Class: Uc3DmpProvenance::Finder

Inherits:
Object
  • Object
show all
Defined in:
lib/uc3-dmp-provenance/finder.rb

Overview

Helper for fetching Provenance JSON records

Class Method Summary collapse

Class Method Details

.from_lambda_cotext(identity:, client: nil, logger: nil) ⇒ Object

Get the Provenance item for the Lambda :event

Expecting the :claims hash from the requestContext portion of the :event. It should look something like this:

{
  "sub": "abcdefghijklmnopqrstuvwxyz",
  "token_use": "access",
  "scope": "https://auth.dmphub-dev.cdlib.org/dev.write",
  "auth_time": "1675895546",
  "iss": "https://cognito-idp.us-west-2.amazonaws.com/us-west-A_123456",
  "exp": "Wed Feb 08 22:42:26 UTC 2023",
  "iat": "Wed Feb 08 22:32:26 UTC 2023",
  "version": "2",
  "jti": "5d3be8a7-c595-1111-yyyy-xxxxxxxxxx",
  "client_id": "abcdefghijklmnopqrstuvwxyz"
}



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# File 'lib/uc3-dmp-provenance/finder.rb', line 30

def from_lambda_cotext(identity:, client: nil, logger: nil)
  return nil unless identity.is_a?(Hash) && !identity['iss'].nil? && !identity['client_id'].nil?

  client = client.nil? ? Uc3DmpDynamo::Client.new : client
  client_name = _cognito_client_id_to_name(claim: identity, logger:)

  resp = client.get_item(
    key: { PK: Helper.append_pk_prefix(provenance: client_name), SK: Helper::SK_PROVENANCE_PREFIX },
    logger:
  )
  resp.nil? || resp.empty? ? nil : resp
end

.from_pk(p_key:, logger: nil) ⇒ Object

Fetch the Provenance by it’s PK.

Expecting either the name (e.g. ‘dmptool` or the qualified PK (e.g. `PROVENANCE#dmptool`)



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# File 'lib/uc3-dmp-provenance/finder.rb', line 46

def from_pk(p_key:, logger: nil)
  return nil if p_key.nil?

  p_key = Helper.append_pk_prefix(provenance: p_key)
  resp = client.get_item(
    key: { PK: Helper.append_pk_prefix(provenance: p_key), SK: Helper::SK_PROVENANCE_PREFIX },
    logger:
  )
  resp.nil? || resp.empty? ? nil : resp
end