add FCE examples

url-downloader/local_storage/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "local_storage"
+version = "0.1.0"
+authors = ["Fluence Labs"]
+edition = "2018"
+publish = false
+
+[[bin]]
+name = "local_storage"
+path = "src/main.rs"
+
+[dependencies]
+fluence = { version = "=0.3.2", features = ["logger"]}
+log = "0.4.8"

url-downloader/local_storage/src/main.rs

@@ -0,0 +1,51 @@
+/*
+ * 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 std::fs;
+use fluence::fce;
+use fluence::WasmLoggerBuilder;
+use std::path::PathBuf;
+
+const SITES_DIR: &str = "/sites/";
+
+/// Log level can be changed by `RUST_LOG` env as well.
+pub fn main() {
+    WasmLoggerBuilder::new().build().unwrap();
+}
+
+/// 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);
+
+    let rpc_tmp_filepath = format!("{}{}", SITES_DIR, name);
+
+    let result = fs::write(PathBuf::from(rpc_tmp_filepath.clone()), file_content);
+    if let Err(e) = result {
+        return format!("file can't be written: {}", e);
+    }
+
+    String::from("Ok")
+}
+
+#[fce]
+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);
+
+    fs::read(tmp_filepath).unwrap_or_else(|_| b"error while reading file".to_vec())
+}