X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/62b3629a76473ae3846860362923b2e180c42e08..5624fec61db977d386ce03ca333241c74ca251b5:/services/api/app/models/collection.rb

diff --git a/services/api/app/models/collection.rb b/services/api/app/models/collection.rb
index df969e3315..9b081dbd2e 100644
--- a/services/api/app/models/collection.rb
+++ b/services/api/app/models/collection.rb
@@ -1,6 +1,8 @@
 require 'arvados/keep'
+require 'sweep_trashed_collections'
 
 class Collection < ArvadosModel
+  extend CurrentApiClient
   extend DbCurrentTime
   include HasUuid
   include KindAndEtag
@@ -8,17 +10,21 @@ class Collection < ArvadosModel
 
   serialize :properties, Hash
 
+  before_validation :set_validation_timestamp
   before_validation :default_empty_manifest
   before_validation :check_encoding
   before_validation :check_manifest_validity
   before_validation :check_signatures
   before_validation :strip_signatures_and_update_replication_confirmed
+  before_validation :ensure_trash_at_not_in_past
+  before_validation :sync_trash_state
+  before_validation :default_trash_interval
   validate :ensure_pdh_matches_manifest_text
+  validate :validate_trash_and_delete_timing
   before_save :set_file_names
-  before_save :expires_at_not_in_past
 
-  # Query only undeleted collections by default.
-  default_scope where("expires_at IS NULL or expires_at > statement_timestamp()")
+  # Query only untrashed collections by default.
+  default_scope where("is_trashed = false")
 
   api_accessible :user, extend: :common do |t|
     t.add :name
@@ -26,10 +32,18 @@ class Collection < ArvadosModel
     t.add :properties
     t.add :portable_data_hash
     t.add :signed_manifest_text, as: :manifest_text
+    t.add :manifest_text, as: :unsigned_manifest_text
     t.add :replication_desired
     t.add :replication_confirmed
     t.add :replication_confirmed_at
-    t.add :expires_at
+    t.add :delete_at
+    t.add :trash_at
+    t.add :is_trashed
+  end
+
+  after_initialize do
+    @signatures_checked = false
+    @computed_pdh_for_manifest_text = false
   end
 
   def self.attributes_required_columns
@@ -39,10 +53,18 @@ class Collection < ArvadosModel
                 # expose signed_manifest_text as manifest_text in the
                 # API response, and never let clients select the
                 # manifest_text column.
-                'manifest_text' => ['manifest_text'],
+                #
+                # We need trash_at and is_trashed to determine the
+                # correct timestamp in signed_manifest_text.
+                'manifest_text' => ['manifest_text', 'trash_at', 'is_trashed'],
+                'unsigned_manifest_text' => ['manifest_text'],
                 )
   end
 
+  def self.ignored_select_attributes
+    super + ["updated_at", "file_names"]
+  end
+
   FILE_TOKEN = /^[[:digit:]]+:[[:digit:]]+:/
   def check_signatures
     return false if self.manifest_text.nil?
@@ -54,7 +76,9 @@ class Collection < ArvadosModel
     # subsequent passes without checking any signatures. This is
     # important because the signatures have probably been stripped off
     # by the time we get to a second validation pass!
-    return true if @signatures_checked and @signatures_checked == computed_pdh
+    if @signatures_checked && @signatures_checked == computed_pdh
+      return true
+    end
 
     if self.manifest_text_changed?
       # Check permissions on the collection manifest.
@@ -63,7 +87,7 @@ class Collection < ArvadosModel
       api_token = current_api_client_authorization.andand.api_token
       signing_opts = {
         api_token: api_token,
-        now: db_current_time.to_i,
+        now: @validation_timestamp.to_i,
       }
       self.manifest_text.each_line do |entry|
         entry.split.each do |tok|
@@ -190,7 +214,7 @@ class Collection < ArvadosModel
         utf8 = manifest_text
         utf8.force_encoding Encoding::UTF_8
         if utf8.valid_encoding? and utf8 == manifest_text.encode(Encoding::UTF_8)
-          manifest_text = utf8
+          self.manifest_text = utf8
           return true
         end
       rescue
@@ -211,16 +235,25 @@ class Collection < ArvadosModel
   end
 
   def signed_manifest_text
-    if has_attribute? :manifest_text
+    if !has_attribute? :manifest_text
+      return nil
+    elsif is_trashed
+      return manifest_text
+    else
       token = current_api_client_authorization.andand.api_token
-      @signed_manifest_text = self.class.sign_manifest manifest_text, token
+      exp = [db_current_time.to_i + Rails.configuration.blob_signature_ttl,
+             trash_at].compact.map(&:to_i).min
+      self.class.sign_manifest manifest_text, token, exp
     end
   end
 
