second-state / wasmedge-go-examples

WasmEdge-Go Examples

The WasmEdge is a high performance WebAssembly runtime optimized for server side applications. The WasmEdge-Go provides a golang package for accessing to WasmEdge.

Getting Started

Before trying the examples, the WasmEdge installation is required. The WasmEdge extensions are built for Linux platforms. For the Windows and MacOS users, there is only the WasmEdge without extensions can be installed.

This repository contains examples of WasmEdge-Go.

• Basic examples: The basic API examples for WasmEdge-Go.
  • go_PrintFibonacci: Various WasmEdge-Go API examples in Golang.
  • go_ReadFile: Invoke WASM with WASI in Golang.
  • go_WasmAOT: WASM AOT compiler in Golang.
  • go_ExternRef: External reference and host functions in Golang examples.
  • go_ThreadsMandelbrot: WASM threads proposal example to draw the mandelbrot image.
• WasmEdge-Bindgen examples: The tutorials for wasmedge-bindgen from Rust sources and executions.
  • go_BindgenFuncs: Example for invokation the functions from Rust source with wasmedge-bindgen.
  • go_BindgenKmeans: Example for kmeans calculation with wasmedge-bindgen.
  • go_BindgenWasi: Invoke WASM with WASI and wasmedge-bindgen.
  • go_TfliteFood: Basic TensorFlow-Lite food example with wasmedge-bindgen.
• Mobilenet examples
  • go_Mobilenet: Basic mobilenet example with wasmedge-bindgen.
  • go_MobilenetBirds, go_MobilenetFood, go_MobilenetInsects, and go_MobilenetPlants: MobileNet examples for every categories.
• Tensorflow extension examples
  • go_mtcnn: WasmEdge-tensorflow extension in WasmEdge-Go example.
• Memory examples
  • go_AccessMemory: Example showing how to pass and return memory pointer in WASM.
  • go_AccessMemoryTinyGo: Example showing how to pass and return memory pointer in WASM which is compiled from TinyGo.
  • go_MemoryGreet: Example showing how to pass and return string using pointer in WASM.
  • go_MemoryGreetTinyGo: Example showing how to pass and return string using pointer in WASM which is compiled from TinyGo.

wasmedge-go-examples's Issues

go_BindgenFuncs doesn't work

Try the example from
https://github.com/second-state/WasmEdge-go-examples/tree/master/go_BindgenFuncs

Env

my env: Ubuntu 20.04 LTS
go version go1.19.4 linux/amd64
rustc 1.66.0 (69f9c33d7 2022-12-12)
wasmedge version 0.11.2

Problem 1

if I build the bindgen_funcs and run with the wasm provided by the repo itself. I get this error

./bindgen_funcs rust_bindgen_funcs_lib_bg.wasm
[2022-12-21 02:38:32.641] [error] loading failed: invalid path, Code: 0x20
[2022-12-21 02:38:32.641] [error]     File name: "/home/clin4/github/WasmEdge-go-examples/wasmedge-bindgen/go_BindgenFuncs/rust_bindgen_funcs_lib_bg.wasm"
[2022-12-21 02:38:32.641] [error] wasmedge runtime failed: wrong VM workflow, Code: 0x04
[2022-12-21 02:38:32.642] [error] wasmedge runtime failed: wrong VM workflow, Code: 0x04
[2022-12-21 02:38:32.642] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:38:32.642] [error]     When executing function name: "allocate"
Run bindgen -- create_line FAILED wrong instance address
[2022-12-21 02:38:32.642] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:38:32.642] [error]     When executing function name: "allocate"
Run bindgen -- say FAILED
[2022-12-21 02:38:32.642] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:38:32.642] [error]     When executing function name: "allocate"
Run bindgen -- obfusticate FAILED
[2022-12-21 02:38:32.642] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:38:32.642] [error]     When executing function name: "allocate"
Run bindgen -- lowest_common_multiple FAILED
[2022-12-21 02:38:32.642] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:38:32.642] [error]     When executing function name: "allocate"
Run bindgen -- sha3_digest FAILED
[2022-12-21 02:38:32.642] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:38:32.642] [error]     When executing function name: "allocate"
Run bindgen -- keccak_digest FAILED

