20284: Fix test and update code comment.

[arvados.git] / services / api / app / controllers / arvados / v1 / users_controller.rb

diff --git a/services/api/app/controllers/arvados/v1/users_controller.rb b/services/api/app/controllers/arvados/v1/users_controller.rb
index f4d42edf6c1891e69e644d4a0d0c86cd952a0aa1..2353f67c1a3978d611034e28e5e900cca1bcfc40 100644 (file)
--- a/services/api/app/controllers/arvados/v1/users_controller.rb
+++ b/services/api/app/controllers/arvados/v1/users_controller.rb
@@ -10,7 +10,7 @@ class Arvados::V1::UsersController < ApplicationController
     [:activate, :current, :system, :setup, :merge, :batch_update]
   skip_before_action :render_404_if_no_object, only:
     [:activate, :current, :system, :setup, :merge, :batch_update]
-  before_action :admin_required, only: [:setup, :unsetup, :update_uuid, :batch_update]
+  before_action :admin_required, only: [:setup, :unsetup, :batch_update]
 
   # Internal API used by controller to update local cache of user
   # records from LoginCluster.
@@ -29,7 +29,28 @@ class Arvados::V1::UsersController < ApplicationController
         end
       end
       if needupdate.length > 0
-        u.update_attributes!(needupdate)
+        begin
+          u.update!(needupdate)
+        rescue ActiveRecord::RecordInvalid
+          loginCluster = Rails.configuration.Login.LoginCluster
+          if u.uuid[0..4] == loginCluster && !needupdate[:username].nil?
+            local_user = User.find_by_username(needupdate[:username])
+            # The username of this record conflicts with an existing,
+            # different user record.  This can happen because the
+            # username changed upstream on the login cluster, or
+            # because we're federated with another cluster with a user
+            # by the same username.  The login cluster is the source
+            # of truth, so change the username on the conflicting
+            # record and retry the update operation.
+            if local_user.uuid != u.uuid
+              new_username = "#{needupdate[:username]}#{rand(99999999)}"
+              Rails.logger.warn("cached username '#{needupdate[:username]}' collision with user '#{local_user.uuid}' - renaming to '#{new_username}' before retrying")
+              local_user.update!({username: new_username})
+              retry
+            end
+          end
+          raise # Not the issue we're handling above
+        end
       end
       @objects << u
     end
@@ -87,7 +108,7 @@ class Arvados::V1::UsersController < ApplicationController
           collect(&:head_uuid)
         todo_uuids = required_uuids - signed_uuids
         if todo_uuids.empty?
-          @object.update_attributes is_active: true
+          @object.update is_active: true
           logger.info "User #{@object.uuid} activated"
         else
           logger.warn "User #{@object.uuid} called users.activate " +
@@ -145,13 +166,6 @@ class Arvados::V1::UsersController < ApplicationController
     show
   end
 
-  # Change UUID to a new (unused) uuid and transfer all owned/linked
-  # objects accordingly.
-  def update_uuid
-    @object.update_uuid(new_uuid: params[:new_uuid])
-    show
-  end
-
   def merge
     if (params[:old_user_uuid] || params[:new_user_uuid])
       if !current_user.andand.is_admin
@@ -261,19 +275,11 @@ class Arvados::V1::UsersController < ApplicationController
     })
   end
 
-  def self._update_uuid_requires_parameters
-    {
-      new_uuid: {
-        type: 'string', required: true,
-      },
-    }
-  end
-
   def apply_filters(model_class=nil)
     return super if @read_users.any?(&:is_admin)
     if params[:uuid] != current_user.andand.uuid
       # Non-admin index/show returns very basic information about readable users.
-      safe_attrs = ["uuid", "is_active", "email", "first_name", "last_name", "username"]
+      safe_attrs = ["uuid", "is_active", "email", "first_name", "last_name", "username", "can_write", "can_manage", "kind"]
       if @select
         @select = @select & safe_attrs
       else
@@ -281,6 +287,13 @@ class Arvados::V1::UsersController < ApplicationController
       end
       @filters += [['is_active', '=', true]]
     end
+    # This gets called from within find_object_by_uuid.
+    # find_object_by_uuid stores the original value of @select in
+    # @preserve_select, edits the value of @select, calls
+    # find_objects_for_index, then restores @select from the value
+    # of @preserve_select.  So if we want our updated value of
+    # @select here to stick, we have to set @preserve_select.
+    @preserve_select = @select
     super
   end