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docs(wasm-languages): ruby updates #1406

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Oct 30, 2024
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docs(wasm-languages): ruby updates #1406

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36 changes: 20 additions & 16 deletions content/wasm-languages/ruby.md
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Expand Up @@ -79,7 +79,7 @@ $ cd hello-ruby
```

Now fetch a copy of the Ruby source from the [official releases](https://github.com/ruby/ruby.wasm/releases).
For this example, we are downloading the `ruby-head-wasm32-unknown-wasi-full.tar.gz` version,
For this example, we are downloading the `ruby-head-wasm32-unknown-wasip1-full.tar.gz` version,
but one of the smaller versions works just as well.

Now create a local `lib` dir where we will put our own source.
Expand All @@ -96,7 +96,7 @@ At this point, our directory should look like this:
$ tree -L 2 -a -d
.
├── .gem
├── head-wasm32-unknown-wasi-full
├── ruby-head-wasm32-unknown-wasip1-full
│   ├── usr
│   └── var
└── lib
Expand All @@ -122,25 +122,25 @@ Hello, World
Ruby is a scripting language, which means it will need to load a number of scripts (ours plus all of the built-in libraries) off of its filesystem. The `spin.toml` file for Ruby is more complex than most:

```toml
spin_version = "1"
spin_manifest_version = 2

[application]
name = "example-ruby-app"
version = "0.1.0"
trigger = { type = "http", base = "/" }

[[component]]
[[trigger.http]]
component = "ruby"
route = "/"
executor = { type = "wagi", argv = "${SCRIPT_NAME} -v /lib/hello.rb ${SCRIPT_NAME} ${ARGS}" }

[component.ruby]
source = "ruby-head-wasm32-unknown-wasip1-full/usr/local/bin/ruby"
environment = { HOME = "/", GEM_HOME = "/.gem" }
files = [
{ source = "lib", destination = "/lib" },
{ source = ".gem", destination = "/.gem" },
{ source = "head-wasm32-unknown-wasi-full/usr", destination = "/usr" },
{ source = "ruby-head-wasm32-unknown-wasip1-full/usr", destination = "/usr" },
]
id = "ruby"
source = "head-wasm32-unknown-wasi-full/usr/local/bin/ruby"
[component.trigger]
executor = { type = "wagi", argv = "${SCRIPT_NAME} -v /lib/hello.rb ${SCRIPT_NAME} ${ARGS}" }
route = "/"
[component.environment]
HOME = "/"
GEM_HOME = "/.gem"
```

Note that we need to mount several sets of files: `lib`, `.gem`, and `usr`. This exposes all of Ruby's supporting files.
Expand All @@ -155,12 +155,16 @@ Next, running `spin up` will start the server.

```console
$ spin up
Logging component stdio to ".spin/logs/"
Preparing Wasm modules is taking a few seconds...

Serving HTTP on address http://127.0.0.1:3000

Serving http://127.0.0.1:3000
Available Routes:
ruby: http://127.0.0.1:3000
```

Note that the first line occurs because when Spin starts up, it does take Ruby a few moments to load all of its supporting files.
Note that the second line occurs because when Spin starts up, it does take Ruby a few moments to load all of its supporting files.
_Using one of the [smaller instances](https://github.com/ruby/ruby.wasm/releases) will improve startup time
and overall performance._

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