Add readme and some tweaks to the cli arguments.

Cargo.toml

@@ -10,7 +10,7 @@ tokio = { version = "1.14.0", features = ["full"] }
 anyhow = "1.0.51"
 tracing = "0.1"
 tracing-subscriber = "0.2"
-clap = { version = "3.0.0-rc.0", features = ["derive"] }
+clap = { version = "3.0.0-rc.0", features = ["derive", "env"] }
 redis = { version = "0.21.4", features = ["tokio-comp"] }
 futures = "0.3"
 tokio-stream = { version = "0.1.8", features = ["io-util"] }

README.md

@@ -0,0 +1,29 @@
+# queuectl
+
+Program to bulk-load items into redis queues.
+
+Call it using `./queuectl -h` to see the instructions.
+Note that the default redis url assumes the primary redis on blackbird is available on localhost using the default redis port.
+
+Note that there is an environment variable set on blackbird that will make it just work ther eas well.
+
+## Features
+* Retrieve files from URLs
+* ZSTD Decompression
+* XZ Decompression
+* GZIP Decompression
+* Progress bar (can be disabled)
+
+## Building
+Install rust via rustup.
+Enable the `x86_64-unknown-linux-musl` target architecture.
+```sh
+rustup target add x86_64-unknown-linux-musl
+```
+Now build the binary using:
+```sh
+cargo build --release --target=x86_64-unknown-linux-musl
+```
+
+The binary is now at `target/x86_64-unknown-linux-musl/release/queuectl`.
+This is a static binary that can be copied around at will.

src/args.rs

@@ -17,7 +17,7 @@ pub struct Cli {
     #[clap(long, default_value = "8192")]
     /// How many items to send per SADD command.
     pub chunk_size: usize,
-    #[clap(long, default_value = "redis://127.0.0.1/")]
+    #[clap(short, long, default_value = "redis://127.0.0.1/", env = "TRACKER_REDIS_URL")]
     /// URL of the redis to connect to.
     pub redis: String,
     #[clap(long, short, default_value = "auto", arg_enum)]