-  def self.sign_manifest manifest, token
+  def self.sign_manifest manifest, token, exp=nil
+    if exp.nil?
+      exp = db_current_time.to_i + Rails.configuration.blob_signature_ttl
+    end
     signing_opts = {
       api_token: token,
-      expire: db_current_time.to_i + Rails.configuration.blob_signature_ttl,
+      expire: exp,
     }
     m = munge_manifest_locators(manifest) do |match|
       Blob.sign_locator(match[0], signing_opts)
@@ -271,10 +304,10 @@ class Collection < ArvadosModel
     hash_part = nil
     size_part = nil
     uuid.split('+').each do |token|
-      if token.match /^[0-9a-f]{32,}$/
+      if token.match(/^[0-9a-f]{32,}$/)
         raise "uuid #{uuid} has multiple hash parts" if hash_part
         hash_part = token
-      elsif token.match /^\d+$/
+      elsif token.match(/^\d+$/)
         raise "uuid #{uuid} has multiple size parts" if size_part
         size_part = token
       end
@@ -302,7 +335,7 @@ class Collection < ArvadosModel
         # looks like a saved Docker image.
         manifest = Keep::Manifest.new(coll_match.manifest_text)
         if manifest.exact_file_count?(1) and
-            (manifest.files[0][1] =~ /^[0-9A-Fa-f]{64}\.tar$/)
+            (manifest.files[0][1] =~ /^(sha256:)?[0-9A-Fa-f]{64}\.tar$/)
           return [coll_match]
         end
       end
@@ -340,6 +373,23 @@ class Collection < ArvadosModel
     find_all_for_docker_image(search_term, search_tag, readers).first
   end
 
+  # If the given pdh is an old-format docker image, old-format images
+  # aren't supported by the compute nodes according to site config,
+  # and a migrated new-format image is available, return the migrated
+  # image's pdh. Otherwise, just return pdh.
+  def self.docker_migration_pdh(read_users, pdh)
+    if Rails.configuration.docker_image_formats.include?('v1')
+      return pdh
+    end
+    Collection.readable_by(*read_users).
+      joins('INNER JOIN links ON head_uuid=portable_data_hash').
+      where('tail_uuid=? AND link_class=? AND links.owner_uuid=?',
+            pdh, 'docker_image_migration', system_user_uuid).
+      order('links.created_at desc').
+      select('portable_data_hash').
+      first.andand.portable_data_hash || pdh
+  end
+
   def self.searchable_columns operator
     super - ["manifest_text"]
   end
@@ -348,6 +398,11 @@ class Collection < ArvadosModel
     super - ["manifest_text"]
   end
 
+  def self.where *args
+    SweepTrashedCollections.sweep_if_stale
+    super
+  end
+
   protected
   def portable_manifest_text
     self.class.munge_manifest_locators(manifest_text) do |match|
@@ -384,13 +439,65 @@ class Collection < ArvadosModel
     super
   end
 
-  # If expires_at is being changed to a time in the past, change it to
+  # Use a single timestamp for all validations, even though each
+  # validation runs at a different time.
+  def set_validation_timestamp
+    @validation_timestamp = db_current_time
+  end
+
+  # If trash_at is being changed to a time in the past, change it to
   # now. This allows clients to say "expires {client-current-time}"
   # without failing due to clock skew, while avoiding odd log entries
   # like "expiry date changed to {1 year ago}".
-  def expires_at_not_in_past
-    if expires_at_changed? and expires_at
-      self.expires_at = [db_current_time, expires_at].max
+  def ensure_trash_at_not_in_past
+    if trash_at_changed? && trash_at
+      self.trash_at = [@validation_timestamp, trash_at].max
     end
   end
+
+  # Caller can move into/out of trash by setting/clearing is_trashed
+  # -- however, if the caller also changes trash_at, then any changes
+  # to is_trashed are ignored.
+  def sync_trash_state
+    if is_trashed_changed? && !trash_at_changed?
+      if is_trashed
+        self.trash_at = @validation_timestamp
+      else
+        self.trash_at = nil
+        self.delete_at = nil
+      end
+    end
+    self.is_trashed = trash_at && trash_at <= @validation_timestamp || false
+    true
+  end
+
+  # If trash_at is updated without touching delete_at, automatically
+  # update delete_at to a sensible value.
+  def default_trash_interval
+    if trash_at_changed? && !delete_at_changed?
+      if trash_at.nil?
+        self.delete_at = nil
+      else
+        self.delete_at = trash_at + Rails.configuration.default_trash_lifetime.seconds
+      end
+    end
+  end
+
+  def validate_trash_and_delete_timing
+    if trash_at.nil? != delete_at.nil?
+      errors.add :delete_at, "must be set if trash_at is set, and must be nil otherwise"
+    end
+
+    earliest_delete = ([@validation_timestamp, trash_at_was].compact.min +
+                       Rails.configuration.blob_signature_ttl.seconds)
+    if delete_at && delete_at < earliest_delete
+      errors.add :delete_at, "#{delete_at} is too soon: earliest allowed is #{earliest_delete}"
+    end
+
+    if delete_at && delete_at < trash_at
+      errors.add :delete_at, "must not be earlier than trash_at"
+    end
+
+    true
+  end
 end