src/Gargantext/Database/Node/Document/Insert.hs

   1 {-|
   2 Module      : Gargantext.Database.Node.Document.Insert
   3 Description : Importing context of texts (documents)
   4 Copyright   : (c) CNRS, 2017-Present
   5 License     : AGPL + CECILL v3
   6 Maintainer  : team@gargantext.org
   7 Stability   : experimental
   8 Portability : POSIX
   9
  10 * Purpose of this module
  11
  12 Enabling "common goods" of text data and respecting privacy.
  13
  14 Gargantext shares as "common good" the links between context of texts
  15 and terms / words / ngrams.
  16
  17 Basically a context of text can be defined as a document (see 'Gargantext.Text').
  18
  19 Issue to tackle in that module: each global document of Gargantext has
  20 to be unique, then shared, but how to respect privacy if needed ?
  21
  22
  23 * Methodology to get uniqueness and privacy by design
  24
  25 As a consequence, when importing/inserting a new document in Gargantext,
  26 a policy for the uniqueness of the inserted docuemnts has to be defined.
  27
  28 That is the purpose of this module which defines its main concepts.
  29
  30 Unique identifier in database is of a 3-tuple of 3 policies that
  31 together define uniqueness:
  32
  33 - Design policy: type of node is needed as TypenameId, that is a
  34 Document or Individual or something else;
  35
  36 - Privacy policy: with ParentId, parent becomes unique, then it enables
  37 users to get their own copy without sharing it with all the users of the
  38 database (in others words parent_id is necessary to preserve privacy for
  39 instance).
  40
  41 - Hash policy: this UniqId is a sha256 uniq id which is the result of
  42 the concatenation of the parameters defined by @hashParameters@.
  43
  44 > -- * Example
  45 > insertTest :: FromRow r => CorpusId -> [Node HyperdataDocument] -> IO [r]
  46 > insertTest :: IO [ReturnId]
  47 > insertTest = runCmdDev $ insertDocuments 1 452162 hyperdataDocuments
  48
  49 -}
  50 ------------------------------------------------------------------------
  51 {-# LANGUAGE DeriveGeneric        #-}
  52 {-# LANGUAGE FlexibleInstances    #-}
  53 {-# LANGUAGE NoImplicitPrelude    #-}
  54 {-# LANGUAGE OverloadedStrings    #-}
  55 {-# LANGUAGE QuasiQuotes          #-}
  56 {-# LANGUAGE RankNTypes           #-}
  57 {-# LANGUAGE TypeSynonymInstances #-}
  58 ------------------------------------------------------------------------
  59 module Gargantext.Database.Node.Document.Insert where
  60
  61 import Control.Lens (set, view)
  62 import Control.Lens.Prism
  63 import Control.Lens.Cons
  64 import Data.Aeson (toJSON)
  65 import Data.Maybe (maybe)
  66 import Data.Text (Text)
  67 import Database.PostgreSQL.Simple (FromRow, Query, Only(..))
  68 import Database.PostgreSQL.Simple.FromRow (fromRow, field)
  69 import Database.PostgreSQL.Simple.SqlQQ
  70 import Database.PostgreSQL.Simple.ToField (toField, Action)
  71 import Database.PostgreSQL.Simple.Types (Values(..), QualifiedIdentifier(..))
  72 import GHC.Generics (Generic)
  73 import Gargantext.Database.Config (nodeTypeId)
  74 import Gargantext.Database.Utils (Cmd, runPGSQuery)
  75 import Gargantext.Database.Node.Contact -- (HyperdataContact(..), ContactWho(..))
  76 import Gargantext.Database.Types.Node
  77 import Gargantext.Prelude
  78 import qualified Data.ByteString.Lazy.Char8  as DC (pack)
  79 import qualified Data.Digest.Pure.SHA        as SHA (sha256, showDigest)
  80 import qualified Data.Text                   as DT (pack, unpack, concat, take)
  81 import Gargantext.Prelude.Utils (hash)
  82 -- TODO : the import of Document constructor below does not work
  83 -- import Gargantext.Database.Types.Node (Document)
  84 --import Gargantext.Database.Types.Node (docExample, hyperdataDocument, HyperdataDocument(..)
