Class: Measures::ValueSetLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/measures/loading/value_set_loader.rb

Overview

Utility class for loading value sets

Class Method Summary collapse

Class Method Details

.delete_existing_vs(user, value_set_oids) ⇒ Object 



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# File 'lib/measures/loading/value_set_loader.rb', line 132

def self.delete_existing_vs(user, value_set_oids)
  get_existing_vs(user, value_set_oids).delete_all()
end

.get_existing_vs(user, value_set_oids) ⇒ Object 



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# File 'lib/measures/loading/value_set_loader.rb', line 129

def self.get_existing_vs(user, value_set_oids)
  HealthDataStandards::SVS::ValueSet.by_user(user).where(oid: {'$in'=>value_set_oids})
end

.get_value_set_models(value_set_oids, user = nil) ⇒ Object 



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# File 'lib/measures/loading/value_set_loader.rb', line 18

def self.get_value_set_models(value_set_oids, user=nil)
  HealthDataStandards::SVS::ValueSet.by_user(user).in(oid: value_set_oids)
end

.load_value_sets_from_vsac(value_sets, username, password, user = nil, overwrite = false, includeDraft = false, ticket_granting_ticket = nil, use_cache = false, measure_id = nil) ⇒ Object 



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# File 'lib/measures/loading/value_set_loader.rb', line 22

def self.load_value_sets_from_vsac(value_sets, username, password, user=nil, overwrite=false, includeDraft=false, ticket_granting_ticket=nil, use_cache=false, measure_id=nil)
  # Get a list of just the oids
  value_set_oids = value_sets.map {|value_set| value_set[:oid]}
  value_set_models = []
  from_vsac = 0
  existing_value_set_map = {}
  begin
    backup_vs = []
    if overwrite
      backup_vs = get_existing_vs(user, value_set_oids).to_a
      delete_existing_vs(user, value_set_oids)
    end
    nlm_config = APP_CONFIG["nlm"]

    errors = {}
    api = HealthDataStandards::Util::VSApiV2.new(nlm_config["ticket_url"],nlm_config["api_url"],username, password, ticket_granting_ticket)

    if use_cache
      codeset_base_dir = Measures::Loader::VALUE_SET_PATH
      FileUtils.mkdir_p(codeset_base_dir)
    end

    RestClient.proxy = ENV["http_proxy"]
    value_sets.each do |value_set|
      value_set_version = value_set[:version] ? value_set[:version] : "N/A"
      #When querying vsac via profile, the version is always set to N/A
      #As such, we can set the version to the profile.
      #However, a value_set can have a version and profile that are identical, as such the versions that are profiles are denoted as such.
      value_set_profile = (value_set[:profile] && !includeDraft) ? value_set[:profile] : nlm_config["profile"]
      value_set_profile = "Profile:#{value_set_profile}"

      query_version = ""
      if includeDraft
        query_version = "Draft-#{measure_id}"
      elsif value_set[:profile]
        query_version = value_set_profile
      else
        query_version = value_set_version
      end
      # only access the database if we don't intend on using cached values
      set = HealthDataStandards::SVS::ValueSet.where({user_id: user.id, oid: value_set[:oid], version: query_version}).first() unless use_cache
      if (includeDraft && set)
        set.delete
        set = nil
      end
      if (set)
        existing_value_set_map[set.oid] = set
      else
        vs_data = nil

        # try to access the cached result for the value set if it exists.
        cached_service_result = File.join(codeset_base_dir,"#{value_set[:oid]}.xml") if use_cache
        if (cached_service_result && File.exists?(cached_service_result))
          vs_data = File.read cached_service_result
        else
          # If includeDraft is true the latest vs are required, so the latest profile should be used.
          if includeDraft
            vs_data = api.get_valueset(value_set[:oid], include_draft: includeDraft, profile: nlm_config["profile"])
          elsif value_set[:version]
            vs_data = api.get_valueset(value_set[:oid], version: value_set[:version])
          else
            # If no version, call with profile.
            # If a profile is specified, use it.  Otherwise, use default.
            profile = value_set[:profile] ? value_set[:profile] : nlm_config["profile"]
            vs_data = api.get_valueset(value_set[:oid], profile: profile)
          end
        end
        vs_data.force_encoding("utf-8") # there are some funky unicodes coming out of the vs response that are not in ASCII as the string reports to be
        from_vsac += 1
        # write all valueset data retrieved if using a cache
        File.open(cached_service_result, 'w') {|f| f.write(vs_data) } if use_cache

        doc = Nokogiri::XML(vs_data)

        doc.root.add_namespace_definition("vs","urn:ihe:iti:svs:2008")

        vs_element = doc.at_xpath("/vs:RetrieveValueSetResponse/vs:ValueSet|/vs:RetrieveMultipleValueSetsResponse/vs:DescribedValueSet")

        if vs_element && vs_element['ID'] == value_set[:oid]
          vs_element['id'] = value_set[:oid]
          set = HealthDataStandards::SVS::ValueSet.load_from_xml(doc)
          set.user = user
          #bundle id for user should always be the same 1 user to 1 bundle
          #using this to allow cat I generation without extensive modification to HDS
          set.bundle = user.bundle if (user && user.respond_to?(:bundle))
          # As of t9/7/2017, when valuesets are retrieved from VSAC via profile, their version defaults to N/A
          # As such, we set the version to the profile with an indicator.
          set.version = query_version
          set.save!
          existing_value_set_map[set.oid] = set
        else
          raise "Value set not found: #{oid}"
        end
      end
    end
  rescue Exception => e
    if (overwrite)
      delete_existing_vs(user, value_set_oids)
      backup_vs.each {|vs| HealthDataStandards::SVS::ValueSet.new(vs.attributes).save }
    end
    raise VSACException.new "#{e.message}"
  end

  puts "\tloaded #{from_vsac} value sets from vsac" if from_vsac > 0
  existing_value_set_map.values
end

.save_value_sets(value_set_models, user = nil) ⇒ Object 



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# File 'lib/measures/loading/value_set_loader.rb', line 6

def self.save_value_sets(value_set_models, user = nil)
  #loaded_value_sets = HealthDataStandards::SVS::ValueSet.all.map(&:oid)
  value_set_models.each do |vsm|
    HealthDataStandards::SVS::ValueSet.by_user(user).where(oid: vsm.oid).delete_all()
    vsm.user = user
    #bundle id for user should always be the same 1 user to 1 bundle
    #using this to allow cat I generation without extensive modification to HDS
    vsm.bundle = user.bundle if (user && user.respond_to?(:bundle))
    vsm.save!
  end
end