Remove redundant presence validation on belongs_to

[rails.git] / app / models / trace.rb

diff --git a/app/models/trace.rb b/app/models/trace.rb
index 582c7285cd95e7e02147dbf8697b51450e167992..f2d81e31aa861f7d700cb546f680af906e1d4a5f 100644 (file)
--- a/app/models/trace.rb
+++ b/app/models/trace.rb
@@ -1,43 +1,87 @@
-class Trace < ActiveRecord::Base
-  set_table_name 'gpx_files'
-
-  validates_presence_of :user_id, :name, :timestamp
-  validates_presence_of :description, :on => :create
-  validates_length_of :name, :maximum => 255
-  validates_length_of :description, :maximum => 255
-#  validates_numericality_of :latitude, :longitude
-  validates_inclusion_of :inserted, :in => [ true, false ]
-  validates_inclusion_of :visibility, :in => ["private", "public", "trackable", "identifiable"]
-
-  belongs_to :user
-  has_many :tags, :class_name => 'Tracetag', :foreign_key => 'gpx_id', :dependent => :delete_all
-  has_many :points, :class_name => 'Tracepoint', :foreign_key => 'gpx_id', :dependent => :delete_all
-
-  def destroy
-    super
-    FileUtils.rm_f(trace_name)
-    FileUtils.rm_f(icon_picture_name)
-    FileUtils.rm_f(large_picture_name)
-  end
+# == Schema Information
+#
+# Table name: gpx_files
+#
+#  id          :bigint(8)        not null, primary key
+#  user_id     :bigint(8)        not null
+#  visible     :boolean          default(TRUE), not null
+#  name        :string           default(""), not null
+#  size        :bigint(8)
+#  latitude    :float
+#  longitude   :float
+#  timestamp   :datetime         not null
+#  description :string           default(""), not null
+#  inserted    :boolean          not null
+#  visibility  :enum             default("public"), not null
+#
+# Indexes
+#
+#  gpx_files_timestamp_idx           (timestamp)
+#  gpx_files_user_id_idx             (user_id)
+#  gpx_files_visible_visibility_idx  (visible,visibility)
+#
+# Foreign Keys
+#
+#  gpx_files_user_id_fkey  (user_id => users.id)
+#
+
+class Trace < ApplicationRecord
+  require "open3"
+
+  self.table_name = "gpx_files"
+
+  belongs_to :user, :counter_cache => true
+  has_many :tags, :class_name => "Tracetag", :foreign_key => "gpx_id", :dependent => :delete_all, :inverse_of => :trace
+  has_many :points, :class_name => "Tracepoint", :foreign_key => "gpx_id", :dependent => :delete_all, :inverse_of => :trace
+
+  scope :visible, -> { where(:visible => true) }
+  scope :visible_to, ->(u) { visible.where("visibility IN ('public', 'identifiable') OR user_id = ?", u) }
+  scope :visible_to_all, -> { where(:visibility => %w[public identifiable]) }
+  scope :tagged, ->(t) { joins(:tags).where(:gpx_file_tags => { :tag => t }) }
+
+  has_one_attached :file, :service => Settings.trace_file_storage
+  has_one_attached :image, :service => Settings.trace_image_storage
+  has_one_attached :icon, :service => Settings.trace_icon_storage
+
+  validates :user, :associated => true
+  validates :name, :presence => true, :length => 1..255, :characters => true
+  validates :description, :presence => { :on => :create }, :length => 1..255, :characters => true
+  validates :timestamp, :presence => true
+  validates :visibility, :inclusion => %w[private public trackable identifiable]
+
+  after_destroy :remove_files
+  after_save :set_filename

 
   def tagstring
 
   def tagstring

-    return tags.collect {|tt| tt.tag}.join(", ")
+    tags.collect(&:tag).join(", ")

   end
 
   def tagstring=(s)
   end
 
   def tagstring=(s)

