Merge pull request #136 from atc-/0.98.0

0.98.0

Author: Alex Collins

README.md

@@ -24,7 +24,9 @@ The application boasts the following features:
 
  * Custom deployment context (e.g. /reg-ui)
 
- * Exposes the webapp's configuration data as a volume for use with data-containers or simple host directory storage
+ * Read only mode for preventing registry configuration changes once running
+ 
+ * Stateless application
 
 ## Demo
 
@@ -74,6 +76,11 @@ You can deploy this container in a custom context as such:
 
 will expose the container under `http://localhost/ui`.
 
+## Read Only Mode
+
+Using the container parameter `-e READ_ONLY=true` will enable read only mode, which prevents manipulation of the 
+registry configurations at runtime.
+
 # License
 
 As of release 0.9.5, this project is licenced under GPL v3.0. See the LICENSE file.

application.properties

@@ -1,5 +1,5 @@
 #Grails Metadata file
 #Wed Jul 09 18:55:10 BST 2014
-app.grails.version=2.4.2
+app.grails.version=2.4.4
 app.name=docker-registry-ui
-app.version=0.96.0
+app.version=0.98.0

build-deploy.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 ./grailsw war docker-registry-ui.war && \
-	scp docker-registry-ui.war $1:$2
+	docker build .
 

grails-app/conf/BootStrap.groovy

@@ -1,7 +1,8 @@
 import docker.registry.web.Registry
+import docker.registry.web.Setting
 import docker.registry.web.User
 
-class BootStrap {
+public class BootStrap {
 
     def init = { servletContext ->
         if (!User.findByUsername("admin")) {
@@ -12,30 +13,45 @@ class BootStrap {
         }
 
         log.info("Checking for registries in system env")
-        System.getenv().each { key, urlStr ->
+        System.getenv().each { key, val ->
             if (key.matches("REG(\\d)")) {
-                log.info("Found registry $urlStr. Creating...")
-                def reg = Registry.fromUrl(urlStr)
-
-                if (reg) {
-                    if (Registry.findByHostAndApiVersion(reg.host, reg.apiVersion)) {
-                        log.info("Not creating registry ${urlStr} as it already exists")
-                    } else {
-                        log.info("Registry ${reg} doesn't exist; saving")
-                        reg.save()
-                    }
-
-                    if (!reg.ping()) {
-                        log.warn("Registry '${reg.toUrl()}' ping failed! Check it's up!")
-                    }
-
-                } else {
-                    log.error("Couldn't parse valid registry URL from $urlStr")
-                }
+                handleRegistry(val)
+            } else if ("READ_ONLY".equalsIgnoreCase(key)) {
+                handleReadOnlyMode(val)
             }
         }
     }
 
+    def handleReadOnlyMode(String val) {
+        if (val?.matches("true|false")) {
+            new Setting(name: "READ_ONLY", value: val.toString()).save()
+            log.info("Read only mode enabled")
+        } else {
+            log.error("Ignoring value ${val} for READ_ONLY mode; it's not valid")
+        }
+    }
+
+    def handleRegistry(final String val) {
+        log.info("Found registry $val. Creating...")
+        def reg = Registry.fromUrl(val)
+
+        if (reg) {
+            if (Registry.findByHostAndApiVersion(reg.host, reg.apiVersion)) {
+                log.info("Not creating registry ${val} as it already exists")
+            } else {
+                log.info("Registry ${reg} doesn't exist; saving")
+                reg.save()
+            }
+
+            if (!reg.ping()) {
+                log.warn("Registry '${reg.toUrl()}' ping failed! Check it's up!")
+            }
+
+        } else {
+            log.error("Couldn't parse valid registry URL from $val")
+        }
+    }
+
     def destroy = {
     }
 }

grails-app/conf/UrlMappings.groovy

@@ -10,5 +10,6 @@ class UrlMappings {
         "/"(view:"/index")
         "/about"(view:"/about")
         "500"(view:'/error')
+        "403"(view:'/forbidden')
 	}
 }

grails-app/conf/docker/registry/ui/SettingFilters.groovy

@@ -0,0 +1,20 @@
+package docker.registry.ui
+import docker.registry.web.Setting
+
+class SettingFilters {
+
+    def filters = {
+        all(controller: '*', action: 'save|update|delete|edit') {
+            before = {
+                def setting = Setting.findByName("READ_ONLY")
+                if (setting?.value) {
+                    log.info("Read only mode is enabled; rejecting request")
+                    response.status = 403
+                    flash.message = "Read only mode enabled. Save, edit and update actions are prohibited" //FIXME externalise
+                    render(view:'/forbidden')
+                    return false
+                }
+            }
+        }
+    }
+}

grails-app/domain/docker/registry/web/Setting.groovy

@@ -3,7 +3,6 @@ package docker.registry.web
 class Setting {
 
     String name
-    String description
     String value
 
     static constraints = {

grails-app/i18n/messages.properties

@@ -90,3 +90,4 @@ labels.registry.host=Hostname
 labels.registry.port=Port
 labels.registry.username=Username
 labels.registry.password=Password
+image.delete.prohibited=Delete prohibited. Is read only mode enabled?

grails-app/i18n/messages_cs_CZ.properties

@@ -88,3 +88,4 @@ labels.registry.host=Hostname
 labels.registry.port=Port
 labels.registry.username=Username
 labels.registry.password=Password
+image.delete.prohibited=Delete prohibited. Is read only mode enabled?

grails-app/i18n/messages_da.properties

@@ -88,4 +88,5 @@ labels.registry.host=Hostname
 labels.registry.port=Port
 labels.registry.username=Username
 labels.registry.password=Password
+image.delete.prohibited=Delete prohibited. Is read only mode enabled?