Add functions view (#256)

Author: ishmum123

dumper/app/src/main/java/com/google/edwmigration/dumper/application/dumper/connector/snowflake/SnowflakeMetadataConnector.java

@@ -270,6 +270,12 @@ public void addTasksTo(
           WarehousesFormat.Header.class,
           "SHOW WAREHOUSES",
           new TaskVariant(WarehousesFormat.AU_ZIP_ENTRY_NAME, AU));
+
+      addSingleSqlTask(
+          out,
+          FunctionsViewFormat.Header.class,
+          "SHOW FUNCTIONS",
+          new TaskVariant(FunctionsViewFormat.AU_ZIP_ENTRY_NAME, AU));
     }
   }
 

dumper/lib-dumper-spi/src/main/java/com/google/edwmigration/dumper/plugin/lib/dumper/spi/SnowflakeMetadataDumpFormat.java

@@ -100,6 +100,31 @@ enum Header {
     }
   }
 
+  interface FunctionsViewFormat {
+
+    String AU_ZIP_ENTRY_NAME = "functions_view.csv";
+
+    enum Header {
+      CreatedOn,
+      Name,
+      SchemaName,
+      IsBuiltin,
+      IsAggregate,
+      IsAnsi,
+      MinNumArguments,
+      MaxNumArguments,
+      Arguments,
+      Description,
+      CatalogName,
+      IsTableFunction,
+      ValidForClustering,
+      IsSecure,
+      IsExternalFunction,
+      Language,
+      IsMemoizable,
+    }
+  }
+
   interface TableStorageMetricsFormat {
 
     String AU_ZIP_ENTRY_NAME = "table_storage_metrics-au.csv";