X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/3ef580c47029ff0fbf959b044f29c183f41cb609..f98e0188777b3e2d229c968824b3e64307dae4e6:/services/api/app/models/arvados_model.rb

diff --git a/services/api/app/models/arvados_model.rb b/services/api/app/models/arvados_model.rb
index 84897d04ef..b9edeae06e 100644
--- a/services/api/app/models/arvados_model.rb
+++ b/services/api/app/models/arvados_model.rb
@@ -1,10 +1,17 @@
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
+require 'arvados_model_updates'
 require 'has_uuid'
 require 'record_filters'
 require 'serializers'
+require 'request_error'
 
 class ArvadosModel < ActiveRecord::Base
   self.abstract_class = true
 
+  include ArvadosModelUpdates
   include CurrentApiClient      # current_user, current_api_client, etc.
   include DbCurrentTime
   extend RecordFilters
@@ -34,31 +41,37 @@ class ArvadosModel < ActiveRecord::Base
            class_name: 'Link',
            primary_key: :uuid)
 
-  class PermissionDeniedError < StandardError
+  class PermissionDeniedError < RequestError
     def http_status
       403
     end
   end
 
-  class AlreadyLockedError < StandardError
+  class AlreadyLockedError < RequestError
     def http_status
       422
     end
   end
 
-  class InvalidStateTransitionError < StandardError
+  class LockFailedError < RequestError
     def http_status
       422
     end
   end
 
-  class UnauthorizedError < StandardError
+  class InvalidStateTransitionError < RequestError
+    def http_status
+      422
+    end
+  end
+
+  class UnauthorizedError < RequestError
     def http_status
       401
     end
   end
 
-  class UnresolvableContainerError < StandardError
+  class UnresolvableContainerError < RequestError
     def http_status
       422
     end
@@ -98,6 +111,12 @@ class ArvadosModel < ActiveRecord::Base
     super(self.class.permit_attribute_params(raw_params), *args)
   end
 
+  # Reload "old attributes" for logging, too.
+  def reload(*args)
+    super
+    log_start_state
+  end
+
   def self.create raw_params={}, *args
     super(permit_attribute_params(raw_params), *args)
   end
@@ -184,6 +203,14 @@ class ArvadosModel < ActiveRecord::Base
     ["id", "uuid"]
   end
 
+  def self.limit_index_columns_read
+    # This method returns a list of column names.
+    # If an index request reads that column from the database,
+    # APIs that return lists will only fetch objects until reaching
+    # max_index_database_read bytes of data from those columns.
+    []
+  end
+
   # If current user can manage the object, return an array of uuids of
   # users and groups that have permission to write the object. The
   # first two elements are always [self.owner_uuid, current user's
@@ -228,48 +255,70 @@ class ArvadosModel < ActiveRecord::Base
       kwargs = {}
     end
 
-    # Check if any of the users are admin.  If so, we're done.
-    if users_list.select { |u| u.is_admin }.any?
-      return self
-    end
-
     # Collect the UUIDs of the authorized users.
+    sql_table = kwargs.fetch(:table_name, table_name)
+    include_trash = kwargs.fetch(:include_trash, false)
+
+    sql_conds = nil
     user_uuids = users_list.map { |u| u.uuid }
 
-    # Collect the UUIDs of all groups readable by any of the
-    # authorized users. If one of these (or the UUID of one of the
-    # authorized users themselves) is an object's owner_uuid, that
-    # object is readable.
-    owner_uuids = user_uuids + users_list.flat_map { |u| u.groups_i_can(:read) }
-    owner_uuids.uniq!
+    exclude_trashed_records = ""
+    if !include_trash and (sql_table == "groups" or sql_table == "collections") then
+      # Only include records that are not explicitly trashed
+      exclude_trashed_records = "AND #{sql_table}.is_trashed = false"
+    end
 
-    sql_conds = []
-    sql_table = kwargs.fetch(:table_name, table_name)
+    if users_list.select { |u| u.is_admin }.any?
+      # Admin skips most permission checks, but still want to filter on trashed items.
+      if !include_trash
+        if sql_table != "api_client_authorizations"
+          # Only include records where the owner is not trashed
+          sql_conds = "NOT EXISTS(SELECT 1 FROM #{PERMISSION_VIEW} "+
+                      "WHERE trashed = 1 AND "+
+                      "(#{sql_table}.owner_uuid = target_uuid)) #{exclude_trashed_records}"
+        end
+      end
+    else
+      trashed_check = ""
+      if !include_trash then
+        trashed_check = "AND trashed = 0"
+      end
 