-    if s.include? ','
-      self.tags = s.split(/\s*,\s*/).select {|tag| tag !~ /^\s*$/}.collect {|tag|
-        tt = Tracetag.new
-        tt.tag = tag
-        tt
-      }
+    self.tags = if s.include? ","
+                  s.split(/\s*,\s*/).grep_v(/^\s*$/).collect do |tag|
+                    tt = Tracetag.new
+                    tt.tag = tag
+                    tt
+                  end
+                else
+                  # do as before for backwards compatibility:
+                  s.split.collect do |tag|
+                    tt = Tracetag.new
+                    tt.tag = tag
+                    tt
+                  end
+                end
+  end
+
+  def file=(attachable)
+    case attachable
+    when ActionDispatch::Http::UploadedFile, Rack::Test::UploadedFile
+      super(:io => attachable,
+            :filename => attachable.original_filename,
+            :content_type => content_type(attachable.path),
+            :identify => false)

     else
     else

-      #do as before for backwards compatibility:
-      self.tags = s.split().collect {|tag|
-        tt = Tracetag.new
-        tt.tag = tag
-        tt
-      }
+      super(attachable)

     end
   end
 
     end
   end
 


@@ -53,258 +97,260 @@ class Trace < ActiveRecord::Base
     visibility == "identifiable"
   end
 
     visibility == "identifiable"
   end
 

-  def large_picture= (data)
-    f = File.new(large_picture_name, "wb")
-    f.syswrite(data)
-    f.close
-  end
-  
-  def icon_picture= (data)
-    f = File.new(icon_picture_name, "wb")
-    f.syswrite(data)
-    f.close
-  end
-

   def large_picture
   def large_picture

-    f = File.new(large_picture_name, "rb")
-    logger.info "large picture file: '#{f.path}', bytes: #{File.size(f.path)}"
-    data = f.sysread(File.size(f.path))
-    logger.info "have read data, bytes: '#{data.length}'"
-    f.close
+    if image.attached?
+      data = image.blob.download
+    else
+      f = File.new(large_picture_name, "rb")
+      data = f.sysread(File.size(f.path))
+      f.close
+    end
+

     data
   end
     data
   end

-  
+

   def icon_picture
   def icon_picture

-    f = File.new(icon_picture_name, "rb")
-    logger.info "icon picture file: '#{f.path}'"
-    data = f.sysread(File.size(f.path))
-    f.close
+    if icon.attached?
+      data = icon.blob.download
+    else
+      f = File.new(icon_picture_name, "rb")
+      data = f.sysread(File.size(f.path))
+      f.close
+    end
+

     data
   end
     data
   end

-  
+

   def large_picture_name
   def large_picture_name

-    "#{GPX_IMAGE_DIR}/#{id}.gif"
+    "#{Settings.gpx_image_dir}/#{id}.gif"

   end
 
   def icon_picture_name
   end
 
   def icon_picture_name

-    "#{GPX_IMAGE_DIR}/#{id}_icon.gif"
+    "#{Settings.gpx_image_dir}/#{id}_icon.gif"

   end
 
   def trace_name
   end
 
   def trace_name

-    "#{GPX_TRACE_DIR}/#{id}.gpx"
+    "#{Settings.gpx_trace_dir}/#{id}.gpx"

   end
 
   def mime_type
   end
 
   def mime_type

-    filetype = `/usr/bin/file -bz #{trace_name}`.chomp
-    gzipped = filetype =~ /gzip compressed/
-    bzipped = filetype =~ /bzip2 compressed/
-    zipped = filetype =~ /Zip archive/
-
-    if gzipped then
-      mimetype = "application/x-gzip"
-    elsif bzipped then
-      mimetype = "application/x-bzip2"
-    elsif zipped
-      mimetype = "application/x-zip"
+    if file.attached?
+      file.content_type

     else
     else

-      mimetype = "text/xml"
+      content_type(trace_name)

     end
     end

-
-    return mimetype

   end
 
   def extension_name
   end
 
   def extension_name

-    filetype = `/usr/bin/file -bz #{trace_name}`.chomp
-    gzipped = filetype =~ /gzip compressed/
-    bzipped = filetype =~ /bzip2 compressed/
-    zipped = filetype =~ /Zip archive/
-    tarred = filetype =~ /tar archive/
-
-    if tarred and gzipped then
-      extension = ".tar.gz"
-    elsif tarred and bzipped then
-      extension = ".tar.bz2"
-    elsif tarred
-      extension = ".tar"
-    elsif gzipped
-      extension = ".gpx.gz"
-    elsif bzipped
-      extension = ".gpx.bz2"
-    elsif zipped
-      extension = ".zip"
-    else
-      extension = ".gpx"
+    case mime_type
+    when "application/x-tar+gzip" then ".tar.gz"
+    when "application/x-tar+x-bzip2" then ".tar.bz2"
+    when "application/x-tar" then ".tar"
+    when "application/zip" then ".zip"
+    when "application/gzip" then ".gpx.gz"
+    when "application/x-bzip2" then ".gpx.bz2"
+    else ".gpx"