problem 2

If i build the rust wasm myself, I will get a different error

cargo build --target wasm32-wasi --release
./bindgen_funcs  2.wasm
[2022-12-21 02:47:46.618] [error] instantiation failed: unknown import, Code: 0x62
[2022-12-21 02:47:46.619] [error]     When linking module: "wasmedge-bindgen" , function name: "return_error"
[2022-12-21 02:47:46.619] [error]     At AST node: import description
[2022-12-21 02:47:46.619] [error]     At AST node: import section
[2022-12-21 02:47:46.619] [error]     At AST node: module
[2022-12-21 02:47:46.619] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:47:46.619] [error]     When executing function name: "allocate"
Run bindgen -- create_line FAILED wrong instance address
[2022-12-21 02:47:46.619] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:47:46.619] [error]     When executing function name: "allocate"
Run bindgen -- say FAILED
[2022-12-21 02:47:46.619] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:47:46.619] [error]     When executing function name: "allocate"
Run bindgen -- obfusticate FAILED
[2022-12-21 02:47:46.619] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:47:46.619] [error]     When executing function name: "allocate"
Run bindgen -- lowest_common_multiple FAILED
[2022-12-21 02:47:46.619] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:47:46.619] [error]     When executing function name: "allocate"
Run bindgen -- sha3_digest FAILED
[2022-12-21 02:47:46.619] [error] execution failed: wrong instance address, Code: 0x80
[2022-12-21 02:47:46.619] [error]     When executing function name: "allocate"
Run bindgen -- keccak_digest FAILED

Any help will be highly appreciate!

unknown import, Code: 0x62

I'm using the bindgen example to run my rust code. I have followed all steps to setup my environment.

❯ ./bindgen_funcs rust_bindgen_funcs/pkg/rust_bindgen_funcs_lib_bg.wasm
[2022-06-01 18:17:59.023] [error] instantiation failed: unknown import, Code: 0x62
[2022-06-01 18:17:59.023] [error]     When linking module: "env" , function name: "return_error"
[2022-06-01 18:17:59.023] [error]     At AST node: import description
[2022-06-01 18:17:59.023] [error]     At AST node: import section
[2022-06-01 18:17:59.023] [error]     At AST node: module
[2022-06-01 18:17:59.023] [error] execution failed: wrong instance address, Code: 0x80
[2022-06-01 18:17:59.023] [error]     When executing function name: "__wbindgen_malloc"
panic: toWasmEdgeValueSlideBindgen(): malloc failed

goroutine 1 [running]:
github.com/second-state/WasmEdge-go/wasmedge.toWasmEdgeValueSlideBindgen(0x4ae7e6?, 0x4ae7e6?, 0x0, {0xc00005cf40, 0x3, 0x7fc023bc0a68?})
        /home/ME/go/pkg/mod/github.com/second-state/[email protected]/wasmedge/value.go:321 +0xa85
github.com/second-state/WasmEdge-go/wasmedge.(*VM).ExecuteBindgen(0xc00019e060?, {0x4ae7e6, 0xa}, 0xc0000506b0?, {0xc00005cf40, 0x3, 0x3})
        /home/ME/go/pkg/mod/github.com/second-state/[email protected]/wasmedge/vm.go:275 +0xf8
main.main()
        /home/ME/MY-PROJECT/bindgen/bindgen_funcs.go:40 +0x30

unfortunately I cannot make sense on any of those errors.

EDIT:

I now followed the instructions in joey to install everthing and now face

./bindgen_funcs: symbol lookup error: ./bindgen_funcs: undefined symbol: WasmEdge_ModuleInstanceListMemory

Run example get fatal error: 'wasmedge.h' file not found

After run

$ cd go_ExternRef
$ go get -u github.com/second-state/WasmEdge-go
$ go build

I got follwing error:

# github.com/second-state/WasmEdge-go/wasmedge
/Users/zc/go/pkg/mod/github.com/second-state/[email protected]/wasmedge/ast.go:3:11: fatal error: 'wasmedge.h' file not found
 #include <wasmedge.h>
          ^~~~~~~~~~~~
1 error generated.

I am using go version go1.17.2 darwin/amd64.

fatal error: wasmedge/wasmedge.h: No such file or directory

Hello,

I am trying to run this example https://wasmedge.org/book/en/sdk/go/memory.html#pass-strings-to-tinygo-functions
with go1.19.3 linux/amd64

I wrapped the code in unit test, got error when trying to run it:

vitvlkv@emc2:~/tp/backend/indicators/tpi_worker/junk$ go test ./run_wasmedge/
# github.com/second-state/WasmEdge-go/wasmedge
/home/vitvlkv/go/pkg/mod/github.com/second-state/[email protected]/wasmedge/ast.go:3:11: fatal error: wasmedge/wasmedge.h: No such file or directory
    3 | // #include <wasmedge/wasmedge.h>
      |           ^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
FAIL    gitlab.takeprofit.team/backend/indicators/tpi_worker/junk/run_wasmedge [build failed]
FAIL