, source_file, object_file=None):
if not os.path.isabs(source_file):
source_file = os.path.join(self.source_dir, source_file)
if object_file is None:
object_file = os.path.join(self.build_dir, os.path.relpath(source_file, self.source_dir)) + self.object_ext
elif not os.path.isabs(object_file):
object_file = os.path.join(self.build_dir, object_file)
variables = {
"descpath": os.path.relpath(source_file, self.source_dir)
}
self.writer.build(object_file, "cc", source_file, variables=variables)
return object_file
def ccld(self, object_files, executable_file):
if not os.path.isabs(executable_file):
executable_file = os.path.join(self.artifact_dir, executable_file)
variables = {
"descpath": os.path.relpath(executable_file, self.artifact_dir)
}
self.writer.build(executable_file, "ccld", object_files, variables=variables)
return executable_file
def spec_compile(self, spec_file, code_file=None, header_file=None):
if not os.path.isabs(spec_file):
spec_file = os.path.join(self.source_dir, spec_file)
if code_file is None:
code_file = os.path.splitext(spec_file)[0] + "-gen.c"
elif not os.path.isabs(code_file):
code_file = os.path.join(self.source_dir, code_file)
if header_file is None:
header_file = os.path.splitext(code_file)[0] + ".h"
elif not os.path.isabs(header_file):
header_file = os.path.join(self.source_dir, header_file)
variables = {
"descpath": os.path.relpath(spec_file, self.source_dir),
"code": code_file,
"header": header_file
}
self.writer.build([code_file, header_file], "spec-compile", spec_file, variables=variables)
return code_file, header_file
def spec_collect(self, spec_files, code_file, header_file):
spec_files = [f if os.path.isabs(f) else os.path.join(self.source_dir, f) for f in spec_files]
if not os.path.isabs(code_file):
code_file = os.path.join(self.source_dir, code_file)
if not os.path.isabs(header_file):
header_file = os.path.join(self.source_dir, header_file)
variables = {
"descpath": os.path.relpath(code_file, self.source_dir),
"code": code_file,
"header": header_file
}
self.writer.build([code_file, header_file], "spec-collect", spec_files, variables=variables)
return code_file, header_file
def install(self, local_path, system_path, mode="644"):
if not os.path.isabs(local_path):
local_path = os.path.join(self.root_dir, local_path)
variables = {
"mode": mode,
"descpath": os.path.relpath(local_path, self.root_dir)
}
self.writer.build(system_path, "install", local_path, variables=variables)
return system_path
def enable(self, deps, service, target_name="enable"):
self.writer.build(target_name, "enable", deps, variables=dict(service=service))
def start(self, deps, service, target_name="start"):
self.writer.build(target_name, "start", deps, variables=dict(service=service))
def stop(self, deps, service, target_name="stop"):
self.writer.build(target_name, "stop", deps, variables=dict(service=service))
def phony(self, name, targets):
if isinstance(targets, str):
targets = [targets]
self.writer.build(name, "phony", " & ".join(targets))
def default(self, target):
self.writer.default(target)
parser = argparse.ArgumentParser(description="WebRunner configuration script")
def main():
options = parser.parse_args()
config = Configuration(options)
kernel_specifications = []
kernel_objects = []
for source_dir, _, filenames in os.walk(os.path.join(config.source_dir, "kernels")):
for filename in filenames:
if os.path.basename(filename).startswith("."):
continue
fileext = os.path.splitext(filename)[1]
if fileext == ".xml":
specification_file = os.path.join(source_dir, filename)
gen_c_file, gen_h_file = config.spec_compile(specification_file)
gen_object = config.cc(gen_c_file)
kernel_specifications.append(specification_file)
kernel_objects.append(gen_object)
elif fileext == ".c" and not filename.endswith("-gen.c"):
kernel_objects.append(config.cc(os.path.join(source_dir, filename)))
config.spec_collect(kernel_specifications, "runner/spec.c", "runner/spec.h")
webserver_objects = [
config.cc("webserver/server.c"),
config.cc("webserver/request.c"),
config.cc("webserver/options.c"),
config.cc("webserver/logs.c"),
config.cc("webserver/http.c"),
config.cc("webserver/parse.c"),
]
runner_objects = [
config.cc("runner/perfctr.c"),
config.cc("runner/median.c"),
config.cc("runner/sandbox.c"),
config.cc("runner/loader.c"),
config.cc("runner/spec.c"),
]
webrunner = config.ccld(webserver_objects + runner_objects + kernel_objects, "webrunner")
config.default(webrunner)
webrunner_program = config.install(webrunner, "/usr/sbin/webrunner", mode="755")
webrunner_service = config.install("webrunner.service", "/etc/systemd/system/webrunner.service")
config.enable([webrunner_program, webrunner_service], "webrunner.service")
config.start([], "webrunner.service")
config.stop([], "webrunner.service")
config.phony("install", ["enable"])
if __name__ == "__main__":
sys.exit(main())