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
|
#!/usr/bin/env python3
"""Combine logs from multiple bitcoin nodes as well as the test_framework log.
This streams the combined log output to stdout. Use combine_logs.py > outputfile
to write to an outputfile.
If no argument is provided, the most recent test directory will be used."""
import argparse
from collections import defaultdict, namedtuple
import glob
import heapq
import itertools
import os
import pathlib
import re
import sys
import tempfile
# N.B.: don't import any local modules here - this script must remain executable
# without the parent module installed.
# Should match same symbol in `test_framework.test_framework`.
TMPDIR_PREFIX = "bitcoin_func_test_"
# Matches on the date format at the start of the log event
TIMESTAMP_PATTERN = re.compile(r"^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{6})?Z")
LogEvent = namedtuple('LogEvent', ['timestamp', 'source', 'event'])
def main():
"""Main function. Parses args, reads the log files and renders them as text or html."""
parser = argparse.ArgumentParser(
description=__doc__, formatter_class=argparse.RawTextHelpFormatter)
parser.add_argument(
'testdir', nargs='?', default='',
help=('temporary test directory to combine logs from. '
'Defaults to the most recent'))
parser.add_argument('-c', '--color', dest='color', action='store_true', help='outputs the combined log with events colored by source (requires posix terminal colors. Use less -r for viewing)')
parser.add_argument('--html', dest='html', action='store_true', help='outputs the combined log as html. Requires jinja2. pip install jinja2')
args = parser.parse_args()
if args.html and args.color:
print("Only one out of --color or --html should be specified")
sys.exit(1)
testdir = args.testdir or find_latest_test_dir()
if not testdir:
print("No test directories found")
sys.exit(1)
if not args.testdir:
print("Opening latest test directory: {}".format(testdir), file=sys.stderr)
colors = defaultdict(lambda: '')
if args.color:
colors["test"] = "\033[0;36m" # CYAN
colors["node0"] = "\033[0;34m" # BLUE
colors["node1"] = "\033[0;32m" # GREEN
colors["node2"] = "\033[0;31m" # RED
colors["node3"] = "\033[0;33m" # YELLOW
colors["reset"] = "\033[0m" # Reset font color
log_events = read_logs(testdir)
if args.html:
print_logs_html(log_events)
else:
print_logs_plain(log_events, colors)
print_node_warnings(testdir, colors)
def read_logs(tmp_dir):
"""Reads log files.
Delegates to generator function get_log_events() to provide individual log events
for each of the input log files."""
# Find out what the folder is called that holds the debug.log file
chain = glob.glob("{}/node0/*/debug.log".format(tmp_dir))
if chain:
chain = chain[0] # pick the first one if more than one chain was found (should never happen)
chain = re.search('node0/(.+?)/debug\.log$', chain).group(1) # extract the chain name
else:
chain = 'regtest' # fallback to regtest (should only happen when none exists)
files = [("test", "%s/test_framework.log" % tmp_dir)]
for i in itertools.count():
logfile = "{}/node{}/{}/debug.log".format(tmp_dir, i, chain)
if not os.path.isfile(logfile):
break
files.append(("node%d" % i, logfile))
return heapq.merge(*[get_log_events(source, f) for source, f in files])
def print_node_warnings(tmp_dir, colors):
"""Print nodes' errors and warnings"""
warnings = []
for stream in ['stdout', 'stderr']:
for i in itertools.count():
folder = "{}/node{}/{}".format(tmp_dir, i, stream)
if not os.path.isdir(folder):
break
for (_, _, fns) in os.walk(folder):
for fn in fns:
warning = pathlib.Path('{}/{}'.format(folder, fn)).read_text().strip()
if warning:
warnings.append(("node{} {}".format(i, stream), warning))
print()
for w in warnings:
print("{} {} {} {}".format(colors[w[0].split()[0]], w[0], w[1], colors["reset"]))
def find_latest_test_dir():
"""Returns the latest tmpfile test directory prefix."""
tmpdir = tempfile.gettempdir()
def join_tmp(basename):
return os.path.join(tmpdir, basename)
def is_valid_test_tmpdir(basename):
fullpath = join_tmp(basename)
return (
os.path.isdir(fullpath)
and basename.startswith(TMPDIR_PREFIX)
and os.access(fullpath, os.R_OK)
)
testdir_paths = [
join_tmp(name) for name in os.listdir(tmpdir) if is_valid_test_tmpdir(name)
]
return max(testdir_paths, key=os.path.getmtime) if testdir_paths else None
def get_log_events(source, logfile):
"""Generator function that returns individual log events.
Log events may be split over multiple lines. We use the timestamp
regex match as the marker for a new log event."""
try:
with open(logfile, 'r', encoding='utf-8') as infile:
event = ''
timestamp = ''
for line in infile:
# skip blank lines
if line == '\n':
continue
# if this line has a timestamp, it's the start of a new log event.
time_match = TIMESTAMP_PATTERN.match(line)
if time_match:
if event:
yield LogEvent(timestamp=timestamp, source=source, event=event.rstrip())
timestamp = time_match.group()
if time_match.group(1) is None:
# timestamp does not have microseconds. Add zeroes.
timestamp_micro = timestamp.replace("Z", ".000000Z")
line = line.replace(timestamp, timestamp_micro)
timestamp = timestamp_micro
event = line
# if it doesn't have a timestamp, it's a continuation line of the previous log.
else:
# Add the line. Prefix with space equivalent to the source + timestamp so log lines are aligned
event += " " + line
# Flush the final event
yield LogEvent(timestamp=timestamp, source=source, event=event.rstrip())
except FileNotFoundError:
print("File %s could not be opened. Continuing without it." % logfile, file=sys.stderr)
def print_logs_plain(log_events, colors):
"""Renders the iterator of log events into text."""
for event in log_events:
lines = event.event.splitlines()
print("{0} {1: <5} {2} {3}".format(colors[event.source.rstrip()], event.source, lines[0], colors["reset"]))
if len(lines) > 1:
for line in lines[1:]:
print("{0}{1}{2}".format(colors[event.source.rstrip()], line, colors["reset"]))
def print_logs_html(log_events):
"""Renders the iterator of log events into html."""
try:
import jinja2
except ImportError:
print("jinja2 not found. Try `pip install jinja2`")
sys.exit(1)
print(jinja2.Environment(loader=jinja2.FileSystemLoader('./'))
.get_template('combined_log_template.html')
.render(title="Combined Logs from testcase", log_events=[event._asdict() for event in log_events]))
if __name__ == '__main__':
main()
|