  85 --                                  , hyperdataDocument_uniqId
  86 --                                  , hyperdataDocument_title
  87 --                                  , hyperdataDocument_abstract
  88 --                                  , hyperdataDocument_source
  89 --                                  , Node(..), node_typename
  90 --                                            , node_userId
  91 --                                            , node_parentId, node_name, node_hyperdata, hyperdataDocuments
  92 --                                  , NodeTypeId
  93 --                                  )
  94 {-| To Print result query
  95 import Data.ByteString.Internal (ByteString)
  96 import Database.PostgreSQL.Simple (formatQuery)
  97 -}
  98
  99 ---------------------------------------------------------------------------
 100 -- * Main Insert functions
 101
 102 -- | Insert Document main function
 103 -- UserId : user who is inserting the documents
 104 -- ParentId : folder ID which is parent of the inserted documents
 105 -- Administrator of the database has to create a uniq index as following SQL command:
 106 -- `create unique index on nodes (typename, parent_id, (hyperdata ->> 'uniqId'));`
 107 insertDb :: InsertDb a => UserId -> ParentId -> [a] -> Cmd err [ReturnId]
 108 insertDb u p = runPGSQuery queryInsert . Only . Values fields . map (insertDb' u p)
 109       where
 110         fields    = map (\t-> QualifiedIdentifier Nothing t) inputSqlTypes
 111
 112 class InsertDb a
 113   where
 114     insertDb' :: UserId -> ParentId -> a -> [Action]
 115
 116
 117 instance InsertDb HyperdataDocument
 118   where
 119     insertDb' u p h = [ toField $ nodeTypeId NodeDocument
 120                       , toField u
 121                       , toField p
 122                       , toField $ maybe "No Title" (DT.take 255)  (_hyperdataDocument_title h)
 123                       , (toField . toJSON) h
 124                       ]
 125
 126 instance InsertDb HyperdataContact
 127   where
 128     insertDb' u p h = [ toField $ nodeTypeId NodeContact
 129                       , toField u
 130                       , toField p
 131                       , toField $ maybe "Contact" (DT.take 255) (Just "Name") -- (_hc_name h)
 132                       , (toField . toJSON) h
 133                       ]
 134
 135
 136 -- | Debug SQL function
 137 --
 138 -- to print rendered query (Debug purpose) use @formatQuery@ function.
 139 {-
 140 insertDocuments_Debug :: (Hyperdata a, ToJSON a, ToRow a) => UserId -> ParentId -> [a] -> Cmd ByteString
 141 insertDocuments_Debug uId pId hs = formatPGSQuery queryInsert (Only $ Values fields inputData)
 142   where
 143     fields    = map (\t-> QualifiedIdentifier Nothing t) inputSqlTypes
 144     inputData = prepare uId pId hs
 145 -}
 146
 147
 148 -- | Input Tables: types of the tables
 149 inputSqlTypes :: [Text]
 150 inputSqlTypes = map DT.pack ["int4","int4","int4","text","jsonb"]
