introduce ipfs service

Cargo.lock

@@ -514,10 +514,9 @@ dependencies = [
 [[package]]
 name = "ipfs_node"
 version = "0.1.0"
-
-[[package]]
-name = "ipfs_rpc"
-version = "0.1.0"
+dependencies = [
+ "fce",
+]
 
 [[package]]
 name = "lazy_static"
@@ -1035,6 +1034,14 @@ version = "0.9.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
+[[package]]
+name = "wasm_ipfs_node"
+version = "0.1.0"
+
+[[package]]
+name = "wasm_ipfs_rpc"
+version = "0.1.0"
+
 [[package]]
 name = "wasmer-clif-backend"
 version = "0.17.0"

Cargo.toml

@@ -1,9 +1,10 @@
 [workspace]
 members = [
     "crates/fce_wit_interfaces",
-    "examples/export_test",
     "examples/ipfs_node",
-    "examples/ipfs_rpc",
+    "examples/ipfs_node/wasm/ipfs_node",
+    "examples/ipfs_node/wasm/ipfs_rpc",
+    "examples/simple_greeting",
     "fce",
     "tools/wit_embedder",
 ]

examples/ipfs_node/Cargo.toml

@@ -4,7 +4,5 @@ version = "0.1.0"
 authors = ["Fluence Labs"]
 edition = "2018"
 
-[lib]
-name = "ipfs_node"
-path = "src/lib.rs"
-crate-type = ["cdylib"]
+[dependencies]
+fce = { path = "../../fce" }

examples/ipfs_node/src/errors.rs

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2020 Fluence Labs Limited
+ *
+ * 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.
+ */
+
+use fce::FCEError;
+
+use std::io::{Error as IOError, IoSliceMut};
+use std::error::Error;
+
+#[derive(Debug)]
+pub enum NodeError {
+    /// Various errors related to file io.
+    IOError(IOError),
+
+    /// WIT doesn't contain such type.
+    WasmProcessError(FCEError),
+}
+
+impl Error for NodeError {}
+
+impl std::fmt::Display for NodeError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
+        match self {
+            NodeError::IOError(err) => write!(f, "{}", err),
+            NodeError::WasmProcessError(err) => write!(f, "{}", err),
+        }
+    }
+}
+
+impl From<IOError> for NodeError {
+    fn from(err: IOError) -> Self {
+        NodeError::IOError(err)
+    }
+}
+
+impl From<FCEError> for NodeError {
+    fn from(err: FCEError) -> Self {
+        NodeError::WasmProcessError(err)
+    }
+}

examples/ipfs_node/src/lib.rs

@@ -14,56 +14,62 @@
  * limitations under the License.
  */
 
-#![allow(clippy::missing_safety_doc)]
+mod node;
+mod errors;
 
-mod mem;
-mod result;
+use fce::IValue;
+use fce::FCE;
+use fce::FCEError;
+use fce::FCEModuleConfig;
+use fce::WasmProcess;
 
-use crate::result::{RESULT_PTR, RESULT_SIZE};
+const IPFS_NODE: &str =
+    "/Users/mike/dev/work/fluence/wasm/fce/target/wasm32-unknown-unknown/release/ipfs_node_wit.wasm";
 
-#[no_mangle]
-pub unsafe fn put(file_content_ptr: *mut u8, file_content_size: usize) {
-    let file_content =
-        String::from_raw_parts(file_content_ptr, file_content_size, file_content_size);
+const IPFS_RPC: &str =
+    "/Users/mike/dev/work/fluence/wasm/fce/target/wasm32-unknown-unknown/release/ipfs_rpc_wit.wasm";
 
-    let msg = format!("from Wasm node: file content is {}\n", file_content);
-    log_utf8_string(msg.as_ptr() as _, msg.len() as _);
+fn main() {
+    let ipfs_node_bytes = std::fs::read(IPFS_NODE).unwrap();
+    let ipfs_rpc_bytes = std::fs::read(IPFS_RPC).unwrap();
 
-    let cmd = format!("put {}", file_content);
-    ipfs(cmd.as_ptr() as _, cmd.len() as _);
+    let mut fce = FCE::new();
+    let config = FCEModuleConfig::default();
 