-    # Match any object (evidently a group or user) whose UUID is
-    # listed explicitly in owner_uuids.
-    sql_conds += ["#{sql_table}.uuid in (:owner_uuids)"]
+      # Note: it is possible to combine the direct_check and
+      # owner_check into a single EXISTS() clause, however it turns
+      # out query optimizer doesn't like it and forces a sequential
+      # table scan.  Constructing the query with separate EXISTS()
+      # clauses enables it to use the index.
+      #
+      # see issue 13208 for details.
+
+      # Match a direct read permission link from the user to the record uuid
+      direct_check = "EXISTS(SELECT 1 FROM #{PERMISSION_VIEW} "+
+                     "WHERE user_uuid IN (:user_uuids) AND perm_level >= 1 #{trashed_check} AND target_uuid = #{sql_table}.uuid)"
+
+      # Match a read permission link from the user to the record's owner_uuid
+      owner_check = ""
+      if sql_table != "api_client_authorizations" and sql_table != "groups" then
+        owner_check = "OR EXISTS(SELECT 1 FROM #{PERMISSION_VIEW} "+
+          "WHERE user_uuid IN (:user_uuids) AND perm_level >= 1 #{trashed_check} AND target_uuid = #{sql_table}.owner_uuid AND target_owner_uuid IS NOT NULL) "
+      end
 
-    # Match any object whose owner is listed explicitly in
-    # owner_uuids.
-    sql_conds += ["#{sql_table}.owner_uuid IN (:owner_uuids)"]
+      links_cond = ""
+      if sql_table == "links"
+        # Match any permission link that gives one of the authorized
+        # users some permission _or_ gives anyone else permission to
+        # view one of the authorized users.
+        links_cond = "OR (#{sql_table}.link_class IN (:permission_link_classes) AND "+
+                       "(#{sql_table}.head_uuid IN (:user_uuids) OR #{sql_table}.tail_uuid IN (:user_uuids)))"
+      end
 
-    # Match the head of any permission link whose tail is listed
-    # explicitly in owner_uuids.
-    sql_conds += ["#{sql_table}.uuid IN (SELECT head_uuid FROM links WHERE link_class='permission' AND tail_uuid IN (:owner_uuids))"]
+      sql_conds = "(#{direct_check} #{owner_check} #{links_cond}) #{exclude_trashed_records}"
 
-    if sql_table == "links"
-      # Match any permission link that gives one of the authorized
-      # users some permission _or_ gives anyone else permission to
-      # view one of the authorized users.
-      sql_conds += ["(#{sql_table}.link_class in (:permission_link_classes) AND "+
-                    "(#{sql_table}.head_uuid IN (:user_uuids) OR #{sql_table}.tail_uuid IN (:user_uuids)))"]
     end
 
-    where(sql_conds.join(' OR '),
-          owner_uuids: owner_uuids,
-          user_uuids: user_uuids,
-          permission_link_classes: ['permission', 'resources'])
+    self.where(sql_conds,
+               user_uuids: user_uuids,
+               permission_link_classes: ['permission', 'resources'])
   end
 
   def save_with_unique_name!
@@ -329,13 +378,14 @@ class ArvadosModel < ActiveRecord::Base
 
   def self.full_text_searchable_columns
     self.columns.select do |col|
-      col.type == :string or col.type == :text
+      [:string, :text, :jsonb].include?(col.type)
     end.map(&:name)
   end
 
   def self.full_text_tsvector
     parts = full_text_searchable_columns.collect do |column|
-      "coalesce(#{column},'')"
+      cast = serialized_attributes[column] ? '::text' : ''
+      "coalesce(#{column}#{cast},'')"
     end
     "to_tsvector('english', #{parts.join(" || ' ' || ")})"
   end
@@ -491,7 +541,9 @@ class ArvadosModel < ActiveRecord::Base
     self.updated_at = current_time
     self.owner_uuid ||= current_default_owner if self.respond_to? :owner_uuid=
     self.modified_at = current_time
-    self.modified_by_user_uuid = current_user ? current_user.uuid : nil
+    if !anonymous_updater
+      self.modified_by_user_uuid = current_user ? current_user.uuid : nil
+    end
     self.modified_by_client_uuid = current_api_client ? current_api_client.uuid : nil
     true
   end
@@ -705,7 +757,7 @@ class ArvadosModel < ActiveRecord::Base
     if self == ArvadosModel
       # If called directly as ArvadosModel.find_by_uuid rather than via subclass,
       # delegate to the appropriate subclass based on the given uuid.
-      self.resource_class_for_uuid(uuid).unscoped.find_by_uuid(uuid)
+      self.resource_class_for_uuid(uuid).find_by_uuid(uuid)
     else
       super
     end