add a tiny bit of content validation to prevent overloading database

src/indexer/database.ts

@@ -87,10 +87,13 @@ const userFsQb: QueryBuilder = {
       data_cid = EXCLUDED.data_cid,
     WHERE EXCLUDED.time > profiles.time;
         `,
-    // we do not need to fetch any data
-    dataGetter: (_dataCID) => Promise.resolve(null),
+    // we do not *need* to fetch any data
+    // however, we do fetch the first node to make sure it becomes available locally
+    // this is the place where we could fetch more specific parts of this FS
+    // to be sure to make them available on the network for later
+    dataGetter: defaultDataGetter,
     dataTransform: defaultDataTransform,
-    paramBuilder: (irCID: CID, ir: IndexRequest, dataCID: CID, _data: null) => [
+    paramBuilder: (irCID: CID, ir: IndexRequest, dataCID: CID, _data: any) => [
       // $1 index_request_cid
       irCID.toString(),
       // $2 time
@@ -133,20 +136,20 @@ const cesiumPlusProfile: QueryBuilder = {
     ir.pubkey,
     // $4 data_cid
     dataCID.toString(),
-    // $5 title
-    data.title,
-    // $6 description
-    data.description,
-    // $7 avatar
-    data.avatar?.toString(),
+    // $5 title (truncated to 128 chars)
+    data.title.substring(0,128),
+    // $6 description (truncated to 1024 chars, full version still available on IPFS)
+    data.description.substring(0,1024),
+    // $7 avatar (makes sure it is not more than a reasonable CID)
+    data.avatar?.toString().substring(0,64),
     // $8 geoloc
     data.geoPoint?.lat,
     // $9
     data.geoPoint?.lon,
-    // $10 city
-    data.city,
-    // $11 socials
-    data.socials ? JSON.stringify(data.socials) : undefined
+    // $10 city (truncated to 128 chars)
+    data.city?.toString().substring(0,128),
+    // $11 socials (json truncated to 4096 chars, full version available on IPFS, research in json is unlikely)
+    data.socials ? JSON.stringify(data.socials).substring(0,4096) : undefined
   ]
 }
 
@@ -183,31 +186,6 @@ const cesiumPlusProfileRaw: QueryBuilder = {
   paramBuilder: cesiumPlusProfile.paramBuilder
 }
 
-// transaction comment query and param builder
-// prevents overwrite
-const txComment: QueryBuilder = {
-  query: `INSERT INTO
-    transaction_comments(index_request_cid, time, pubkey, tx_id, comment)
-    VALUES ($1, $2, $3, $4, $5)
-    ON CONFLICT (pubkey, tx_id)
-    DO NOTHING;
-        `,
-  dataGetter: defaultDataGetter,
-  dataTransform: defaultDataTransform,
-  paramBuilder: (irCID: CID, ir: IndexRequest, _dataCID: CID, data: TxComment) => [
-    // $1 index_request_cid
-    irCID.toString(),
-    // $2 time
-    new Date(ir.time).toISOString(),
-    // $3 pubkey
-    ir.pubkey,
-    // $4 tx_id
-    data.tx_id,
-    // $5 comment
-    data.comment
-  ]
-}
-
 /// return data handler for a query builder
 const dataHandler: <T>(
   q: QueryBuilder,