-    let result = "Hello from IPFS node, take your hash".to_string();
+    println!("loading ipfs node module");
+    fce.load_module("node", &ipfs_node_bytes, config.clone())
+        .expect("module successfully created");
 
-    *RESULT_PTR.get_mut() = result.as_ptr() as _;
-    *RESULT_SIZE.get_mut() = result.len();
-    std::mem::forget(result);
+    println!("loading ipfs rpc module");
+    fce.load_module("rpc", &ipfs_rpc_bytes, config.clone())
+        .expect("module successfully created");
+
+    let result = fce
+        .call("node_rpc", "invoke", &[IValue::String("aaaa".to_string())])
+        .unwrap();
+
+    println!("execution result {:?}", result);
 }
 
-#[no_mangle]
-pub unsafe fn get(hash_ptr: *mut u8, hash_size: usize) {
-    let hash = String::from_raw_parts(hash_ptr, hash_size, hash_size);
+/*
+fn logger_log_utf8_string(ctx: &mut Ctx, offset: i32, size: i32) {
+    use wasmer_runtime_core::memory::ptr::{Array, WasmPtr};
 
-    let msg = format!("from Wasm node: file content is {}\n", hash);
-    log_utf8_string(msg.as_ptr() as _, msg.len() as _);
-
-    let cmd = format!("get {}", hash);
-    ipfs(cmd.as_ptr() as _, cmd.len() as _);
-
-    let result = "Hello from IPFS node, take your file".to_string();
-
-    *RESULT_PTR.get_mut() = result.as_ptr() as _;
-    *RESULT_SIZE.get_mut() = result.len();
-    std::mem::forget(result);
+    let wasm_ptr = WasmPtr::<u8, Array>::new(offset as _);
+    match wasm_ptr.get_utf8_string(ctx.memory(0), size as _) {
+        Some(msg) => print!("{}", msg),
+        None => print!("fce logger: incorrect UTF8 string's been supplied to logger"),
+    }
 }
 
-#[link(wasm_import_module = "logger")]
-extern "C" {
-    /// Writes a byte string of size bytes that starts from ptr to a logger.
-    fn log_utf8_string(ptr: i32, size: i32);
-}
 
-#[link(wasm_import_module = "host")]
-extern "C" {
-    /// Put a file to ipfs, returns ipfs hash of the file.
-    fn ipfs(ptr: i32, size: i32);
+fn ipfs_call(ctx: &mut Ctx, ptr: i32, size: i32) {
+    use wasmer_runtime_core::memory::ptr::{Array, WasmPtr};
+
+    let wasm_ptr = WasmPtr::<u8, Array>::new(ptr as _);
+    match wasm_ptr.get_utf8_string(ctx.memory(0), size as _) {
+        Some(msg) => println!("host ipfs_call: {}", msg),
+        None => println!("fce logger: incorrect UTF8 string's been supplied to logger"),
+    }
 }
+*/

