t/stream-plugin/traffic-split.t

#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
use t::APISIX 'no_plan';

repeat_each(1);
no_long_string();
no_shuffle();
no_root_location();

add_block_preprocessor(sub {
    my ($block) = @_;

    if (!$block->error_log && !$block->no_error_log) {
        $block->set_value("no_error_log", "[error]\n[alert]");
    }

    my $config = $block->config // <<_EOC_;
    location /hit {
        content_by_lua_block {
            local sock = ngx.socket.tcp()
            local ok, err = sock:connect("127.0.0.1", 1985)
            if not ok then
                ngx.log(ngx.ERR, "failed to connect: ", err)
                return ngx.exit(503)
            end

            local bytes, err = sock:send("mmm")
            if not bytes then
                ngx.log(ngx.ERR, "send stream request error: ", err)
                return ngx.exit(503)
            end
            local data, err = sock:receive("*a")
            if not data then
                sock:close()
                return ngx.exit(503)
            end
            ngx.print(data)
        }
    }

    location /test_multiple_requests {
        content_by_lua_block {
            local reqs = {}
            for i = 1, 10 do
                reqs[i] = { "/hit" }
            end
            local resps = { ngx.location.capture_multi(reqs) }
            for i, resp in ipairs(resps) do
                ngx.say(resp.body)
            end
        }
    }
_EOC_

    $block->set_value("config", $config);

    my $stream_upstream_code = $block->stream_upstream_code // <<_EOC_;
            local sock = ngx.req.socket()
            local data = sock:receive("1")
            ngx.say("hello world from port " .. ngx.var.server_port)
_EOC_
    $block->set_value("stream_upstream_code", $stream_upstream_code);
});

run_tests;

__DATA__

=== TEST 1: set stream route with traffic-split plugin (basic weighted upstreams)
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/stream_routes/1',
                ngx.HTTP_PUT,
                [[{
                    "plugins": {
                        "traffic-split": {
                            "rules": [{
                                "weighted_upstreams": [
                                    {
                                        "upstream": {
                                            "name": "upstream_A",
                                            "type": "roundrobin",
                                            "nodes": {
                                                "127.0.0.1:1995": 1
                                            }
                                        },
                                        "weight": 9
                                    },
                                    {
                                        "upstream": {
                                            "name": "upstream_B",
                                            "type": "roundrobin",
                                            "nodes": {
                                                "127.0.0.1:1996": 1
                                            }
                                        },
                                        "weight": 1
                                    }
                                ]
                            }]
                        }
                    }
                }]]
            )
            if code >= 300 then
                ngx.status = code
            end
            ngx.say(body)
        }
    }
--- request
GET /t
--- response_body
passed



=== TEST 2: traffic split distribution between two upstreams
--- request
GET /test_multiple_requests
--- response_body_like
hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995


hello world from port 1995
--- stream_enable
--- error_log
Connection refused



=== TEST 3: set stream route with traffic-split using default route upstream
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/upstreams/1',
                ngx.HTTP_PUT,
                [[{
                    "nodes": {
                        "127.0.0.1:1997": 1
                    },
                    "type": "roundrobin"
                }]]
            )
            if code >= 300 then
                ngx.status = code
                ngx.say(body)
                return
            end

            local code, body = t('/apisix/admin/stream_routes/2',
                ngx.HTTP_PUT,
                [[{
                    "plugins": {
                        "traffic-split": {
                            "rules": [{
                                "weighted_upstreams": [
                                    {
                                        "upstream": {
                                            "name": "upstream_A",
                                            "type": "roundrobin",
                                            "nodes": {
                                                "127.0.0.1:1995": 1
                                            }
                                        },
                                        "weight": 9
                                    },
                                    {
                                        "weight": 1
                                    }
                                ]
                            }]
                        }
                    },
                    "upstream_id": "1"
                }]]
            )
            if code >= 300 then
                ngx.status = code
            end
            ngx.say(body)
        }
    }
--- request
GET /t
--- response_body
passed



=== TEST 4: traffic split between plugin upstream and default route upstream
--- request
GET /test_multiple_requests
--- response_body_like
hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995

hello world from port 1995


hello world from port 1995
--- stream_enable
--- error_log
Connection refused