Merge branch 'review-apps' into 'master'

Add support for dynamic environments

Implements proposal described in https://gitlab.com/gitlab-org/gitlab-ce/issues/21971.

Specifically:
- it adds a `.gitlab-ci.yml` configuration,
- it allows environment name to have slashes,
- it allows environment names to use CI predefined variables,
- it allows to specify URL from `.gitlab-ci.yml`,
- it allows the URL to use CI predefined variables,
- it introduces `environment_type` to allow to easily group environments in the future

See merge request !6323

3 files changed, 55 insertions, 8 deletions

diff --git a/app/models/ci/build.rb b/app/models/ci/build.rb
index fb16bc06d71..d5724af4cce 100644
--- a/app/models/ci/build.rb
+++ b/app/models/ci/build.rb
@@ -79,11 +79,14 @@ module Ci
 
       after_transition any => [:success] do |build|
         if build.environment.present?
-          service = CreateDeploymentService.new(build.project, build.user,
-                                                environment: build.environment,
-                                                sha: build.sha,
-                                                ref: build.ref,
-                                                tag: build.tag)
+          service = CreateDeploymentService.new(
+            build.project, build.user,
+            environment: build.environment,
+            sha: build.sha,
+            ref: build.ref,
+            tag: build.tag,
+            options: build.options[:environment],
+            variables: build.variables)
           service.execute(build)
         end
       end
diff --git a/app/models/environment.rb b/app/models/environment.rb
index 75e6f869786..33c9abf382a 100644
--- a/app/models/environment.rb
+++ b/app/models/environment.rb
@@ -4,6 +4,7 @@ class Environment < ActiveRecord::Base
   has_many :deployments
 
   before_validation :nullify_external_url
+  before_save :set_environment_type
 
   validates :name,
             presence: true,
@@ -26,6 +27,17 @@ class Environment < ActiveRecord::Base
     self.external_url = nil if self.external_url.blank?
   end
 
+  def set_environment_type
+    names = name.split('/')
+
+    self.environment_type =
+      if names.many?
+        names.first
+      else
+        nil
+      end
+  end
+
   def includes_commit?(commit)
     return false unless last_deployment
 
diff --git a/app/services/create_deployment_service.rb b/app/services/create_deployment_service.rb
index efeb9df9527..e6667132e27 100644
--- a/app/services/create_deployment_service.rb
+++ b/app/services/create_deployment_service.rb
@@ -2,9 +2,7 @@ require_relative 'base_service'
 
 class CreateDeploymentService < BaseService
   def execute(deployable = nil)
-    environment = project.environments.find_or_create_by(
-      name: params[:environment]
-    )
+    environment = find_or_create_environment
 
     project.deployments.create(
       environment: environment,
@@ -15,4 +13,38 @@ class CreateDeploymentService < BaseService
       deployable: deployable
     )
   end
+
+  private
+
+  def find_or_create_environment
+    project.environments.find_or_create_by(name: expanded_name) do |environment|
+      environment.external_url = expanded_url
+    end
+  end
+
+  def expanded_name
+    ExpandVariables.expand(name, variables)
+  end
+
+  def expanded_url
+    return unless url
+
+    @expanded_url ||= ExpandVariables.expand(url, variables)
+  end
+
+  def name
+    params[:environment]
+  end
+
+  def url
+    options[:url]
+  end
+
+  def options
+    params[:options] || {}
+  end
+
+  def variables
+    params[:variables] || []
+  end
 end