1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
|
#
# Copyright (C) 2024 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""Log processing utilities"""
import errno
import os
import pty
import re
import time
import shutil
import threading
class ModuleQueue:
"""Class representing a queue of modules being built
There are 2 types of log messages coming from the
underlying build subprocess:
- 'start' message determining that some task for the module
is started
- 'done' message determining that some task for the module
is finished
Then 'start' message comes, the task is stored in ModuleStatus
pending tasks set of the corresponding module in 'active' map.
The module itself is also pushed to front in 'queued'.
Module's status message is updated to the new started task name.
Then 'done' message comes, it is looked up in corresponding module
pending tasks set and popped out.
If it was the last task of the module, its name is displayed
as a status message of the module with 'done' mark. Otherwise,
next pending task is displayed as a status message.
Some messages can be 'start' and 'done' at the same time
(e.g. checkpoint messages). They are popped out immediately,
but update the status message.
"""
class ModuleStatus:
"""Class representing module build status
Used to store a set of pending tasks for each module
and displaying it as a pinned status lines in colored build
log.
message: the message displayed as module status
pending: map of pending (unfinished) tasks for the module,
if there are no pending tasks for a module,
it is treated as done
"""
def __init__(self):
self.message = ""
self.pending = {}
def done(self):
return not self.pending
def __init__(self):
self.queued = []
self.active = {}
def len(self):
diagnostic = "lengths of queued and active should be always equal"
assert len(self.queued) == len(self.active), diagnostic
return len(self.queued)
def insert(self, key, val: tuple[str, bool]):
"""Insert/update a task in module status"""
if key in self.active:
# remove elem from the queue to bring it to the top
self.queued.remove(key)
else:
# allocate new module status entry
self.active[key] = self.ModuleStatus()
self.queued.append(key)
message, done = val
active_entry = self.active[key]
if done:
done_time = 0
if not message:
# consider all pending tasks done
active_entry.pending.clear()
elif message in active_entry.pending:
# remove from pending
done_time = time.time() - active_entry.pending[message]
active_entry.pending.pop(message)
# update module status message
if active_entry.done():
# show last done message if done
active_entry.message = message, done_time, done
else:
# show first pending message if any
message, start_time = list(active_entry.pending.items())[0]
active_entry.message = message, start_time, False
else:
start_time = time.time()
# add task to pending (record its start time)
active_entry.pending[message] = start_time
active_entry.message = message, start_time, done
def pop_front(self):
"""Finds a done module to pop from the queue"""
# find first done entry
pop = None
for m in self.queued:
if self.active[m].done():
pop = m
self.queued.remove(m)
break
if pop is None:
# pops nothing if all remaining modules
# are still building (have at least one pending task)
return None, None
ret = pop, self.active[pop].message
# remove also from the dict
self.active.pop(pop)
return ret
class LogProcessor(threading.Thread):
"""Thread for processing build output
log_*: markers inserted by build system that help
parsing the log, should be the same as defined in
extern/lk/make/macro.mk
pinned_num: number of pinned status lines in build output
stream: build output stream to process
err: Determines which build output stream is attached
True for stderr, False for stdout
pinned: set of ModuleStatus objects that are currently processed
lock: lock to dispatch output from 2 pipe threads (stdout/stderr)
colored: a flag for colored output
log_file: optional file handle to duplicate the output
ansi_escape: regular expression to apply on output before
putting it to the log file (removes clang/rustc colors)
"""
log_prefix = "@log@"
log_done = "@done@"
log_sdone = "@sdone@"
log_print = "@print@"
log_separator = "@:@"
pinned_num = 10
class color:
"""ANSI escape codes for colored output"""
red = "\x1b[31;20m"
bold_red = "\x1b[31;1m"
green = "\x1b[32;20m"
bold_green = "\x1b[32;1m"
yellow = "\x1b[33;20m"
bold_yellow = "\x1b[33;1m"
magenta = "\x1b[35;20m"
bold_magenta = "\x1b[35;1m"
cyan = "\x1b[36;20m"
bold_cyan = "\x1b[36;1m"
white = "\x1b[37;20m"
bold_white = "\x1b[37;1m"
grey = "\x1b[38;20m"
bold = "\x1b[1m"
reset = "\x1b[0m"
def __init__(self, stream, err, pinned, lock, colored, log_file):
threading.Thread.__init__(self)
self.stream = stream
self.err = err
self.pinned = pinned
self.lock = lock
self.colored = colored
self.log_file = log_file
self.ansi_escape = re.compile(r'(\x9B|\x1B\[)[0-?]*[ -\/]*[@-~]')
self.daemon = False
def colorize(self, string, color):
"""Adds color to a string"""
return color + string + self.color.reset if self.colored else string
def display(self, module_status, entry, pinned):
"""Displays a message on terminal"""
module, status = module_status
message, start_time, done = entry
if pinned:
# know actual terminal size, so can adjust status line length
term_width, _ = shutil.get_terminal_size((80, 24))
# make sure whole line fits into a limit (max_total_width)
max_module_width = term_width // 2
if len(module) > max_module_width:
module = "..." + module[-max_module_width + 3:]
mwidth = term_width - len(module) - len(status) - 5 - 10
if mwidth - 3 <= 0:
