Experimental Clojure bindings for Hystrix

hystrix-contrib/hystrix-clj/README.md

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+# Hystrix Clojure Bindings
+
+This module contains idiomatic Clojure bindings for Hystrix.
+
+# Binaries
+
+Binaries and dependency information for Maven, Ivy, Gradle and others can be found at [http://search.maven.org](http://search.maven.org/#search%7Cga%7C1%7Ca%3A%22hystrix-clj%22).
+
+Example for Maven:
+
+```xml
+<dependency>
+    <groupId>com.netflix.hystrix</groupId>
+    <artifactId>hystrix-clj</artifactId>
+    <version>x.y.z</version>
+</dependency>
+```
+
+and for Ivy:
+
+```xml
+<dependency org="com.netflix.hystrix" name="hystrix-clj" rev="x.y.z" />
+```
+
+and for Leiningen:
+
+```clojure
+[com.netflix.hystrix/hystrix-clj "x.y.z"]
+```
+
+# Usage
+
+Please see the docstrings in src/com/netflix/hystrix/core.clj for extensive usage info.
+
+## TL;DR
+You have a function that interacts with an untrusted dependency:
+
+```clojure
+(defn make-request
+  [arg]
+  ... make the request ...)
+
+; execute the request
+(make-request \"baz\")
+```
+
+and you want to make it a Hystrix dependency command. Do this:
+
+```clojure
+(defcommand make-request
+  [arg]
+  ... make the request ...)
+
+; execute the request
+(make-request \"baz\")
+
+; or queue for async execution
+(queue #'make-request \"baz\")
+```
+

hystrix-contrib/hystrix-clj/build.gradle

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+    buildscript {
+        repositories {
+            mavenRepo name: 'clojars', url: 'http://clojars.org/repo'
+        }
+        dependencies {
+            classpath 'clojuresque:clojuresque:1.5.5'
+        }
+    }
+    apply plugin: 'clojure'
+
+    repositories {
+        mavenCentral()
+        clojarsRepo()
+    }
+
+    dependencies {
+        compile project(':hystrix-core')
+        compile 'org.clojure:clojure:1.4.0'
+    }
+
+    // This is a bit of a hack to get a copy of the classpath so I can use
+    // Leiningen to get a nrepl server going. One day Clojuresque might support it.
+    task outputClasspath {
+        def outputFile = new File('runtimeClasspath')
+        dependsOn classes
+        // This task is fast, so always running it is ok.
+        //inputs.files sourceSets.main.runtimeClasspath
+        //outputs.file outputFile
+        doFirst {
+            outputFile.withWriter {
+                it.write sourceSets.main.runtimeClasspath.asPath
+            }
+        }
+    }
+    build.dependsOn outputClasspath
+
+// vim:ft=groovy

hystrix-contrib/hystrix-clj/project.clj

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+; This is a dummy lein project for using nrepl, vimclojure, etc.
+(defproject hystrix-clj "0.0.0"
+  :description ""
+  :url ""
+  :license {:name ""
+            :url "http://netflix.com"}
+
+  ; No dependencies here because we rely on Ivy and the :resoure-paths hack below
+  :dependencies []
+  :warn-on-reflection true
+
+  :profiles {
+    :dev {
+      :jvm-opts [ ]
+      :source-paths ["src/main/clojure" "src/test/clojure"]
+
+      ; runtimeClasspath is generated by build.gradle
+      :resource-paths ~(-> "runtimeClasspath"
+                         slurp
+                         (.split ":")
+                         vec) }})
+