mirror of
https://github.com/fluencelabs/marine.git
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119 lines
3.6 KiB
Rust
119 lines
3.6 KiB
Rust
/*
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* Copyright 2020 Fluence Labs Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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use super::IValue;
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use super::IType;
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use crate::HostImportError;
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use wasmer_wasi::WasiVersion;
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use wasmer_runtime::ImportObject;
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use wasmer_core::vm::Ctx;
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use std::path::PathBuf;
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use std::collections::HashMap;
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use std::collections::HashSet;
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pub type HostExportedFunc = Box<dyn Fn(&mut Ctx, Vec<IValue>) -> Option<IValue> + 'static>;
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pub struct HostImportDescriptor {
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/// This closure will be invoked for corresponding import.
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pub host_exported_func: HostExportedFunc,
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/// Type of the closure arguments.
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pub argument_types: Vec<IType>,
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/// Types of output of the closure.
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pub output_type: Option<IType>,
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/// If Some, this closure is called with error when errors is encountered while lifting.
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/// If None, panic will occur.
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pub error_handler: Option<Box<dyn Fn(&HostImportError) -> Option<IValue> + 'static>>,
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}
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pub struct FCEModuleConfig {
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/// Maximum number of Wasm memory pages that loaded module can use.
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/// Each Wasm pages is 65536 bytes long.
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pub mem_pages_count: u32,
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/// Import object that will be used in module instantiation process.
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pub raw_imports: ImportObject,
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/// Imports from the host side that will be used in module instantiation process.
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pub host_imports: HashMap<String, HostImportDescriptor>,
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/// Desired WASI version.
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pub wasi_version: WasiVersion,
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/// Environment variables for loaded modules.
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pub wasi_envs: HashMap<Vec<u8>, Vec<u8>>,
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/// List of available directories for loaded modules.
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pub wasi_preopened_files: HashSet<PathBuf>,
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/// Mapping between paths.
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pub wasi_mapped_dirs: HashMap<String, PathBuf>,
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}
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impl Default for FCEModuleConfig {
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fn default() -> Self {
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// some reasonable defaults
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Self {
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// 65536*1600 ~ 100 Mb
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mem_pages_count: 1600,
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raw_imports: ImportObject::new(),
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host_imports: HashMap::new(),
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wasi_version: WasiVersion::Latest,
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wasi_envs: HashMap::new(),
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wasi_preopened_files: HashSet::new(),
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wasi_mapped_dirs: HashMap::new(),
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}
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}
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}
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// TODO: implement debug for FCEModuleConfig
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impl FCEModuleConfig {
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#[allow(dead_code)]
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pub fn with_mem_pages_count(mut self, mem_pages_count: u32) -> Self {
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self.mem_pages_count = mem_pages_count;
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self
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}
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#[allow(dead_code)]
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pub fn with_wasi_version(mut self, wasi_version: WasiVersion) -> Self {
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self.wasi_version = wasi_version;
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self
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}
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#[allow(dead_code)]
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pub fn with_wasi_envs(mut self, envs: HashMap<Vec<u8>, Vec<u8>>) -> Self {
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self.wasi_envs = envs;
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self
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}
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#[allow(dead_code)]
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pub fn with_wasi_preopened_files(mut self, preopened_files: HashSet<PathBuf>) -> Self {
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self.wasi_preopened_files = preopened_files;
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self
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}
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#[allow(dead_code)]
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pub fn with_wasi_mapped_dirs(mut self, mapped_dirs: HashMap<String, PathBuf>) -> Self {
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self.wasi_mapped_dirs = mapped_dirs;
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self
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}
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}
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