     end
     end

-
-    return extension

   end
 
   end
 

-  def to_xml
-    doc = OSM::API.new.get_xml_doc
-    doc.root << to_xml_node()
-    return doc
-  end
-
-  def to_xml_node
-    el1 = XML::Node.new 'gpx_file'
-    el1['id'] = self.id.to_s
-    el1['name'] = self.name.to_s
-    el1['lat'] = self.latitude.to_s if self.inserted
-    el1['lon'] = self.longitude.to_s if self.inserted
-    el1['user'] = self.user.display_name
-    el1['visibility'] = self.visibility
-    el1['pending'] = (!self.inserted).to_s
-    el1['timestamp'] = self.timestamp.xmlschema
-
-    el2 = XML::Node.new 'description'
-    el2 << self.description
-    el1 << el2
-
-    self.tags.each do |tag|
-      el2 = XML::Node.new('tag')
-      el2 << tag.tag
-      el1 << el2
-    end
-
-    return el1
-  end
-
-  # Read in xml as text and return it's Node object representation
-  def self.from_xml(xml, create=false)
-    begin
-      p = XML::Parser.string(xml)
-      doc = p.parse
-
-      doc.find('//osm/gpx_file').each do |pt|
-        return Trace.from_xml_node(pt, create)
-      end
+  def update_from_xml(xml, create: false)
+    p = XML::Parser.string(xml, :options => XML::Parser::Options::NOERROR)
+    doc = p.parse
+    pt = doc.find_first("//osm/gpx_file")

 
 

+    if pt
+      update_from_xml_node(pt, :create => create)
+    else

       raise OSM::APIBadXMLError.new("trace", xml, "XML doesn't contain an osm/gpx_file element.")
       raise OSM::APIBadXMLError.new("trace", xml, "XML doesn't contain an osm/gpx_file element.")

-    rescue LibXML::XML::Error, ArgumentError => ex
-      raise OSM::APIBadXMLError.new("trace", xml, ex.message)

     end
     end

+  rescue LibXML::XML::Error, ArgumentError => e
+    raise OSM::APIBadXMLError.new("trace", xml, e.message)

   end
 
   end
 

-  def self.from_xml_node(pt, create=false)
-    trace = Trace.new
-    
-    raise OSM::APIBadXMLError.new("trace", pt, "visibility missing") if pt['visibility'].nil?
-    trace.visibility = pt['visibility']
+  def update_from_xml_node(pt, create: false)
+    raise OSM::APIBadXMLError.new("trace", pt, "visibility missing") if pt["visibility"].nil?
+
+    self.visibility = pt["visibility"]

 
     unless create
 
     unless create

-      raise OSM::APIBadXMLError.new("trace", pt, "ID is required when updating.") if pt['id'].nil?
-      trace.id = pt['id'].to_i
-      # .to_i will return 0 if there is no number that can be parsed. 
+      raise OSM::APIBadXMLError.new("trace", pt, "ID is required when updating.") if pt["id"].nil?
+
+      id = pt["id"].to_i
+      # .to_i will return 0 if there is no number that can be parsed.

       # We want to make sure that there is no id with zero anyway
       # We want to make sure that there is no id with zero anyway

-      raise OSM::APIBadUserInput.new("ID of trace cannot be zero when updating.") if trace.id == 0
+      raise OSM::APIBadUserInput, "ID of trace cannot be zero when updating." if id.zero?
+      raise OSM::APIBadUserInput, "The id in the url (#{self.id}) is not the same as provided in the xml (#{id})" unless self.id == id

     end
 
     # We don't care about the time, as it is explicitly set on create/update/delete
     # We don't care about the visibility as it is implicit based on the action
     # and set manually before the actual delete
     end
 
     # We don't care about the time, as it is explicitly set on create/update/delete
     # We don't care about the visibility as it is implicit based on the action
     # and set manually before the actual delete

-    trace.visible = true
+    self.visible = true

 
 

-    description = pt.find('description').first
+    description = pt.find("description").first

     raise OSM::APIBadXMLError.new("trace", pt, "description missing") if description.nil?
     raise OSM::APIBadXMLError.new("trace", pt, "description missing") if description.nil?