 151
 152 -- | SQL query to insert documents inside the database
 153 queryInsert :: Query
 154 queryInsert = [sql|
 155     WITH input_rows(typename,user_id,parent_id,name,hyperdata) AS (?)
 156     , ins AS (
 157        INSERT INTO nodes (typename,user_id,parent_id,name,hyperdata)
 158        SELECT * FROM input_rows
 159        ON CONFLICT ((hyperdata ->> 'uniqIdBdd')) DO NOTHING -- on unique index
 160        -- ON CONFLICT (typename, parent_id, (hyperdata ->> 'uniqId')) DO NOTHING -- on unique index
 161        RETURNING id,hyperdata
 162        )
 163
 164     SELECT true AS source                     -- true for 'newly inserted'
 165          , id
 166          , hyperdata ->> 'uniqId'  as doi
 167     FROM   ins
 168     UNION  ALL
 169     SELECT false AS source                    -- false for 'not inserted'
 170          , c.id
 171          , hyperdata ->> 'uniqId' as doi
 172     FROM   input_rows
 173     JOIN   nodes c USING (hyperdata);         -- columns of unique index
 174            |]
 175
 176 ------------------------------------------------------------------------
 177 -- * Main Types used
 178
 179 -- ** Return Types
 180
 181 -- | When documents are inserted
 182 -- ReturnType after insertion
 183 data ReturnId = ReturnId { reInserted :: Bool -- ^ if the document is inserted (True: is new, False: is not new)
 184                          , reId       :: NodeId  -- ^ always return the id of the document (even new or not new)
 185                                          --   this is the uniq id in the database
 186                          , reUniqId   :: Text -- ^ Hash Id with concatenation of hash parameters
 187                          } deriving (Show, Generic)
 188
 189 instance FromRow ReturnId where
 190   fromRow = ReturnId <$> field <*> field <*> field
 191
 192 ---------------------------------------------------------------------------
 193 -- * Uniqueness of document definition
 194
 195 class AddUniqId a
 196   where
 197     addUniqId :: a -> a
 198
 199 instance AddUniqId HyperdataDocument
 200   where
 201     addUniqId = addUniqIdsDoc
 202       where
 203         addUniqIdsDoc :: HyperdataDocument -> HyperdataDocument
 204         addUniqIdsDoc doc = set hyperdataDocument_uniqIdBdd (Just hashBdd)
 205                           $ set hyperdataDocument_uniqId    (Just hashUni) doc
 206           where
 207             hashUni = hash $ DT.concat $ map ($ doc) hashParametersDoc
 208             hashBdd = hash $ DT.concat $ map ($ doc) ([(\d -> maybeText (_hyperdataDocument_bdd d))] <> hashParametersDoc)
 209
 210         hashParametersDoc :: [(HyperdataDocument -> Text)]
 211         hashParametersDoc = [ \d -> maybeText (_hyperdataDocument_title    d)
 212                             , \d -> maybeText (_hyperdataDocument_abstract d)
 213                             , \d -> maybeText (_hyperdataDocument_source   d)
 214                             , \d -> maybeText (_hyperdataDocument_publication_date   d)
 215                             ]
 216
 217     ---------------------------------------------------------------------------
 218 -- * Uniqueness of document definition
 219 -- TODO factorize with above (use the function below for tests)
 220
 221 instance AddUniqId HyperdataContact
 222   where
 223     addUniqId = addUniqIdsContact
 224
 225 addUniqIdsContact :: HyperdataContact -> HyperdataContact
 226 addUniqIdsContact hc = set (hc_uniqIdBdd) (Just hashBdd)
 227                      $ set (hc_uniqId   ) (Just hashUni) hc
 228   where
 229     hashUni = uniqId $ DT.concat $ map ($ hc) hashParametersContact
 230     hashBdd = uniqId $ DT.concat $ map ($ hc) ([\d -> maybeText (view hc_bdd d)] <> hashParametersContact)
 231
 232     uniqId :: Text -> Text
 233     uniqId = DT.pack . SHA.showDigest . SHA.sha256 . DC.pack . DT.unpack
 234
 235     -- | TODO add more hashparameters
 236     hashParametersContact :: [(HyperdataContact -> Text)]
 237     hashParametersContact = [ \d -> maybeText $ view (hc_who . _Just . cw_firstName) d
 238                             , \d -> maybeText $ view (hc_who . _Just . cw_lastName ) d
 239                             , \d -> maybeText $ view (hc_where . _head . cw_touch . _Just . ct_mail) d
 240                             ]
 241
 242
 243
 244 maybeText :: Maybe Text -> Text
 245 maybeText = maybe (DT.pack "") identity
 246
 247 ---------------------------------------------------------------------------