mirror of https://github.com/m-labs/artiq.git
230 lines
7.5 KiB
Python
230 lines
7.5 KiB
Python
import asyncio
|
|
import os
|
|
import tempfile
|
|
import shutil
|
|
import time
|
|
import logging
|
|
|
|
from sipyco.sync_struct import Notifier, update_from_dict
|
|
|
|
from artiq.master.worker import (Worker, WorkerInternalException,
|
|
log_worker_exception)
|
|
from artiq.tools import get_windows_drives, exc_to_warning
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class _RepoScanner:
|
|
def __init__(self, worker_handlers):
|
|
self.worker_handlers = worker_handlers
|
|
self.worker = None
|
|
|
|
async def process_file(self, entry_dict, root, filename):
|
|
logger.debug("processing file %s %s", root, filename)
|
|
try:
|
|
description = await self.worker.examine(
|
|
"scan", os.path.join(root, filename))
|
|
except:
|
|
log_worker_exception()
|
|
raise
|
|
for class_name, class_desc in description.items():
|
|
name = class_desc["name"]
|
|
if "/" in name:
|
|
logger.warning("Character '/' is not allowed in experiment "
|
|
"name (%s)", name)
|
|
name = name.replace("/", "_")
|
|
if name in entry_dict:
|
|
basename = name
|
|
i = 1
|
|
while name in entry_dict:
|
|
name = basename + str(i)
|
|
i += 1
|
|
logger.warning("Duplicate experiment name: '%s'\n"
|
|
"Renaming class '%s' in '%s' to '%s'",
|
|
basename, class_name, filename, name)
|
|
entry = {
|
|
"file": filename,
|
|
"class_name": class_name,
|
|
"arginfo": class_desc["arginfo"],
|
|
"argument_ui": class_desc["argument_ui"],
|
|
"scheduler_defaults": class_desc["scheduler_defaults"]
|
|
}
|
|
entry_dict[name] = entry
|
|
|
|
async def _scan(self, root, subdir=""):
|
|
entry_dict = dict()
|
|
for de in os.scandir(os.path.join(root, subdir)):
|
|
if de.name.startswith("."):
|
|
continue
|
|
if de.is_file() and de.name.endswith(".py"):
|
|
filename = os.path.join(subdir, de.name)
|
|
try:
|
|
await self.process_file(entry_dict, root, filename)
|
|
except Exception as exc:
|
|
logger.warning("Skipping file '%s'", filename,
|
|
exc_info=not isinstance(exc, WorkerInternalException))
|
|
# restart worker
|
|
await self.worker.close()
|
|
self.worker = Worker(self.worker_handlers)
|
|
if de.is_dir():
|
|
subentries = await self._scan(
|
|
root, os.path.join(subdir, de.name))
|
|
entries = {de.name + "/" + k: v for k, v in subentries.items()}
|
|
entry_dict.update(entries)
|
|
return entry_dict
|
|
|
|
async def scan(self, root, subdir=""):
|
|
self.worker = Worker(self.worker_handlers)
|
|
try:
|
|
r = await self._scan(root, subdir)
|
|
finally:
|
|
await self.worker.close()
|
|
return r
|
|
|
|
|
|
class ExperimentDB:
|
|
def __init__(self, repo_backend, worker_handlers, experiment_subdir=""):
|
|
self.repo_backend = repo_backend
|
|
self.worker_handlers = worker_handlers
|
|
self.experiment_subdir = experiment_subdir
|
|
|
|
self.cur_rev = self.repo_backend.get_head_rev()
|
|
self.repo_backend.request_rev(self.cur_rev)
|
|
self.explist = Notifier(dict())
|
|
self._scanning = False
|
|
|
|
self.status = Notifier({
|
|
"scanning": False,
|
|
"cur_rev": self.cur_rev
|
|
})
|
|
|
|
def close(self):
