gpcontrib/gpcloud/regress/input/0_00_prepare_protocols.source

CREATE OR REPLACE FUNCTION read_from_s3() RETURNS integer AS
        '$libdir/gps3ext.so', 's3_import' LANGUAGE C STABLE;

CREATE OR REPLACE FUNCTION read_from_s3() RETURNS integer AS
        '$libdir/gpcloud.so', 's3_import' LANGUAGE C STABLE;

CREATE OR REPLACE FUNCTION write_to_s3() RETURNS integer AS
        '$libdir/gpcloud.so', 's3_export' LANGUAGE C STABLE;

CREATE PROTOCOL s3 (
        readfunc = read_from_s3,
        writefunc = write_to_s3
);