Update url downloader for workshop (#2)

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folex 2021-03-18 00:02:36 +03:00 committed by GitHub
parent 8cffdea6d9
commit 8b103e4c2c
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15 changed files with 359 additions and 45 deletions

13
url-downloader/README.md Normal file
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@ -0,0 +1,13 @@
# Download file to disk
Example to show how to work with disk + link several .wasm modules into a service.
# Build & deploy it
```shell
./deploy.sh
```
# Call it
```shell
fldist run_air -p download.air -d '{"service": "f7db6966-2d75-4424-812e-85e2ec5cb61b"}'
```

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@ -0,0 +1,7 @@
{
"name": "curl_adapter",
"mountedBinaries":
{
"curl": "/usr/bin/curl"
}
}

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@ -0,0 +1 @@
{"name": "facade"}

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@ -0,0 +1,12 @@
{
"name": "local_storage",
"preopenedFiles": [
"/tmp"
],
"mappedDirs": {
"sites": "/tmp"
},
"mountedBinaries": {
"curl": "/usr/bin/curl"
}
}

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@ -1,18 +1,24 @@
#!/bin/sh
#!/bin/sh -euo pipefail
# This script builds all subprojects and puts all created Wasm modules in one dir
cd local_storage
cargo update
fce build --release
cd ../curl_adapter
cargo update
fce build --release
cd ../facade
cargo update
fce build --release
(
cd local_storage
cargo update
fce build --release
)
(
cd curl_adapter
cargo update
fce build --release
)
(
cd facade
cargo update
fce build --release
)
cd ..
rm -f artifacts/*
cp ../../target/wasm32-wasi/release/local_storage.wasm artifacts/
cp ../../target/wasm32-wasi/release/curl_adapter.wasm artifacts/
cp ../../target/wasm32-wasi/release/facade.wasm artifacts/
mkdir -p artifacts
rm -f artifacts/*.wasm
cp local_storage/target/wasm32-wasi/release/local_storage.wasm artifacts/
cp curl_adapter/target/wasm32-wasi/release/curl_adapter.wasm artifacts/
cp facade/target/wasm32-wasi/release/facade.wasm artifacts/

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@ -0,0 +1,13 @@
(xor
(seq
(seq
(seq
(call relay (curl "download") ["https://fluence.network/img/svg/logo_new.svg"] contents)
(call relay (storage "put") ["logo.svg" contents.$.stdout!] ret_code)
)
(call relay (storage "get") ["logo.svg"] bytes)
)
(call %init_peer_id% (returnService "run") [ret_code bytes])
)
(call %init_peer_id% (returnService "run") [%last_error%])
)

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@ -17,12 +17,10 @@
#![allow(improper_ctypes)]
use fluence::fce;
use fluence::module_manifest;
use fluence::WasmLoggerBuilder;
use fluence::MountedBinaryResult;
module_manifest!();
use fluence::MountedBinaryResult as Result;
use fluence::MountedBinaryStringResult as StringResult;
/// Log level can be changed by `RUST_LOG` env as well.
pub fn main() {
@ -30,16 +28,21 @@ pub fn main() {
}
#[fce]
pub fn download(url: String) -> String {
log::info!("get called with url {}", url);
let result = unsafe { curl(vec![url]) };
String::from_utf8(result.stdout).unwrap()
pub fn request(url: String) -> StringResult {
unsafe { curl(vec![url]) }.stringify().unwrap()
}
#[fce]
pub fn download(url: String) -> Result {
log::info!("download called with url {}", url);
unsafe { curl(vec![url]) }
}
/// Permissions in `Config.toml` should exist to use host functions.
#[fce]
#[link(wasm_import_module = "host")]
extern "C" {
fn curl(cmd: Vec<String>) -> MountedBinaryResult;
fn curl(cmd: Vec<String>) -> Result;
}

12
url-downloader/deploy.sh Executable file
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@ -0,0 +1,12 @@
#!/bin/sh -euo pipefail
# build wasms
./build.sh
(
cd artifacts
fldist new_service --name "url_downloader" --modules \
curl_adapter.wasm:curl_adapter.json \
local_storage.wasm:local_storage.json \
facade.wasm:facade.json
)

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@ -0,0 +1,15 @@
#!/bin/sh -euo pipefail
./build.sh
echo "Deploying storage"
(
cd artifacts
fldist new_service --name "local_storage" --modules local_storage.wasm:local_storage.json
)
echo "\n\nDeploying curl"
(
cd artifacts
fldist new_service --name "curl_adapter" --modules curl_adapter.wasm:curl_adapter.json
)

