Struct wasmer_wasi::WasiState

pub struct WasiState {
    pub fs: WasiFs,
    pub args: Vec<Vec<u8>>,
    pub envs: Vec<Vec<u8>>,
}

Top level data type containing all* the state with which WASI can interact.

• The contents of files are not stored and may be modified by other, concurrently running programs. Data such as the contents of directories are lazily loaded.

Usage:

WasiState::new("program_name")
   .env(b"HOME", "/home/home".to_string())
   .arg("--help")
   .envs({
       let mut hm = std::collections::HashMap::new();
       hm.insert("COLOR_OUTPUT", "TRUE");
       hm.insert("PATH", "/usr/bin");
       hm
   })
   .args(&["--verbose", "list"])
   .preopen(|p| p.directory("src").read(true).write(true).create(true))?
   .preopen(|p| p.directory(".").alias("dot").read(true))?
   .build()?;

Fields

fs: WasiFs

args: Vec<Vec<u8>>

envs: Vec<Vec<u8>>

Implementations

impl WasiState

pub fn new(program_name: impl AsRef<str>) -> WasiStateBuilder

Create a WasiStateBuilder to construct a validated instance of WasiState.

pub fn freeze(&self) -> Option<Vec<u8>>

Turn the WasiState into bytes

pub fn unfreeze(bytes: &[u8]) -> Option<Self>

Get a WasiState from bytes

Trait Implementations

impl Debug for WasiState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WasiState

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Serialize for WasiState

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.