Add support for dynamic environments

Environments that can have a URL with predefined CI variables.

app/models/ci/build.rb

@@ -83,7 +83,9 @@ module Ci
                                                 environment: build.environment,
                                                 sha: build.sha,
                                                 ref: build.ref,
-                                                tag: build.tag)
+                                                tag: build.tag,
+                                                options: build.options[:environment],
+                                                variables: variables)
           service.execute(build)
         end
       end

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
 

app/models/merge_request.rb

@@ -744,10 +744,21 @@ class MergeRequest < ActiveRecord::Base
     @pipeline ||= source_project.pipeline_for(source_branch, diff_head_sha)
   end
 
+  def all_commits_sha
+    merge_request_diffs.map(&:commits).flatten.map(&:sha).sort.uniq
+  end
+
+  def latest_pipelines
+    @latest_pipelines ||=
+      if diff_head_sha && source_project
+        source_project.pipelines.order(id: :desc).where(sha: commits_sha, ref: source_branch)
+      end
+  end
+
   def all_pipelines
     @all_pipelines ||=
       if diff_head_sha && source_project
-        source_project.pipelines.order(id: :desc).where(sha: commits_sha, ref: source_branch)
+        source_project.pipelines.order(id: :desc).where(sha: all_commits_sha, ref: source_branch)
       end
   end
 

app/services/create_deployment_service.rb

@@ -3,9 +3,13 @@ require_relative 'base_service'
 class CreateDeploymentService < BaseService
   def execute(deployable = nil)
     environment = project.environments.find_or_create_by(
-      name: params[:environment]
+      name: expanded_name
     )
 
+    if expanded_url
+      environment.external_url = expanded_url
+    end
+
     project.deployments.create(
       environment: environment,
       ref: params[:ref],
@@ -15,4 +19,32 @@ class CreateDeploymentService < BaseService
       deployable: deployable
     )
   end
+
+  private
+
+  def expanded_name
+    name.expand_variables(variables)
+  end
+
+  def expanded_url
+    return unless url
+
+    @expanded_url ||= url.expand_variables(variables)
+  end
+
+  def name
+    params[:environment]
+  end
+
+  def url
+    options[:url]
+  end
+
+  def options
+    params[:environment] || {}
+  end
+
+  def variables
+    params[:variables] || []
+  end
 end

db/migrate/20160907131111_add_environment_type_to_environments.rb

@@ -0,0 +1,29 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddEnvironmentTypeToEnvironments < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  # When a migration requires downtime you **must** uncomment the following
+  # constant and define a short and easy to understand explanation as to why the
+  # migration requires downtime.
+  # DOWNTIME_REASON = ''
+
+  # When using the methods "add_concurrent_index" or "add_column_with_default"
+  # you must disable the use of transactions as these methods can not run in an
+  # existing transaction. When using "add_concurrent_index" make sure that this
+  # method is the _only_ method called in the migration, any other changes
+  # should go in a separate migration. This ensures that upon failure _only_ the
+  # index creation fails and can be retried or reverted easily.
+  #
+  # To disable transactions uncomment the following line and remove these
+  # comments:
+  # disable_ddl_transaction!
+
+  def change
+    add_column :environments, :environment_type, :string
+  end
+end

lib/expand_variables.rb

@@ -0,0 +1,15 @@
+String.instance_eval
+  def expand_variables(variables)
+    # Convert hash array to variables
+    if variables.is_a?(Array)
+      variables = variables.reduce({}) do |hash, variable|
+        hash[variable[:key]] = variable[:value]
+        hash
+      end
+    end
+
+    self.gsub(/\$([a-zA-Z_][a-zA-Z0-9_]*)|\${\g<1>}|%\g<1>%/) do
+      variables[$1 || $2]
+    end
+  end
+end

lib/gitlab/ci/config/node/environment.rb

@@ -0,0 +1,33 @@
+module Gitlab
+  module Ci
+    class Config
+      module Node
+        ##
+        # Entry that represents environment variables.
+        #
+        class Environment < Entry
+          include Validatable
+
+          validations do
+            include LegacyValidationHelpers
+
+            validate do
+              unless string_or_array_of_strings?(config)
+                errors.add(:config,
+                           'should be a string or an array of strings')
+              end
+            end
+
+            def string_or_array_of_strings?(field)
+              validate_string(field) || validate_array_of_strings(field)
+            end
+          end
+
+          def value
+            Array(@config)
+          end
+        end
+      end
+    end
+  end
+end

lib/gitlab/regex.rb

@@ -96,11 +96,11 @@ module Gitlab
     end
 
     def environment_name_regex
-      @environment_name_regex ||= /\A[a-zA-Z0-9_-]+\z/.freeze
+      git_reference_regex
     end
 
     def environment_name_regex_message
-      "can contain only letters, digits, '-' and '_'."
+      "be a valid git reference name"
     end
   end
 end