Limit batch interface to 100 items in UI and 10,000 via API

pydatalab/src/pydatalab/config.py

@@ -239,6 +239,11 @@ class ServerConfig(BaseSettings):
 its importance when deploying a datalab instance.""",
     )
 
+    MAX_BATCH_CREATE_SIZE: int = Field(
+        10_000,
+        description="Maximum number of items that can be created in a single batch operation.",
+    )
+
     BACKUP_STRATEGIES: dict[str, BackupStrategy] | None = Field(
         {
             "daily-snapshots": BackupStrategy(

pydatalab/src/pydatalab/routes/v0_1/items.py

@@ -662,6 +662,15 @@ def create_samples():
     request_json = request.get_json()  # noqa: F821 pylint: disable=undefined-variable
 
     sample_jsons = request_json["new_sample_datas"]
+
+    if len(sample_jsons) > CONFIG.MAX_BATCH_CREATE_SIZE:
+        return jsonify(
+            {
+                "status": "error",
+                "message": f"Batch size limit exceeded. Maximum allowed: {CONFIG.MAX_BATCH_CREATE_SIZE}, requested: {len(sample_jsons)}",
+            }
+        ), 400
+
     copy_from_item_ids = request_json.get("copy_from_item_ids")
     generate_ids_automatically = request_json.get("generate_ids_automatically")
 

webapp/src/components/BatchCreateItemModal.vue

@@ -4,7 +4,8 @@
       :model-value="modelValue"
       :disable-submit="
         isValidEntryID.some((e) => e) ||
-        (!generateIDsAutomatically && items.some((s) => !Boolean(s.item_id)))
+        (!generateIDsAutomatically && items.some((s) => !Boolean(s.item_id))) ||
+        isValidBatchSize
       "
       @update:model-value="$emit('update:modelValue', $event)"
     >
@@ -48,6 +49,12 @@
                     max="100"
                   />
                 </div>
+                <div
+                  v-if="isValidBatchSize"
+                  class="form-error ml-2 text-nowrap small align-self-center"
+                >
+                  {{ isValidBatchSize }}
+                </div>
               </div>
               <div class="row">
                 <div class="col-md-6 mt-2" @click="templateIsOpen = !templateIsOpen">
@@ -406,6 +413,7 @@ export default {
       },
 
       serverResponses: {}, // after the server responds, store error messages if any
+      batchSizeError: false,
     };
   },
   computed: {
@@ -435,10 +443,20 @@ export default {
         return validateEntryID(item.item_id, this.takenItemIds, this.takenSampleIds);
       });
     },
+    isValidBatchSize() {
+      return this.batchSizeError;
+    },
   },
 
   watch: {
     nSamples(newValue, oldValue) {
+      if (newValue > 100) {
+        this.batchSizeError = "Maximum 100 items can be created at once";
+        return;
+      } else {
+        this.batchSizeError = false;
+      }
+
       if (newValue < oldValue) {
         this.items = this.items.slice(0, newValue);
       }
@@ -574,6 +592,7 @@ export default {
           this.beforeSubmit = false;
         })
         .catch((error) => {
+          window.alert("Error with creating new items: " + error);
           console.log("Error with creating new items: " + error);
         });
     },