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
|
GERRIT = "GERRIT:"
GERRIT_API = "GERRIT_API:"
MAVEN_CENTRAL = "MAVEN_CENTRAL:"
MAVEN_LOCAL = "MAVEN_LOCAL:"
ECLIPSE = "ECLIPSE:"
MAVEN_SNAPSHOT = "https://oss.sonatype.org/content/repositories/snapshots"
SNAPSHOT = "-SNAPSHOT-"
def _maven_release(ctx, parts):
"""induce jar and url name from maven coordinates."""
if len(parts) not in [3, 4]:
fail('%s:\nexpected id="groupId:artifactId:version[:classifier]"' %
ctx.attr.artifact)
if len(parts) == 4:
group, artifact, version, classifier = parts
file_version = version + "-" + classifier
else:
group, artifact, version = parts
file_version = version
repository = ctx.attr.repository
if "-SNAPSHOT-" in version:
start = version.index(SNAPSHOT)
end = start + len(SNAPSHOT) - 1
# file version without snapshot constant, but with post snapshot suffix
file_version = version[:start] + version[end:]
# version without post snapshot suffix
version = version[:end]
# overwrite the repository with Maven snapshot repository
repository = MAVEN_SNAPSHOT
jar = artifact.lower() + "-" + file_version
url = "/".join([
repository,
group.replace(".", "/"),
artifact,
version,
artifact + "-" + file_version,
])
return jar, url
# Creates a struct containing the different parts of an artifact's FQN
def _create_coordinates(fully_qualified_name):
parts = fully_qualified_name.split(":")
packaging = None
classifier = None
if len(parts) == 3:
group_id, artifact_id, version = parts
elif len(parts) == 4:
group_id, artifact_id, version, packaging = parts
elif len(parts) == 5:
group_id, artifact_id, version, packaging, classifier = parts
else:
fail("Invalid fully qualified name for artifact: %s" % fully_qualified_name)
return struct(
fully_qualified_name = fully_qualified_name,
group_id = group_id,
artifact_id = artifact_id,
packaging = packaging,
classifier = classifier,
version = version,
)
def _format_deps(attr, deps):
formatted_deps = ""
if deps:
if len(deps) == 1:
formatted_deps += "%s = [\'%s\']," % (attr, deps[0])
else:
formatted_deps += "%s = [\n" % attr
for dep in deps:
formatted_deps += " \'%s\',\n" % dep
formatted_deps += " ],"
return formatted_deps
def _generate_build_files(ctx, binjar, srcjar):
header = "# DO NOT EDIT: automatically generated BUILD file for maven_jar rule %s" % ctx.name
srcjar_attr = ""
if srcjar:
srcjar_attr = 'srcjar = "%s",' % srcjar
contents = """
{header}
load("@rules_java//java:defs.bzl", "java_import")
package(default_visibility = ['//visibility:public'])
java_import(
name = 'jar',
jars = ['{binjar}'],
{srcjar_attr}
{deps}
{exports}
)
java_import(
name = 'neverlink',
jars = ['{binjar}'],
neverlink = 1,
{deps}
{exports}
)
\n""".format(
srcjar_attr = srcjar_attr,
header = header,
binjar = binjar,
deps = _format_deps("deps", ctx.attr.deps),
exports = _format_deps("exports", ctx.attr.exports),
)
if srcjar:
contents += """
java_import(
name = 'src',
jars = ['{srcjar}'],
)
""".format(srcjar = srcjar)
ctx.file("%s/BUILD" % ctx.path("jar"), contents, False)
# Compatibility layer for java_import_external from rules_closure
contents = """
{header}
package(default_visibility = ['//visibility:public'])
alias(
name = "{rule_name}",
actual = "@{rule_name}//jar",
)
\n""".format(rule_name = ctx.name, header = header)
ctx.file("BUILD", contents, False)
def _maven_jar_impl(ctx):
"""rule to download a Maven archive."""
coordinates = _create_coordinates(ctx.attr.artifact)
name = ctx.name
sha1 = ctx.attr.sha1
parts = ctx.attr.artifact.split(":")
# TODO(davido): Only releases for now, implement handling snapshots
jar, url = _maven_release(ctx, parts)
binjar = jar + ".jar"
binjar_path = ctx.path("/".join(["jar", binjar]))
binurl = url + ".jar"
python = ctx.which("python3")
script = ctx.path(ctx.attr._download_script)
args = [python, script, "-o", binjar_path, "-u", binurl]
if ctx.attr.sha1:
args.extend(["-v", sha1])
for x in ctx.attr.exclude:
args.extend(["-x", x])
out = ctx.execute(args)
if out.return_code:
fail("failed %s: %s" % (args, out.stderr))
srcjar = None
if ctx.attr.src_sha1 or ctx.attr.attach_source:
srcjar = jar + "-src.jar"
srcurl = url + "-sources.jar"
srcjar_path = ctx.path("jar/" + srcjar)
args = [python, script, "-o", srcjar_path, "-u", srcurl]
if ctx.attr.src_sha1:
args.extend(["-v", ctx.attr.src_sha1])
out = ctx.execute(args)
if out.return_code:
fail("failed %s: %s" % (args, out.stderr))
_generate_build_files(ctx, binjar, srcjar)
maven_jar = repository_rule(
attrs = {
"artifact": attr.string(mandatory = True),
"attach_source": attr.bool(default = True),
"exclude": attr.string_list(),
"repository": attr.string(default = MAVEN_CENTRAL),
"sha1": attr.string(),
"src_sha1": attr.string(),
"exports": attr.string_list(),
"deps": attr.string_list(),
"_download_script": attr.label(default = Label("//tools:download_file.py")),
},
local = True,
implementation = _maven_jar_impl,
)
|