examples/ipfs_node/src/node.rs

@@ -0,0 +1,99 @@
+/*
+ * Copyright 2020 Fluence Labs Limited
+ *
+ * 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.
+ */
+
+use super::errors::NodeError;
+
+use fce::FCE;
+use fce::WasmProcess;
+use fce::NodeFunction;
+use fce::IValue;
+use fce::FCEModuleConfig;
+
+use std::fs;
+use std::path::PathBuf;
+
+pub(crate) struct IpfsNode {
+    process: FCE,
+    // names of core modules that is loaded to FCE
+    module_names: Vec<String>,
+}
+
+pub struct NodeModule<'a> {
+    pub name: &'a str,
+    pub functions: Vec<NodeFunction<'a>>,
+}
+
+impl IpfsNode {
+    pub fn new(core_modules_dir: PathBuf, _config_file: PathBuf) -> Result<Self, NodeError> {
+        let mut wasm_process = FCE::new();
+        let mut module_names = Vec::new();
+        let core_module_config = FCEModuleConfig::default();
+
+        for entry in fs::read_dir(core_modules_dir)? {
+            let path = entry?.path();
+            if !path.is_dir() {
+                let module_name = path.file_name().unwrap();
+                let module_name = module_name.to_os_string().into_string().unwrap();
+                //.ok_or_else(|| Err(NodeError::IOError()))?;
+
+                println!("module name is {}", module_name);
+                let module_bytes = fs::read(path.clone())?;
+
+                wasm_process.load_module(
+                    module_name.clone(),
+                    &module_bytes,
+                    core_module_config.clone(),
+                )?;
+                module_names.push(module_name);
+            }
+        }
+
+        Ok(Self {
+            process: wasm_process,
+            module_names,
+        })
+    }
+
+    pub fn rpc_call(&mut self, wasm_rpc: &[u8]) -> Result<Vec<IValue>, NodeError> {
+        let core_module_config = FCEModuleConfig::default();
+        let rpc_module_name = "ipfs_rpc";
+
+        self.process
+            .load_module(rpc_module_name, wasm_rpc, core_module_config)?;
+        let call_result = self.process.call(
+            rpc_module_name,
+            "invoke",
+            &[IValue::String("test".to_string())],
+        )?;
+        self.process.unload_module(rpc_module_name)?;
+
+        Ok(call_result)
+    }
+
+    pub fn get_interface(&self) -> Vec<NodeModule> {
+        let mut modules = Vec::with_capacity(self.module_names.len());
+
+        for module_name in self.module_names.iter() {
+            let functions = self.process.get_interface(module_name).unwrap();
+            modules.push(NodeModule {
+                name: module_name,
+                functions,
+            })
+        }
+
+        modules
+    }
+}

examples/ipfs_node/wasm/ipfs_node/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "wasm_ipfs_node"
+version = "0.1.0"
+authors = ["Fluence Labs"]
+edition = "2018"
+
+[lib]
+name = "wasm_ipfs_node"
+path = "src/lib.rs"
+crate-type = ["cdylib"]

examples/ipfs_node/wasm/ipfs_node/src/lib.rs

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2020 Fluence Labs Limited
+ *
+ * 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.
+ */
+
+#![allow(clippy::missing_safety_doc)]
+
+mod mem;
+mod result;
+
+use crate::result::{RESULT_PTR, RESULT_SIZE};
+
+#[no_mangle]
+pub unsafe fn put(file_content_ptr: *mut u8, file_content_size: usize) {
+    let file_content =
+        String::from_raw_parts(file_content_ptr, file_content_size, file_content_size);
+
+    let msg = format!("from Wasm node: file content is {}\n", file_content);
+    log_utf8_string(msg.as_ptr() as _, msg.len() as _);
+
+    let cmd = format!("put {}", file_content);
+    ipfs(cmd.as_ptr() as _, cmd.len() as _);
+
+    let result = "Hello from IPFS node, take your hash".to_string();
+
+    *RESULT_PTR.get_mut() = result.as_ptr() as _;
+    *RESULT_SIZE.get_mut() = result.len();
+    std::mem::forget(result);
+}
+
+#[no_mangle]
+pub unsafe fn get(hash_ptr: *mut u8, hash_size: usize) {
+    let hash = String::from_raw_parts(hash_ptr, hash_size, hash_size);
+
+    let msg = format!("from Wasm node: file content is {}\n", hash);
+    log_utf8_string(msg.as_ptr() as _, msg.len() as _);
+
+    let cmd = format!("get {}", hash);
+    ipfs(cmd.as_ptr() as _, cmd.len() as _);
+
+    let result = "Hello from IPFS node, take your file".to_string();
+
+    *RESULT_PTR.get_mut() = result.as_ptr() as _;
+    *RESULT_SIZE.get_mut() = result.len();
+    std::mem::forget(result);
+}
+
+#[link(wasm_import_module = "logger")]
+extern "C" {
+    /// Writes a byte string of size bytes that starts from ptr to a logger.
+    fn log_utf8_string(ptr: i32, size: i32);
+}
+
+#[link(wasm_import_module = "host")]
+extern "C" {
+    /// Put a file to ipfs, returns ipfs hash of the file.
+    fn ipfs(ptr: i32, size: i32);
+}

examples/ipfs_node/wasm/ipfs_rpc/Cargo.toml

@@ -1,10 +1,10 @@
 [package]
-name = "ipfs_rpc"
+name = "wasm_ipfs_rpc"
 version = "0.1.0"
 authors = ["Fluence Labs"]
 edition = "2018"
 
