|
1
|
|
|
#!/usr/bin/env python3 |
|
2
|
|
|
|
|
3
|
|
|
# -*- coding: utf-8 -*- |
|
4
|
|
|
|
|
5
|
|
|
# NAME |
|
6
|
|
|
|
|
7
|
|
|
# inji - Render jina2 templates to stdout |
|
8
|
|
|
|
|
9
|
|
|
import argparse |
|
10
|
|
|
import atexit |
|
11
|
|
|
import fnmatch |
|
12
|
|
|
import json |
|
13
|
|
|
import locale |
|
14
|
|
|
import os |
|
15
|
|
|
from setproctitle import setproctitle |
|
16
|
|
|
import shutil |
|
17
|
|
|
import signal |
|
18
|
|
|
import sys |
|
19
|
|
|
import tempfile |
|
20
|
|
|
|
|
21
|
|
|
from .engine import TemplateEngine |
|
22
|
|
|
from . import utils |
|
23
|
|
|
|
|
24
|
|
|
def cli_args(): |
|
25
|
|
|
parser = argparse.ArgumentParser( |
|
26
|
|
|
description='inji - render jinja templates' |
|
27
|
|
|
) |
|
28
|
|
|
required = parser.add_argument_group('required arguments') |
|
29
|
|
|
|
|
30
|
|
|
required.add_argument('-t', '-f', '--template', |
|
31
|
|
|
action = 'store', required=False, type=utils.file_or_stdin, |
|
32
|
|
|
dest='template', default='-', |
|
33
|
|
|
help='/path/to/template.j2 (defaults to -)' |
|
34
|
|
|
) |
|
35
|
|
|
|
|
36
|
|
|
parser.add_argument('-j', '--json-config', '-c', |
|
37
|
|
|
action = 'store', required=False, |
|
38
|
|
|
type=lambda x: utils.json_parse(x), |
|
39
|
|
|
dest='json_string', |
|
40
|
|
|
help="-c '{ \"foo\": \"bar\", \"fred\": \"wilma\" }'" |
|
41
|
|
|
) |
|
42
|
|
|
|
|
43
|
|
|
parser.add_argument('-k', '--kv-config', '-d', |
|
44
|
|
|
action = 'store', required=False, |
|
45
|
|
|
type=lambda x: utils.kv_parse(x), |
|
46
|
|
|
dest='kv_pair', |
|
47
|
|
|
help='-d foo=bar -d fred=wilma' |
|
48
|
|
|
) |
|
49
|
|
|
|
|
50
|
|
|
parser.add_argument('-o', '--overlay-dir', |
|
51
|
|
|
action = 'append', required=False, type=lambda p, t='dir': utils.path(p, t), |
|
52
|
|
|
dest='overlay_dir', default=[], |
|
53
|
|
|
help='/path/to/overlay/' |
|
54
|
|
|
) |
|
55
|
|
|
|
|
56
|
|
|
parser.add_argument('-v', '-p', '--vars-file', '--vars', |
|
57
|
|
|
action = 'append', required=False, type=lambda p, t='file': utils.path(p, t), |
|
58
|
|
|
dest='vars_file', default=[], |
|
59
|
|
|
help='/path/to/vars.yaml' |
|
60
|
|
|
) |
|
61
|
|
|
|
|
62
|
|
|
parser.add_argument('--strict-mode', '-s', |
|
63
|
|
|
action = 'store', required=False, type=str, |
|
64
|
|
|
dest='undefined_variables_mode', default='strict', |
|
65
|
|
|
choices=[ 'strict', 'empty', 'keep', |
|
66
|
|
|
'StrictUndefined', 'Undefined', 'DebugUndefined' ], |
|
67
|
|
|
help='Refer to http://jinja.pocoo.org/docs/2.10/api/#undefined-types' |
|
68
|
|
|
) |
|
69
|
|
|
|
|
70
|
|
|
return parser.parse_args() |
|
71
|
|
|
|
|
72
|
|
|
|
|
73
|
|
|
def sigint_handler(signum, frame): # pragma: no cover # despite being covered |
|
74
|
|
|
""" Handle SIGINT, ctrl-c gracefully """ |
|
75
|
|
|
signal.signal(signum, signal.SIG_IGN) # ignore subsequent ctrl-c's |
