add README

README.md

@@ -0,0 +1,46 @@
+# Multi module example
+This is an example of multi modules feature of the Fluence Compute Engine (FCE). It simply passes commands to Redis or SQlite depends on the first parameter:
+```
+sqlite <sql> => returns result of execution sql request of SQlite
+redis <cmd>  => the same for Redis 
+``` 
+
+# How to build
+
+To build you need Rust with wasm32-unknown-unknown target installed, then just type:
+
+```bash
+cargo build --release --target wasm32-unknown-unknown
+```
+
+# How to run
+
+To run this example you need FCE and [Redis](https://github.com/fluencelabs/redis/releases/download/0.8.0_w/redis.wasm) and [SQlite](https://github.com/fluencelabs/sqlite/releases/download/0.4.0_w/sqlite3.wasm) wasm binaries.
+
+Then run fce and at first load sqlite and redis and only then this example:
+
+```bush
+$> Welcome to the Frank CLI:
+$> >> add redis redis.wasm
+$> module successfully registered in Frank
+$> >> add sqlite sqlite3.wasm
+$> module successfully registered in Frank
+$> >> add mm mm.wasm
+$> module successfully registered in Frank
+``` 
+
+Finally, you could execute requests inside FCE CLI:
+
+```bush
+>> execute redis SET A 1
+result: +OK
+>> execute redis GET A
+result: $1
+1
+>> execute sqlite CREATE VIRTUAL TABLE users USING FTS5(body)
+result: OK
+>> execute sqlite INSERT INTO users(body) VALUES('AB'), ('BC'), ('CD'), ('DE')
+result: OK
+>> execute sqlite SELECT * FROM users WHERE users MATCH 'A* OR B*'
+result: AB|BC
+```

src/lib.rs

@@ -11,9 +11,11 @@ fn run(arg: String) -> Vec<u8> {
         return "incorrect command".as_bytes().to_vec();
     }
 
+    let arg = cmd[1..].join(" ");
+
     match cmd[0] {
-        "redis" => redis::call(cmd[1].as_bytes()),
+        "redis" => redis::call(arg.as_bytes()),
-        "sqlite" => sqlite::call(cmd[1].as_bytes()),
+        "sqlite" => sqlite::call(arg.as_bytes()),
         _ => "unknown_command".as_bytes().to_vec(),
     }
 }