# too small terminal window?
message = ""
status = status[:mwidth]
elif len(message) > mwidth:
message = "..." + message[-mwidth + 3:]
# color the message
module = self.colorize(module, self.color.bold_green)
status = self.colorize(status, self.color.green)
if done:
message += " " + self.colorize(
f'{start_time:3.1f}s done', self.color.green)
else:
running_time = time.time() - start_time
message += ' ' + self.colorize(
f'{running_time:3.1f}s', self.color.yellow)
print(f'{module}: {status} {message}')
def erase_pinned(self):
"""Erases pinned status lines from the terminal"""
# scroll back to the beginning of pinned messages
# so, next message will print over
nerase = self.pinned_num
print(f'\033[{nerase}A', end = '')
# erase pinned messages before printing new stuff over
print('\033[0J', end = '')
def print_pinned(self):
"""Prints self.pinned_num pinned messages to the terminal"""
# drop some old entries if it is too long
while self.pinned.len() > self.pinned_num:
# pop old done entries from pinned list
module_status, _ = self.pinned.pop_front()
if module_status is None:
# no more entries to pop, leave it as is
break
i = 0
for mstatus in self.pinned.queued:
if i == self.pinned_num:
break
self.display(mstatus, self.pinned.active[mstatus].message, True)
i = i + 1
if i < self.pinned_num:
# padd with empty lines
for i in range(self.pinned_num - self.pinned.len()):
print("")
def process(self, long_line, error):
"""Processes a log message from the build system"""
self.lock.acquire()
# look for a special marker in output
marker_index = long_line.find(self.log_prefix)
if marker_index != -1:
# sometimes multiple log lines are glued together
# for some reason, split it here
lines = long_line[marker_index:].split(self.log_prefix)
for line in lines:
if line[:len(self.log_print)] == self.log_print:
line = line[len(self.log_print):]
# print marker, print immediately
if self.log_file is not None:
self.log_file.write(line)
line = self.colorize(line, self.color.bold_cyan)
self.erase_pinned()
print(line, end = "")
self.print_pinned()
continue
line = line.strip()
if not line:
continue
# check if a done marker inserted
done = False
silent = False
if line[:len(self.log_done)] == self.log_done:
line = line[len(self.log_done):]
done = True
if line[:len(self.log_sdone)] == self.log_sdone:
line = line[len(self.log_sdone):]
done = True
silent = True
parsed = line.split(self.log_separator, 2)
if len(parsed) != 3:
# malformed message
continue
module, status, message = parsed
if not module:
# log stream corrupted? Assign to 'root' module
module = "root"
self.pinned.insert((module, status), (message, done))
if self.log_file is not None:
# put all messages to the log file as they go
if not silent:
self.log_file.write(f'{module}: {status} {message}\n')
else: # no markers
line = long_line
if error:
# put additional colors on error stream messages
if self.ansi_escape.search(line) is not None:
# if output is from clang or rustc and has colors already,
# keep it as is
pass
elif (pos := line.lower().find('error')) != -1:
line = self.colorize(line[:pos], self.color.bold) + \
self.colorize('error', self.color.bold_red) + \
self.colorize(line[pos + len('error'):],
self.color.bold)
elif (pos := line.lower().find('warning')) != -1:
line = self.colorize(line[:pos], self.color.bold) + \
self.colorize('warning', self.color.bold_magenta) + \
self.colorize(line[pos + len('warning'):],
self.color.bold)
else:
line = self.colorize(line, self.color.bold)
self.erase_pinned()
print(line, end = "")
self.print_pinned()
if self.log_file is not None:
# just print the message as is
# make sure no escape (color) characters go to the log file
line = self.ansi_escape.sub('', line)
self.log_file.write(line)
self.lock.release()
def refresh(self):
"""Reprints pinned messages"""
self.lock.acquire()
self.erase_pinned()
self.print_pinned()
self.lock.release()
def run(self):
try:
with open(self.stream, encoding="utf-8") as stream:
for line in stream:
if not line:
break
self.process(line, self.err)
except OSError as e:
if errno.EIO == e.errno:
# EIO also means EOF, maybe just the pipe is closed
# on the other side
pass
else:
raise
class LogEngine():
"""Log processing engine"""
class RepeatTimer(threading.Timer):
"""Thread for repeatedly refreshing pinned messages"""
def run(self):
while not self.finished.wait(self.interval):
self.function(*self.args, **self.kwargs)
def __init__(self, log_file, colored=True):
# a queue where all pinned log lines are stored
pinned = ModuleQueue()
# lock to sync output between threads (stdout and stderr)
lock = threading.Lock()
self.log_file = log_file
# create pty buffers to capture output from the subprocess
# this is necessary to keep clang and rustc colored output
master_err, self.stderr = pty.openpty()
master_out, self.stdout = pty.openpty()
self.outThread = LogProcessor(stream=master_out, err=False,
pinned=pinned, lock=lock, colored=colored, log_file=self.log_file)
self.errThread = LogProcessor(stream=master_err, err=True,
pinned=pinned, lock=lock, colored=colored, log_file=self.log_file)
self.refresher = self.RepeatTimer(0.1, self.outThread.refresh)
def __enter__(self):
# no pinned entries yet, but print it now to allocate space
self.outThread.print_pinned()
self.outThread.start()
self.errThread.start()
# launch a pinned messages refreshing task
self.refresher.start()
return self
def __exit__(self, exception_type, value, traceback):
# stop log processor and refresher threads
self.refresher.cancel()
# make sure the latest pinned messages are printed
self.outThread.refresh()
# close remaining pipe ports
os.close(self.stdout)
os.close(self.stderr)
self.outThread.join()
self.errThread.join()
|