Function ValidateShardKey

pg_documentdb/src/sharding/sharding.c:437–462

static void
ValidateShardKey(const pgbson *shardKeyDoc)
{
	bson_iter_t shardKeyIterator;
	PgbsonInitIterator(shardKeyDoc, &shardKeyIterator);

	while (bson_iter_next(&shardKeyIterator))
	{
		const bson_value_t *value = bson_iter_value(&shardKeyIterator);

		if (value->value_type == BSON_TYPE_UTF8)
		{
			if (strcmp("hashed", value->value.v_utf8.str) != 0)
			{
				ereport(ERROR, (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
								errmsg("Shard key value provided is invalid: %s",
									   value->value.v_utf8.str)));
			}
		}
		else
		{
			ereport(ERROR, (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
							errmsg("only shard keys that use hashed are supported")));
		}
	}
}


static void