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@ -0,0 +1,10 @@
(xor
(seq
(seq
(call relay (service "get_n_save") ["https://fluence.network/img/svg/logo_new.svg" "logo.svg"] ret_code)
(call relay (service "load_file") ["logo.svg"] bytes)
)
(call %init_peer_id% (returnService "run") [ret_code bytes])
)
(call %init_peer_id% (returnService "run") [%last_error%])
)

192
url-downloader/facade/Cargo.lock generated Normal file
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@ -0,0 +1,192 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
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name = "anyhow"
version = "1.0.38"
source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
name = "facade"
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dependencies = [
"anyhow",
"base64",
"fluence",
"log",
]
[[package]]
name = "fluence"
version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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"fluence-sdk-macro",
"fluence-sdk-main",
]
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"fluence-sdk-wit",
]
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name = "fluence-sdk-main"
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"log",
"serde",
]
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]
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dependencies = [
"cfg-if",
"libc",
"wasi",
]
[[package]]
name = "itoa"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -13,3 +13,4 @@ path = "src/main.rs"
fluence = { version = "=0.5.0", features = ["logger"]}
anyhow = "1.0.31"
log = "0.4.8"
base64 = "0.13.0"

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@ -18,6 +18,7 @@
use fluence::fce;
use fluence::module_manifest;
use fluence::WasmLoggerBuilder;
use fluence::MountedBinaryResult as Result;
module_manifest!();
@ -30,19 +31,30 @@ pub fn main() {
#[fce]
pub fn get_n_save(url: String, file_name: String) -> String {
let result = unsafe { download(url) };
unsafe { file_put(file_name, result.into_bytes()) };
String::from("Ok")
if result.is_success() {
log::info!("saving file {}", file_name);
unsafe { file_put(file_name, result.stdout) }
} else {
log::error!("download failed: {:#?}", result.as_std());
format!("download failed: {:#?}", result.as_std())
}
}
/// Importing `curl` module
#[fce]
/// Loads file from disk and returns its content as base64
pub fn load_file(file_name: String) -> String {
let bytes = unsafe { file_get(file_name) };
base64::encode(bytes)
}
/// Import `curl_adapter` module
#[fce]
#[link(wasm_import_module = "curl_adapter")]
extern "C" {
pub fn download(url: String) -> String;
pub fn download(url: String) -> Result;
}
/// Importing `local_storage` module
/// Import `local_storage` module
#[fce]
#[link(wasm_import_module = "local_storage")]
extern "C" {

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@ -14,14 +14,10 @@
* limitations under the License.
*/
use fluence::fce;
use fluence::module_manifest;
use fluence::WasmLoggerBuilder;
use std::fs;
use std::path::PathBuf;
module_manifest!();
use fluence::fce;
use fluence::WasmLoggerBuilder;
use std::path::Path;
const SITES_DIR: &str = "/sites/";
@ -32,14 +28,14 @@ pub fn main() {
/// You can read or write files from the file system if there is permission to use directories described in `Config.toml`.
#[fce]
pub fn put(name: String, file_content: Vec<u8>) -> String {
log::info!("put called with file name {}", name);
pub fn put(file_name: String, file_content: Vec<u8>) -> String {
log::info!("put called with file name {}", file_name);
let rpc_tmp_filepath = format!("{}{}", SITES_DIR, name);
let path = Path::new(SITES_DIR).join(file_name);
let result = fs::write(PathBuf::from(rpc_tmp_filepath.clone()), file_content);
let result = fs::write(&path, file_content);
if let Err(e) = result {
return format!("file can't be written: {}", e);
return format!("file {} can't be written: {}", path.to_string_lossy(), e);
}
String::from("Ok")
@ -49,7 +45,7 @@ pub fn put(name: String, file_content: Vec<u8>) -> String {
pub fn get(file_name: String) -> Vec<u8> {
log::info!("get called with file name: {}", file_name);
let tmp_filepath = format!("{}{}", SITES_DIR, file_name);
let path = Path::new(SITES_DIR).join(file_name);
fs::read(tmp_filepath).unwrap_or_else(|_| b"error while reading file".to_vec())
fs::read(&path).unwrap_or_else(|err| format!("error while reading file {}: {}", path.to_string_lossy(), err).into_bytes())
}

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@ -0,0 +1,21 @@
modules_dir = "artifacts/"
[[module]]
name = "local_storage"
logger_enabled = true
[module.wasi]
preopened_files = ["."]
# this is where files will be stored
mapped_dirs = { "sites" = "." }
[[module]]
name = "curl_adapter"
logger_enabled = true
[module.mounted_binaries]
curl = "/usr/bin/curl"
[[module]]
name = "facade"
logger_enabled = true