Function FormatBsonValueForShellLogging

pg_documentdb_core/src/io/pgbson.c:363–437

* Gets the prefix for bson values of BSON for constructing messages * */

 *
 */
const char *
FormatBsonValueForShellLogging(const bson_value_t *bson)
{
	StringInfo str = makeStringInfo();
	switch (bson->value_type)
	{
		case BSON_TYPE_INT32:
		{
			appendStringInfo(str, "(%s)%d", "NumberInt", bson->value.v_int32);
			break;
		}

		case BSON_TYPE_INT64:
		{
			/*
			 * Cast value to "long long int" and use "%lld" to handle different word
			 * sizes in different architectures.
			 */
			appendStringInfo(str, "(%s)%lld", "NumberLong",
							 (long long int) bson->value.v_int64);
			break;
		}

		case BSON_TYPE_DOUBLE:
		{
			appendStringInfo(str, "%.1lf", bson->value.v_double);
			break;
		}

		case BSON_TYPE_DECIMAL128:
		{
			ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
							errmsg("Decimal 128 operations are currently unsupported")));
		}

		case BSON_TYPE_DOCUMENT:
		{
			bson_iter_t iter;
			BsonValueInitIterator(bson, &iter);
			appendStringInfoString(str, "{ ");
			const char *separator = NULL;
			while (bson_iter_next(&iter))
			{
				const char *key = bson_iter_key(&iter);
				const bson_value_t *bsonValue = bson_iter_value(&iter);

				if (separator != NULL)
				{
					appendStringInfoString(str, separator);
				}

				const char *bsonValStr = FormatBsonValueForShellLogging(bsonValue);
				appendStringInfo(str, "%s: %s", key, bsonValStr);
				separator = ", ";
			}

			appendStringInfoString(str, " }");
			break;