attempting to find a sane model for Golang

INSTALL.md

@@ -228,17 +228,19 @@ Since Raspbian's Go compiler is version 1.0.2, we need something more up-to-date
 2. Unpack it under the `piku` user like such:
 
 ```bash
-su - piku
+sudo su - piku
-cd ~
 tar -zxvf /tmp/go1.5.3.linux-arm.tar.gz
+# remove unnecessary files
+rm -rf go/api go/blog go/doc go/misc go/test
 ```
 
 3. Give it a temporary `GOPATH` and install `godep`:
 
 ```bash
-su - piku
+sudo su - piku
-cd ~
+GOROOT=$HOME/go GOPATH=$HOME/gopath PATH=$PATH:$HOME/go/bin go get github.com/tools/godep
-GOROOT=$HOME/go GOPATH=$HOME/golibs PATH=$PATH:$HOME/go/bin go get github.com/tools/godep
+# temporary workaround until this is fixed in godep or Go 1.7(?)
+GOROOT=$HOME/go GOPATH=$HOME/gopath PATH=$PATH:$HOME/go/bin go get golang.org/x/sys/unix
 ```
 
 _TODO: complete this._

examples/golang/Godeps/Godeps.json

@@ -0,0 +1,6 @@
+{
+        "ImportPath": ".",
+        "GoVersion": "go1.5",
+        "GodepVersion": "v61",
+        "Deps": ["github.com/labstack/echo"]
+}

examples/golang/server.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+    "os"
+    "net/http"
+    "github.com/labstack/echo"
+    "github.com/labstack/echo/engine/standard"
+)
+
+func main() {
+    e := echo.New()
+    e.Get("/", func(c echo.Context) error {
+        return c.String(http.StatusOK, "Hello, World!")
+    })
+    e.Run(standard.New(":" + os.Getenv("PORT")))
+}

piku.py

@@ -139,8 +139,9 @@ def do_deploy(app, deltas={}):
             if exists(join(app_path, 'requirements.txt')):
                 echo("-----> Python app detected.", fg='green')
                 deploy_python(app, deltas)
-            # if exists(join(app_path, 'Godeps')) or len(glob(join(app_path),'*.go')):
+            if exists(join(app_path, 'Godeps')) or len(glob(join(app_path),'*.go')):
-            # Go deployment
+                echo("-----> Go app detected.", fg='green')
+                deploy_go(app, deltas)
             else:
                 echo("-----> Could not detect runtime!", fg='red')
             # TODO: detect other runtimes
@@ -150,6 +151,33 @@ def do_deploy(app, deltas={}):
         echo("Error: app '%s' not found." % app, fg='red')
         
         
+def deploy_go(app, deltas={}):
+    """Deploy a Go application"""
+
+    go_path = join(ENV_ROOT, app)
+    deps = join(APP_ROOT, app, 'Godeps')
+
+    first_time = False
+    if not exists(go_path):
+        echo("-----> Creating GOPATH for '%s'" % app, fg='green')
+        os.makedirs(go_path)
+        # copy across a pre-built GOPATH to save provisioning time 
+        call('cp -a $HOME/gopath %s' % app, cwd=ENV_ROOT, shell=True)
+        first_time = True
+
+    if exists(deps):
+        if first_time or getmtime(deps) > getmtime(go_path):
+            echo("-----> Running godep for '%s'" % app, fg='green')
+            env = {
+                'GOPATH': '$HOME/gopath',
+                'GOROOT': '$HOME/go',
+                'PATH': '$PATH:$HOME/go/bin',
+                'GO15VENDOREXPERIMENT': '1'
+            }
+            call('godep update ...', cwd=join(APP_ROOT, app), env=env, shell=True)
+    spawn_app(app, deltas)
+
+
 def deploy_python(app, deltas={}):
     """Deploy a Python application"""