|
|
# The object cannot be used anymore after calling this method.
|
|
self.repo_backend.release_rev(self.cur_rev)
|
|
|
|
async def scan_repository(self, new_cur_rev=None):
|
|
if self._scanning:
|
|
return
|
|
self._scanning = True
|
|
self.status["scanning"] = True
|
|
try:
|
|
if new_cur_rev is None:
|
|
new_cur_rev = self.repo_backend.get_head_rev()
|
|
wd, _, _ = self.repo_backend.request_rev(new_cur_rev)
|
|
self.repo_backend.release_rev(self.cur_rev)
|
|
self.cur_rev = new_cur_rev
|
|
self.status["cur_rev"] = new_cur_rev
|
|
t1 = time.monotonic()
|
|
new_explist = await _RepoScanner(self.worker_handlers).scan(
|
|
wd, self.experiment_subdir)
|
|
logger.info("repository scan took %d seconds", time.monotonic()-t1)
|
|
update_from_dict(self.explist, new_explist)
|
|
finally:
|
|
self._scanning = False
|
|
self.status["scanning"] = False
|
|
|
|
def scan_repository_async(self, new_cur_rev=None, loop=None):
|
|
asyncio.ensure_future(
|
|
exc_to_warning(self.scan_repository(new_cur_rev)), loop=loop)
|
|
|
|
async def examine(self, filename, use_repository=True, revision=None):
|
|
if use_repository:
|
|
if revision is None:
|
|
revision = self.cur_rev
|
|
wd, _, revision = self.repo_backend.request_rev(revision)
|
|
filename = os.path.join(wd, filename)
|
|
worker = Worker(self.worker_handlers)
|
|
try:
|
|
description = await worker.examine("examine", filename)
|
|
finally:
|
|
await worker.close()
|
|
if use_repository:
|
|
self.repo_backend.release_rev(revision)
|
|
return description
|
|
|
|
def list_directory(self, directory):
|
|
r = []
|
|
prefix = ""
|
|
if not directory:
|
|
if os.name == "nt":
|
|
drives = get_windows_drives()
|
|
return [drive + ":\\" for drive in drives]
|
|
else:
|
|
directory = "/"
|
|
prefix = "/"
|
|
for de in os.scandir(directory):
|
|
if de.is_dir():
|
|
r.append(prefix + de.name + os.path.sep)
|
|
else:
|
|
r.append(prefix + de.name)
|
|
return r
|
|
|
|
|
|
class FilesystemBackend:
|
|
def __init__(self, root):
|
|
self.root = os.path.abspath(root)
|
|
|
|
def get_head_rev(self):
|
|
return "N/A"
|
|
|
|
def request_rev(self, rev):
|
|
return self.root, None, "N/A"
|
|
|
|
def release_rev(self, rev):
|
|
pass
|
|
|
|
|
|
class _GitCheckout:
|
|
def __init__(self, git, rev):
|
|
self.path = tempfile.mkdtemp()
|
|
commit = git.get(rev)
|
|
git.checkout_tree(commit, directory=self.path)
|
|
self.message = commit.message.strip()
|
|
self.ref_count = 1
|
|
logger.info("checked out revision %s into %s", rev, self.path)
|
|
|
|
def dispose(self):
|
|
logger.info("disposing of checkout in folder %s", self.path)
|
|
shutil.rmtree(self.path)
|
|
|
|
|
|
class GitBackend:
|
|
def __init__(self, root):
|
|
# lazy import - make dependency optional
|
|
import pygit2
|
|
|
|
self.git = pygit2.Repository(root)
|
|
self.checkouts = dict()
|
|
|
|
def get_head_rev(self):
|
|
return str(self.git.head.target)
|
|
|
|
def _get_pinned_rev(self, rev):
|
|
"""
|
|
Resolve a git reference (e.g. "HEAD", "master", "abcdef123456...") into
|
|
a git hash
|
|
"""
|
|
commit, _ = self.git.resolve_refish(rev)
|
|
|
|
logger.debug('Resolved git ref "%s" into "%s"', rev, commit.hex)
|
|
|
|
return commit.hex
|
|
|
|
def request_rev(self, rev):
|
|
rev = self._get_pinned_rev(rev)
|
|
if rev in self.checkouts:
|
|
co = self.checkouts[rev]
|
|
co.ref_count += 1
|
|
else:
|
|
co = _GitCheckout(self.git, rev)
|
|
self.checkouts[rev] = co
|
|
return co.path, co.message, rev
|
|
|
|
def release_rev(self, rev):
|
|
co = self.checkouts[rev]
|
|
co.ref_count -= 1
|
|
if not co.ref_count:
|
|
co.dispose()
|
|
del self.checkouts[rev]
|