-    trace.description = description.content

 
 

-    pt.find('tag').each do |tag|
-      trace.tags.build(:tag => tag.content)
-    end
+    self.description = description.content

 
 

-    return trace
+    self.tags = pt.find("tag").collect do |tag|
+      Tracetag.new(:tag => tag.content)
+    end

   end
 
   def xml_file
   end
 
   def xml_file

-    # TODO *nix specific, could do to work on windows... would be functionally inferior though - check for '.gz'
-    filetype = `/usr/bin/file -bz #{trace_name}`.chomp
-    gzipped = filetype =~ /gzip compressed/
-    bzipped = filetype =~ /bzip2 compressed/
-    zipped = filetype =~ /Zip archive/
-    tarred = filetype =~ /tar archive/
-
-    if gzipped or bzipped or zipped or tarred then
-      tmpfile = Tempfile.new("trace.#{id}");
-
-      if tarred and gzipped then
-        system("tar -zxOf #{trace_name} > #{tmpfile.path}")
-      elsif tarred and bzipped then
-        system("tar -jxOf #{trace_name} > #{tmpfile.path}")
-      elsif tarred
-        system("tar -xOf #{trace_name} > #{tmpfile.path}")
-      elsif gzipped
-        system("gunzip -c #{trace_name} > #{tmpfile.path}")
-      elsif bzipped
-        system("bunzip2 -c #{trace_name} > #{tmpfile.path}")
-      elsif zipped
-        system("unzip -p #{trace_name} -x '__MACOSX/*' > #{tmpfile.path}")
+    with_trace_file do |trace_name|
+      filetype = Open3.capture2("/usr/bin/file", "-Lbz", trace_name).first.chomp
+      gzipped = filetype.include?("gzip compressed")
+      bzipped = filetype.include?("bzip2 compressed")
+      zipped = filetype.include?("Zip archive")
+      tarred = filetype.include?("tar archive")
+
+      if gzipped || bzipped || zipped || tarred
+        file = Tempfile.new("trace.#{id}")
+
+        if tarred && gzipped
+          system("tar", "-zxOf", trace_name, :out => file.path)
+        elsif tarred && bzipped
+          system("tar", "-jxOf", trace_name, :out => file.path)
+        elsif tarred
+          system("tar", "-xOf", trace_name, :out => file.path)
+        elsif gzipped
+          system("gunzip", "-c", trace_name, :out => file.path)
+        elsif bzipped
+          system("bunzip2", "-c", trace_name, :out => file.path)
+        elsif zipped
+          system("unzip", "-p", trace_name, "-x", "__MACOSX/*", :out => file.path, :err => "/dev/null")
+        end
+
+        file.unlink
+      else
+        file = File.open(trace_name)

       end
 
       end
 

-      tmpfile.unlink
-
-      file = tmpfile.file
-    else
-      file = File.open(trace_name)
+      file

     end
     end

-
-    return file

   end
 
   def import
     logger.info("GPX Import importing #{name} (#{id}) from #{user.email}")
 
   end
 
   def import
     logger.info("GPX Import importing #{name} (#{id}) from #{user.email}")
 

-    gpx = GPX::File.new(self.xml_file)
+    with_trace_file do |trace_name|
+      gpx = GPX::File.new(trace_name)
+
+      f_lat = 0
+      f_lon = 0
+      first = true
+
+      # If there are any existing points for this trace then delete them
+      Tracepoint.where(:gpx_id => id).delete_all
+
+      gpx.points.each_slice(1_000) do |points|
+        # Gather the trace points together for a bulk import
+        tracepoints = []
+
+        points.each do |point|
+          if first
+            f_lat = point.latitude
+            f_lon = point.longitude
+            first = false
+          end
+
+          tp = Tracepoint.new
+          tp.lat = point.latitude
+          tp.lon = point.longitude
+          tp.altitude = point.altitude
+          tp.timestamp = point.timestamp
+          tp.gpx_id = id
+          tp.trackid = point.segment
+          tracepoints << tp
+        end
+
+        # Run the before_save and before_create callbacks, and then import them in bulk with activerecord-import
+        tracepoints.each do |tp|
+          tp.run_callbacks(:save) { false }
+          tp.run_callbacks(:create) { false }
+        end
+
+        Tracepoint.import!(tracepoints)
+      end
+
+      if gpx.actual_points.positive?
+        max_lat = Tracepoint.where(:gpx_id => id).maximum(:latitude)
+        min_lat = Tracepoint.where(:gpx_id => id).minimum(:latitude)
+        max_lon = Tracepoint.where(:gpx_id => id).maximum(:longitude)
+        min_lon = Tracepoint.where(:gpx_id => id).minimum(:longitude)
+
+        max_lat = max_lat.to_f / 10000000
+        min_lat = min_lat.to_f / 10000000
+        max_lon = max_lon.to_f / 10000000
+        min_lon = min_lon.to_f / 10000000
+
+        self.latitude = f_lat
+        self.longitude = f_lon
+        image.attach(:io => gpx.picture(min_lat, min_lon, max_lat, max_lon, gpx.actual_points), :filename => "#{id}.gif", :content_type => "image/gif")
+        icon.attach(:io => gpx.icon(min_lat, min_lon, max_lat, max_lon), :filename => "#{id}_icon.gif", :content_type => "image/gif")
+        self.size = gpx.actual_points
+        self.inserted = true
+        save!
+      end
+
+      logger.info "done trace #{id}"

