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
use crate::Result;
use crate::config::AppServiceConfig;
use crate::MemoryStats;
use crate::service_interface::ServiceInterface;
use super::AppServiceError;
use marine::Marine;
use marine::IValue;
use serde_json::Value as JValue;
use std::convert::TryInto;
use std::collections::HashMap;
use std::collections::HashSet;
use std::path::PathBuf;
use std::io::ErrorKind;
const SERVICE_ID_ENV_NAME: &str = "service_id";
const SERVICE_LOCAL_DIR_NAME: &str = "local";
const SERVICE_TMP_DIR_NAME: &str = "tmp";
pub struct AppService {
marine: Marine,
facade_module_name: String,
}
impl AppService {
pub fn new<C, S>(config: C, service_id: S, envs: HashMap<Vec<u8>, Vec<u8>>) -> Result<Self>
where
S: Into<String>,
C: TryInto<AppServiceConfig>,
AppServiceError: From<C::Error>,
{
let mut config: AppServiceConfig = config.try_into()?;
let facade_module_name = config
.marine_config
.modules_config
.last()
.ok_or_else(|| {
AppServiceError::ConfigParseError(String::from(
"config should contain at least one module",
))
})?
.import_name
.clone();
let service_id = service_id.into();
Self::set_env_and_dirs(&mut config, service_id, envs)?;
let marine = Marine::with_raw_config(config.marine_config)?;
Ok(Self {
marine,
facade_module_name,
})
}
pub fn call(
&mut self,
func_name: impl AsRef<str>,
arguments: JValue,
call_parameters: crate::CallParameters,
) -> Result<JValue> {
self.marine
.call_with_json(
&self.facade_module_name,
func_name,
arguments,
call_parameters,
)
.map_err(Into::into)
}
pub fn call_with_ivalues(
&mut self,
func_name: impl AsRef<str>,
arguments: &[IValue],
call_parameters: crate::CallParameters,
) -> Result<Vec<IValue>> {
self.marine
.call_with_ivalues(
&self.facade_module_name,
func_name,
arguments,
call_parameters,
)
.map_err(Into::into)
}
pub fn get_interface(&self) -> ServiceInterface {
use crate::service_interface::into_service_interface;
let marine_facade_interface = self
.marine
.get_interface()
.modules
.remove(self.facade_module_name.as_str())
.unwrap();
into_service_interface(marine_facade_interface)
}
fn set_env_and_dirs(
config: &mut AppServiceConfig,
service_id: String,
mut envs: HashMap<Vec<u8>, Vec<u8>>,
) -> Result<()> {
use maplit::hashmap;
let create = |dir: &PathBuf| match std::fs::create_dir(dir) {
Err(e) if e.kind() == ErrorKind::AlreadyExists => Ok(()),
Err(err) => Err(AppServiceError::CreateDir {
err,
path: dir.clone(),
}),
_ => Ok(()),
};
let base_dir = &config.service_base_dir;
let service_dir = base_dir.join(&service_id);
create(&service_dir)?;
let local_dir = service_dir.join(SERVICE_LOCAL_DIR_NAME);
create(&local_dir)?;
let tmp_dir = service_dir.join(SERVICE_TMP_DIR_NAME);
create(&tmp_dir)?;
let local_dir = local_dir.to_string_lossy().to_string();
let tmp_dir = tmp_dir.to_string_lossy().to_string();
let mut preopened_files = HashSet::new();
preopened_files.insert(PathBuf::from(local_dir.clone()));
preopened_files.insert(PathBuf::from(tmp_dir.clone()));
let mapped_dirs = hashmap! {
String::from(SERVICE_LOCAL_DIR_NAME) => PathBuf::from(local_dir),
String::from(SERVICE_TMP_DIR_NAME) => PathBuf::from(tmp_dir),
};
envs.insert(
SERVICE_ID_ENV_NAME.as_bytes().to_vec(),
service_id.into_bytes(),
);
for module in &mut config.marine_config.modules_config {
module.config.extend_wasi_envs(envs.clone());
module
.config
.extend_wasi_files(preopened_files.clone(), mapped_dirs.clone());
}
Ok(())
}
pub fn module_memory_stats(&self) -> MemoryStats<'_> {
self.marine.module_memory_stats()
}
}
#[cfg(feature = "raw-module-api")]
impl AppService {
pub fn new_with_empty_facade<C, S>(
config: C,
service_id: S,
envs: HashMap<Vec<u8>, Vec<u8>>,
) -> Result<Self>
where
S: Into<String>,
C: TryInto<AppServiceConfig>,
AppServiceError: From<C::Error>,
{
let mut config: AppServiceConfig = config.try_into()?;
let service_id = service_id.into();
Self::set_env_and_dirs(&mut config, service_id, envs)?;
let marine = Marine::with_raw_config(config.marine_config)?;
Ok(Self {
marine,
facade_module_name: String::new(),
})
}
pub fn call_module(
&mut self,
module_name: impl AsRef<str>,
func_name: impl AsRef<str>,
arguments: JValue,
call_parameters: crate::CallParameters,
) -> Result<JValue> {
self.marine
.call_with_json(module_name, func_name, arguments, call_parameters)
.map_err(Into::into)
}
pub fn load_module<C, S>(&mut self, name: S, wasm_bytes: &[u8], config: Option<C>) -> Result<()>
where
S: Into<String>,
C: TryInto<crate::MarineModuleConfig>,
marine::MarineError: From<C::Error>,
{
self.marine
.load_module(name, wasm_bytes, config)
.map_err(Into::into)
}
pub fn unload_module(&mut self, module_name: impl AsRef<str>) -> Result<()> {
self.marine.unload_module(module_name).map_err(Into::into)
}
pub fn get_full_interface(&self) -> marine::MarineInterface<'_> {
self.marine.get_interface()
}
pub fn get_wasi_state(
&mut self,
module_name: impl AsRef<str>,
) -> Result<&wasmer_wasi::state::WasiState> {
self.marine
.module_wasi_state(module_name)
.map_err(Into::into)
}
}