|
76
|
|
|
sys.exit( 128 + signal.SIGINT ) # 130 by convention |
|
77
|
|
|
|
|
78
|
|
|
def main(): |
|
79
|
|
|
""" Our main method """ |
|
80
|
|
|
|
|
81
|
|
|
# cleanly handle ctrl-c's |
|
82
|
|
|
signal.signal(signal.SIGINT, sigint_handler) |
|
83
|
|
|
|
|
84
|
|
|
# set process name |
|
85
|
|
|
setproctitle('inji') |
|
86
|
|
|
|
|
87
|
|
|
args = cli_args() |
|
88
|
|
|
|
|
89
|
|
|
# this holds all the possible vars files we are told about or imply |
|
90
|
|
|
vars_files = [] |
|
91
|
|
|
|
|
92
|
|
|
# context in the local configuration files - p5 |
|
93
|
|
|
vars_files += fnmatch.filter(os.listdir('.'), "*inji.y*ml") |
|
94
|
|
|
|
|
95
|
|
|
# context in the overlay directories - p4 |
|
96
|
|
|
for d in args.overlay_dir: |
|
97
|
|
|
files = list(utils.recursive_iglob(d, '*.y*ml')) |
|
98
|
|
|
if len(files): |
|
99
|
|
|
loc = locale.getlocale() |
|
100
|
|
|
locale.setlocale(locale.LC_ALL, 'C') # Using LC_ALL=C POSIX locale |
|
101
|
|
|
files.sort() # We force the sort collation of files |
|
102
|
|
|
locale.setlocale(locale.LC_ALL, loc) # And then reset it back |
|
103
|
|
|
vars_files += files |
|
104
|
|
|
|
|
105
|
|
|
# context from named vars files - p3 |
|
106
|
|
|
vars_files += args.vars_file |
|
107
|
|
|
|
|
108
|
|
|
# This will hold the final vars dict merged from various available sources |
|
109
|
|
|
context = {} |
|
110
|
|
|
for file in vars_files: |
|
111
|
|
|
context.update(utils.read_context(file)) |
|
112
|
|
|
|
|
113
|
|
|
# context from environment variables - p2 |
|
114
|
|
|
context.update(os.environ) |
|
115
|
|
|
|
|
116
|
|
|
# context at the command line (either JSON or KV type) - p1 |
|
117
|
|
|
if args.json_string: |
|
118
|
|
|
context.update(args.json_string) |
|
119
|
|
|
|
|
120
|
|
|
if args.kv_pair: |
|
121
|
|
|
context.update(args.kv_pair) |
|
122
|
|
|
|
|
123
|
|
|
if args.template == '-': |
|
124
|
|
|
# Template passed in via stdin. Create template as a tempfile and use it |
|
125
|
|
|
# instead but since includes are possible (though not likely), we have to do |
|
126
|
|
|
# this in an isolated tmpdir container to prevent inadvertent reading of |
|
127
|
|
|
# includes not meant to be read. |
|
128
|
|
|
tmpdir = tempfile.mkdtemp() |
|
129
|
|
|
atexit.register(shutil.rmtree, tmpdir) |
|
130
|
|
|
|
|
131
|
|
|
_, tmpfile = tempfile.mkstemp(prefix='stdin-', dir=tmpdir, text=True) |
|
132
|
|
|
atexit.register(os.remove, tmpfile) |
|
133
|
|
|
|
|
134
|
|
|
with open(tmpfile, "a+") as f: |
|
135
|
|
|
f.write(sys.stdin.read()) |
|
136
|
|
|
args.template = tmpfile |
|
137
|
|
|
|
|
138
|
|
|
engine = TemplateEngine( undefined_variables_mode_behaviour=args.undefined_variables_mode ) |
|
139
|
|
|
for block in engine.render( template=args.template, |
|
140
|
|
|
context=context, |
|
141
|
|
|
): |
|
142
|
|
|
print(block) |
|
143
|
|
|
|
shalomb /
inji