 
 

-    f_lat = 0
-    f_lon = 0
-    first = true
+      gpx
+    end
+  end

 
 

-    # If there are any existing points for this trace then delete
-    # them - we check for existing points first to avoid locking
-    # the table in the common case where there aren't any.
-    if Tracepoint.find(:first, :conditions => ['gpx_id = ?', self.id])
-      Tracepoint.delete_all(['gpx_id = ?', self.id])
+  def migrate_to_storage!
+    file.attach(:io => File.open(trace_name),
+                :filename => name,
+                :content_type => content_type(trace_name),
+                :identify => false)
+
+    if inserted
+      image.attach(:io => File.open(large_picture_name),
+                   :filename => "#{id}.gif",
+                   :content_type => "image/gif")
+      icon.attach(:io => File.open(icon_picture_name),
+                  :filename => "#{id}_icon.gif",
+                  :content_type => "image/gif")

     end
 
     end
 

-    gpx.points do |point|
-      if first
-        f_lat = point.latitude
-        f_lon = point.longitude
-        first = false
-      end
+    save!

 
 

-      tp = Tracepoint.new
-      tp.lat = point.latitude
-      tp.lon = point.longitude
-      tp.altitude = point.altitude
-      tp.timestamp = point.timestamp
-      tp.gpx_id = id
-      tp.trackid = point.segment
-      tp.save!
+    remove_files
+  end
+
+  private
+
+  def content_type(file)
+    case Open3.capture2("/usr/bin/file", "-Lbz", file).first.chomp
+    when /.*\btar archive\b.*\bgzip\b/ then "application/x-tar+gzip"
+    when /.*\btar archive\b.*\bbzip2\b/ then "application/x-tar+x-bzip2"
+    when /.*\btar archive\b/ then "application/x-tar"
+    when /.*\bZip archive\b/ then "application/zip"
+    when /.*\bXML\b.*\bgzip\b/ then "application/gzip"
+    when /.*\bXML\b.*\bbzip2\b/ then "application/x-bzip2"
+    else "application/gpx+xml"

     end
     end

+  end

 
 

-    if gpx.actual_points > 0
-      max_lat = Tracepoint.maximum('latitude', :conditions => ['gpx_id = ?', id])
-      min_lat = Tracepoint.minimum('latitude', :conditions => ['gpx_id = ?', id])
-      max_lon = Tracepoint.maximum('longitude', :conditions => ['gpx_id = ?', id])
-      min_lon = Tracepoint.minimum('longitude', :conditions => ['gpx_id = ?', id])
-
-      max_lat = max_lat.to_f / 10000000
-      min_lat = min_lat.to_f / 10000000
-      max_lon = max_lon.to_f / 10000000
-      min_lon = min_lon.to_f / 10000000
-
-      self.latitude = f_lat
-      self.longitude = f_lon
-      self.large_picture = gpx.picture(min_lat, min_lon, max_lat, max_lon, gpx.actual_points)
-      self.icon_picture = gpx.icon(min_lat, min_lon, max_lat, max_lon)
-      self.size = gpx.actual_points
-      self.inserted = true
-      self.save!
+  def with_trace_file
+    if file.attached?
+      file.open do |file|
+        yield file.path
+      end
+    else
+      yield trace_name

     end
     end

+  end

 
 

-    logger.info "done trace #{id}"
+  def set_filename
+    file.blob.update(:filename => "#{id}#{extension_name}") if file.attached?
+  end

 
 

-    return gpx
+  def remove_files
+    FileUtils.rm_f(trace_name)
+    FileUtils.rm_f(icon_picture_name)
+    FileUtils.rm_f(large_picture_name)

   end
 end
   end
 end