 [lib]
-name = "ipfs_rpc"
+name = "wasm_ipfs_rpc"
 path = "src/lib.rs"
 crate-type = ["cdylib"]

fce/src/lib.rs

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2020 Fluence Labs Limited
+ *
+ * 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.
+ */
+#![warn(rust_2018_idioms)]
+#![feature(get_mut_unchecked)]
+#![feature(new_uninit)]
+
+mod vm;
+mod misc;
+mod wasm_process;
+
+pub use vm::FCE;
+pub use vm::FCEError;
+pub use vm::FCEModuleConfig;
+pub use vm::IValue;
+pub use vm::IType;
+pub use wasm_process::WasmProcess;
+pub use wasm_process::NodeFunction;

fce/src/main.rs

@@ -1,77 +0,0 @@
-/*
- * Copyright 2020 Fluence Labs Limited
- *
- * 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.
- */
-#![warn(rust_2018_idioms)]
-#![feature(get_mut_unchecked)]
-#![feature(new_uninit)]
-
-mod vm;
-mod misc;
-
-use vm::IValue;
-use vm::FCE;
-use vm::FCEModuleConfig;
-use vm::FCEService;
-
-const IPFS_NODE: &str =
-    "/Users/mike/dev/work/fluence/wasm/fce/target/wasm32-unknown-unknown/release/ipfs_node_wit.wasm";
-
-const IPFS_RPC: &str =
-    "/Users/mike/dev/work/fluence/wasm/fce/target/wasm32-unknown-unknown/release/ipfs_rpc_wit.wasm";
-
-fn main() {
-    let ipfs_node_bytes = std::fs::read(IPFS_NODE).unwrap();
-    let ipfs_rpc_bytes = std::fs::read(IPFS_RPC).unwrap();
-
-    let mut fce = FCE::new();
-    let config = FCEModuleConfig::default();
-
-    println!("loading ipfs node module");
-    fce.register_module("node", &ipfs_node_bytes, config.clone())
-        .expect("module successfully created");
-
-    println!("loading ipfs rpc module");
-    fce.register_module("rpc", &ipfs_rpc_bytes, config.clone())
-        .expect("module successfully created");
-
-    let result = fce
-        .call("node_rpc", "invoke", &[IValue::String("aaaa".to_string())])
-        .unwrap();
-
-    println!("execution result {:?}", result);
-}
-
-/*
-fn logger_log_utf8_string(ctx: &mut Ctx, offset: i32, size: i32) {
-    use wasmer_runtime_core::memory::ptr::{Array, WasmPtr};
-
-    let wasm_ptr = WasmPtr::<u8, Array>::new(offset as _);
-    match wasm_ptr.get_utf8_string(ctx.memory(0), size as _) {
-        Some(msg) => print!("{}", msg),
-        None => print!("fce logger: incorrect UTF8 string's been supplied to logger"),
-    }
-}
-
-
-fn ipfs_call(ctx: &mut Ctx, ptr: i32, size: i32) {
-    use wasmer_runtime_core::memory::ptr::{Array, WasmPtr};
-
-    let wasm_ptr = WasmPtr::<u8, Array>::new(ptr as _);
-    match wasm_ptr.get_utf8_string(ctx.memory(0), size as _) {
-        Some(msg) => println!("host ipfs_call: {}", msg),
-        None => println!("fce logger: incorrect UTF8 string's been supplied to logger"),
-    }
-}
-*/

fce/src/vm/errors.rs

@@ -145,6 +145,6 @@ impl From<FCEWITInterfacesError> for FCEError {
 
 impl From<()> for FCEError {
     fn from(_err: ()) -> Self {
-        FCEError::IncorrectWIT(format!("failed to parse instructions for adapter type"))
+        FCEError::IncorrectWIT("failed to parse instructions for adapter type".to_string())
     }
 }

fce/src/vm/fce.rs

@@ -16,6 +16,8 @@
 
 use super::instance::FCEModule;
 use super::*;
+use crate::WasmProcess;
+use crate::NodeFunction;
 
 use std::sync::Arc;
 use std::collections::hash_map::Entry;
@@ -40,7 +42,7 @@ impl Default for FCE {
     }
 }
 
