rust: add basic Rust platform

 Refs tsuru#20

README.md

@@ -19,6 +19,7 @@ All platforms are available in Docker Hub:
 * tsuru/python: https://hub.docker.com/r/tsuru/python/
 * tsuru/pypy: https://hub.docker.com/r/tsuru/pypy/
 * tsuru/ruby: https://hub.docker.com/r/tsuru/ruby/
+* tsuru/rust: https://hub.docker.com/r/tsuru/rust/
 * tsuru/static: https://hub.docker.com/r/tsuru/static/
 
 Installing platforms
@@ -60,3 +61,10 @@ We provide a base image which platform developers can use to build upon:
 a base deployment script, which handles package downloading and extraction in
 proper path, along with operating system package management. For more details,
 check the README of base-platform.
+
+To update a platform:
+
+    docker rmi 127.0.0.1:5000/rust
+    docker build -t 127.0.0.1:5000/rust .
+    docker push 127.0.0.1:5000/rust
+    tsuru-admin platform-update rust -i 127.0.0.1:5000/rust

rust/Dockerfile

@@ -0,0 +1,11 @@
+# Copyright 2016 tsuru authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+FROM	tsuru/base-platform
+RUN	pwd
+RUN	ls
+RUN	ls .
+ADD	. /var/lib/tsuru/rust
+RUN	cp /var/lib/tsuru/rust/deploy /var/lib/tsuru
+RUN	/var/lib/tsuru/rust/install

rust/Procfile

@@ -0,0 +1 @@
+web: %web%

rust/README.md

@@ -0,0 +1,24 @@
+# Rust Platform
+
+The Rust platform supports code deployment, the application is built in the
+target.
+
+
+## Code deployment
+
+If you just run a ``git push`` of your code, tsuru will install the application
+using ``cargo install`` – which fetches all the dependencies automatically.
+
+##Binary deployment
+
+For binary deployment, ensure the name of the binary file matches what's in
+Procfile. Also make sure it matches the target platform (usually linux_amd64),
+For example:
+
+    $ ls
+    Cargo.lock  Cargo.toml  src     target
+    $ rustup target add x86_64-unknown-linux-gnu
+    $ cargo build --release --target=x86_64-unknown-linux-gnu
+    $ cat Procfile
+    web: ./hello_world
+    $ tsuru app-deploy -a [app-name] target/x86_64-unknown-linux-gnu/release/hello_world Procfile

rust/deploy

@@ -0,0 +1,23 @@
+#!/bin/bash -el
+
+# Copyright 2016 tsuru authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+SOURCE_DIR=/var/lib/tsuru
+source ${SOURCE_DIR}/base/deploy
+source ${SOURCE_DIR}/base/rc/config
+
+if [ -f ${CURRENT_DIR}/Cargo.toml ]; then
+	pushd ${CURRENT_DIR} >/dev/null 2>&1
+	if [ ! -f ${CURRENT_DIR}/Procfile ]; then
+		echo "Procfile not found, using default one."
+		PKG_NAME=$(awk -F ' *= *' \
+			'{if ($1 ~ /^\[package\]/) stop=1; else if ($1 ~ /^name$/ && stop){print $2; exit}}' \
+			${CURRENT_DIR}/Cargo.toml | cut -d\" -f2)
+		echo "Package name: $PKG_NAME"
+		sed s:%web%:$PKG_NAME: ${SOURCE_DIR}/default/Procfile > ${CURRENT_DIR}/Procfile
+	fi
+	cargo install --force --verbose
+	popd >/dev/null 2>&1
+fi

rust/install

@@ -0,0 +1,26 @@
+#!/bin/bash -el
+
+# Copyright 2016 tsuru authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+SOURCE_DIR=/var/lib/tsuru
+source ${SOURCE_DIR}/base/rc/config
+
+# As of 2016-07-07 `file` is needed. Please check:
+# https://github.com/rust-lang-nursery/rustup.rs/issues/466
+apt-get update && apt-get install -y file gcc git
+
+sh <(curl -sSf https://static.rust-lang.org/rustup.sh) --verbose -y --channel=stable
+
+cp ${SOURCE_DIR}/rust/Procfile ${SOURCE_DIR}/default/Procfile
+
+CARGO_HOME=${APP_DIR}/.cargo
+mkdir -p ${CARGO_HOME}/bin
+mkdir ${CARGO_HOME}/target
+
+echo "export CARGO_HOME=${CARGO_HOME}" >> ${HOME}/.profile
+echo 'export CARGO_TARGET_DIR=$CARGO_HOME/target' >> ${HOME}/.profile
+echo 'PATH=$CARGO_HOME/bin:$PATH' >> ${HOME}/.profile
+
+chown -R ${USER}:${USER} ${CARGO_HOME}