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
|
#!/usr/bin/env python2
#
# Copyright (c) 2016,2018 Cisco and/or its affiliates.
# 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.
#
from string import Template
from jni_impl_gen import generate_jni_impl
from jni_msg_handlers_gen import generate_jni_handlers
from jni_type_handlers_gen import generate_type_handlers
from jvpp_model import is_control_ping, is_dump, is_request, is_control_ping_reply
def generate_jni(work_dir, model, logger):
logger.debug("Generating jvpp C for %s" % model.json_api_files)
plugin_name = model.plugin_name
messages = model.messages
with open("%s/jvpp_%s_gen.h" % (work_dir, plugin_name), "w") as f:
f.write(_JVPP_C_TEMPLATE.substitute(
json_filename=model.json_api_files,
class_cache=_generate_class_cache(plugin_name, messages),
api_verification=_generate_api_verification(messages),
type_handlers=generate_type_handlers(model, logger),
jni_implementations=generate_jni_impl(model),
msg_handlers=generate_jni_handlers(model),
handler_registration=_generate_handler_registration(messages)))
_JVPP_C_TEMPLATE = Template("""/**
* This file contains JNI bindings for jvpp Java API.
* It was generated by jvpp_jni_gen.py based on $json_filename.
*/
$class_cache
$api_verification
// Type handlers
$type_handlers
// JNI bindings
$jni_implementations
// Message handlers
$msg_handlers
$handler_registration
""")
def _generate_class_cache(plugin_name, messages):
references = []
for msg in messages:
if is_control_ping(msg) or is_control_ping_reply(msg):
# Skip control_ping managed by jvpp registry.
continue
references.append((
msg.java_name_lower,
'io/fd/vpp/jvpp/%s/dto/%s' % (plugin_name, msg.java_name_upper)
))
references.append(('callbackException', 'io/fd/vpp/jvpp/VppCallbackException'))
return _CLASS_CACHE_TEMPLATE.substitute(
class_references=_generate_class_references(references),
create_references=_generate_create_references(references),
delete_references=_generate_delete_references(references)
)
_CLASS_CACHE_TEMPLATE = Template("""
// JAVA class reference cache
$class_references
static int cache_class_references(JNIEnv* env) {
$create_references
return 0;
}
static void delete_class_references(JNIEnv* env) {
$delete_references
}""")
def _generate_class_references(references):
return "\n".join("jclass %sClass;" % r[0] for r in references)
def _generate_create_references(references):
items = []
for r in references:
items.append(_CREATE_GLOBAL_REF_TEMPLATE.substitute(
ref_name=r[0],
fqn_name=r[1]
))
return "".join(items)
_CREATE_GLOBAL_REF_TEMPLATE = Template("""
${ref_name}Class = (jclass)(*env)->NewGlobalRef(env, (*env)->FindClass(env, "${fqn_name}"));
if ((*env)->ExceptionCheck(env)) {
(*env)->ExceptionDescribe(env);
return JNI_ERR;
}""")
def _generate_delete_references(references):
items = []
for r in references:
items.append(_DELETE_CLASS_INVOCATION_TEMPLATE.substitute(ref_name=r[0]))
return "".join(items)
_DELETE_CLASS_INVOCATION_TEMPLATE = Template("""
if (${ref_name}Class) {
(*env)->DeleteGlobalRef(env, ${ref_name}Class);
}""")
def _generate_api_verification(messages):
items = []
for msg in messages:
items.append("_(%s_%s) \\" % (msg.name, msg.crc))
return _API_VERIFICATION_TEMPLATE.substitute(messages="\n".join(items))
_API_VERIFICATION_TEMPLATE = Template("""
// List of supported API messages used for verification
#define foreach_supported_api_message \\
$messages
""")
def _generate_handler_registration(messages):
"""
Generates msg handler registration for all messages except for dumps and requests.
:param messages: collection of VPP API messages.
"""
handlers = []
for msg in messages:
if is_control_ping(msg) or is_control_ping_reply(msg):
# Skip control_ping managed by jvpp registry.
continue
if is_dump(msg) or is_request(msg):
continue
name = msg.name
crc = msg.crc
handlers.append("_(%s_%s, %s) \\" % (name, crc, name))
return _HANDLER_REGISTRATION_TEMPLATE.substitute(handlers="\n".join(handlers))
_HANDLER_REGISTRATION_TEMPLATE = Template("""
// Registration of message handlers in vlib
#define foreach_api_reply_handler \\
$handlers
""")
|