-impl FCEService for FCE {
+impl WasmProcess for FCE {
     fn call(
         &mut self,
         module_name: &str,
@@ -56,7 +58,7 @@ impl FCEService for FCE {
         }
     }
 
-    fn register_module<S>(
+    fn load_module<S>(
         &mut self,
         module_name: S,
         wasm_bytes: &[u8],
@@ -79,7 +81,7 @@ impl FCEService for FCE {
         }
     }
 
-    fn unregister_module(&mut self, module_name: &str) -> Result<(), FCEError> {
+    fn unload_module(&mut self, module_name: &str) -> Result<(), FCEError> {
         match self.modules.entry(module_name.to_string()) {
             Entry::Vacant(_) => Err(FCEError::NoSuchModule),
 
@@ -89,4 +91,22 @@ impl FCEService for FCE {
             }
         }
     }
+
+    fn get_interface(&self, module_name: &str) -> Result<Vec<NodeFunction<'_>>, FCEError> {
+        match self.modules.get(module_name) {
+            Some(module) => {
+                let signatures = module
+                    .as_ref()
+                    .get_exports_signatures()
+                    .map(|(name, inputs, outputs)| NodeFunction {
+                        name,
+                        inputs,
+                        outputs,
+                    })
+                    .collect::<Vec<_>>();
+                Ok(signatures)
+            }
+            None => Err(FCEError::NoSuchModule),
+        }
+    }
 }

fce/src/vm/instance/fce_module.rs

@@ -110,6 +110,14 @@ impl FCEModule {
         }
     }
 
+    pub fn get_exports_signatures(
+        &self,
+    ) -> impl Iterator<Item = (&String, &Vec<IType>, &Vec<IType>)> {
+        self.exports_funcs
+            .iter()
+            .map(|(func_name, func)| (func_name, &func.inputs, &func.outputs))
+    }
+
     fn instantiate_wit_exports(
         wit: &FCEWITInterfaces<'_>,
     ) -> Result<HashMap<String, WITModuleFunc>, FCEError> {

fce/src/vm/mod.rs

@@ -16,13 +16,11 @@
 
 mod fce;
 mod instance;
-mod fce_service;
 mod config;
 mod prepare;
 mod errors;
 
 pub use fce::FCE;
-pub use fce_service::FCEService;
 pub use config::FCEModuleConfig;
 pub use errors::FCEError;
 pub use instance::{IType, IValue};

fce/src/wasm_process.rs

@@ -14,12 +14,19 @@
  * limitations under the License.
  */
 
-use super::config::FCEModuleConfig;
-use super::errors::FCEError;
+use super::FCEModuleConfig;
+use super::FCEError;
 use super::IValue;
+use super::IType;
 
-/// Describes a service behaviour in the Fluence network.
-pub trait FCEService {
+pub struct NodeFunction<'a> {
+    pub name: &'a str,
+    pub inputs: &'a Vec<IType>,
+    pub outputs: &'a Vec<IType>,
+}
+
+/// Describes a run computation node behaviour in the Fluence network.
+pub trait WasmProcess {
     /// Invokes a module supplying byte array and expecting byte array with some outcome back.
     fn call(
         &mut self,
@@ -29,7 +36,8 @@ pub trait FCEService {
     ) -> Result<Vec<IValue>, FCEError>;
 
     /// Registers new module in the FCE Service.
-    fn register_module<S>(
+    /// TODO:
+    fn load_module<S>(
         &mut self,
         module_name: S,
         wasm_bytes: &[u8],
@@ -39,5 +47,8 @@ pub trait FCEService {
         S: Into<String>;
 
     /// Unregisters previously registered module.
-    fn unregister_module(&mut self, module_name: &str) -> Result<(), FCEError>;
+    fn unload_module(&mut self, module_name: &str) -> Result<(), FCEError>;
+
+    /// Returns signatures of all exported functions by this module.
+    fn get_interface(&self, module_name: &str) -> Result<Vec<NodeFunction<'_>>, FCEError>;
 }