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//! # wasmCloud Host //! //! [wasmCloud](https://wasmcloud.com) is a secure, distributed actor platform with an autonomous mesh network built //! for bridging disparate and far-flung infrastructure. //! //! By default a wasmCloud host will start in offline mode and only allow "local" scheduling of actors //! and capabilities. If you choose to opt-in to the lattice, you can use NATS as a message broker to //! provide the infrastructure for wasmCloud's self-forming, self-healing network. If you then want //! even more power, you can choose to override the capability provider used for managing the shared //! state within a lattice. //! //! Local development on your workstation is easy and simple by default, and you should only //! incur additional complexity as you move toward resilient, distributed production //! environments. //! //! To start a runtime, simply add actors and capabilities to the host. For more information, //! take a look at the documentation and tutorials at [wasmcloud.dev](https://wasmcloud.dev). //! //! # Example //! The following example creates a new wasmCloud host in the default standalone (no lattice) mode. It //! then loads an actor that simply echoes back incoming HTTP requests as outbound HTTP responses. //! The HTTP server capability provider is loaded so that the actor can receive web requests. //! Note that the link definition (configuration of the link between the actor and the //! capability provider) can be defined _in any order_. The host runtime automatically //! establishes links as soon as all related parties are up and running inside a host or //! a lattice. //! //! ``` //! use wasmcloud_host::{HostBuilder, Actor, NativeCapability}; //! use std::collections::HashMap; //! use std::error::Error; //! use std::time::Duration; //! use actix_rt::time::delay_for; //! use reqwest; //! //! const WEB_PORT: u32 = 8080; //! //! #[actix_rt::main] //! async fn main() -> Result<(), Box<dyn Error + Sync +Send>> { //! let h = HostBuilder::new().build(); //! h.start().await?; //! let echo = Actor::from_file("../../tests/modules/echo.wasm")?; //! let actor_id = echo.public_key(); //! h.start_actor(echo).await?; //! //! // Read a cross-platform provider archive file //! let arc = par_from_file("../../tests/modules/httpserver.par.gz")?; //! let websrv = NativeCapability::from_archive(&arc, None)?; //! let websrv_id = websrv.id(); //! //! let mut webvalues: HashMap<String, String> = HashMap::new(); //! webvalues.insert("PORT".to_string(), format!("{}", WEB_PORT)); //! // Establish a link between the actor and a capability provider //! h.set_link( //! &actor_id, //! "wasmcloud:httpserver", //! None, //! websrv_id, //! webvalues, //! ) //! .await?; //! // Start the web server provider (which auto-establishes the link) //! h.start_native_capability(websrv).await?; //! // Let the web server start //! delay_for(Duration::from_millis(500)).await; //! let url = format!("http://localhost:{}/demo?test=kthxbye", WEB_PORT); //! //! let resp = reqwest::get(&url).await?; //! assert!(resp.status().is_success()); //! let v: serde_json::Value = serde_json::from_slice(&resp.bytes().await?)?; //! assert_eq!("test=kthxbye", v["query_string"].as_str().unwrap()); //! //! Ok(()) //! } //! //! # fn par_from_file(file: &str) -> Result<provider_archive::ProviderArchive, Box<dyn Error + Sync + Send>> { //! # use std::io::Read; //! # let mut f = std::fs::File::open(file)?; //! # let mut buf = Vec::new(); //! # f.read_to_end(&mut buf)?; //! # provider_archive::ProviderArchive::try_load(&buf) //! # } //! //! ``` //! mod actors; mod auth; mod capability; mod control_interface; mod dispatch; mod errors; mod generated; mod hlreg; mod host; mod host_controller; mod manifest; mod messagebus; mod middleware; mod oci; #[macro_use] extern crate log; pub use crate::control_interface::events::{ControlEvent, EventHeader, PublishedEvent}; pub use actors::WasmCloudActor; pub use auth::{Authorizer, CloneAuthorizer}; pub use capability::native::NativeCapability; pub use dispatch::{Invocation, InvocationResponse, WasmCloudEntity}; pub use host::{Host, HostBuilder}; pub use manifest::HostManifest; /// Result type used for function calls within this library pub type Result<T> = ::std::result::Result<T, Box<dyn ::std::error::Error + Send + Sync>>; /// Type alias used to disambiguate between wasmCloud actors and Actix actors pub type Actor = WasmCloudActor; #[doc(hidden)] pub const SYSTEM_ACTOR: &str = "system";