apisix/t/plugin/limit-conn.t

BEGIN {
    if ($ENV{TEST_NGINX_CHECK_LEAK}) {
        $SkipReason = "unavailable for the hup tests";

    } else {
        $ENV{TEST_NGINX_USE_HUP} = 1;
        undef $ENV{TEST_NGINX_USE_STAP};
    }
}

use t::APISix 'no_plan';

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


add_block_preprocessor(sub {
    my ($block) = @_;
    my $port = $ENV{TEST_NGINX_SERVER_PORT};

    my $config = $block->config // "";
    $config .= <<_EOC_;

    location /access_root_dir {
        content_by_lua_block {
            local httpc = require "resty.http"
            local hc = httpc:new()

            local res, err = hc:request_uri('http://127.0.0.1:$port/limit_conn')
            if res then
                ngx.exit(res.status)
            end
        }
    }

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

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

run_tests;

__DATA__

=== TEST 1: sanity
--- config
    location /t {
        content_by_lua_block {
            local plugin = require("apisix.plugins.limit-conn")
            local ok, err = plugin.check_schema({conn = 1, burst = 0, default_conn_delay = 0.1, rejected_code = 503, key = 'remote_addr'})
            if not ok then
                ngx.say(err)
            end

            ngx.say("done")
        }
    }
--- request
GET /t
--- response_body
done
--- no_error_log
[error]



=== TEST 2: wrong value of key
--- config
    location /t {
        content_by_lua_block {
            local plugin = require("apisix.plugins.limit-conn")
            local ok, err = plugin.check_schema({conn = 1, default_conn_delay = 0.1, rejected_code = 503, key = 'remote_addr'})
            if not ok then
                ngx.say(err)
            end

            ngx.say("done")
        }
    }
--- request
GET /t
--- response_body
invalid "required" in docuement at pointer "#"
done
--- no_error_log
[error]



=== TEST 3: add plugin
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/routes/1',
                 ngx.HTTP_PUT,
                 [[{
                        "plugins": {
                            "limit-conn": {
                                "conn": 100,
                                "burst": 50,
                                "default_conn_delay": 0.1,
                                "rejected_code": 503,
                                "key": "remote_addr"
                            }
                        },
                        "upstream": {
                            "nodes": {
                                "127.0.0.1:1980": 1
                            },
                            "type": "roundrobin"
                        },
                        "uri": "/limit_conn"
                }]],
                [[{
                    "node": {
                        "value": {
                            "plugins": {
                                "limit-conn": {
                                    "conn": 100,
                                    "burst": 50,
                                    "default_conn_delay": 0.1,
                                    "rejected_code": 503,
                                    "key": "remote_addr"
                                }
                            },
                            "upstream": {
                                "nodes": {
                                    "127.0.0.1:1980": 1
                                },
                                "type": "roundrobin"
                            },
                            "uri": "/limit_conn"
                        },
                        "key": "/apisix/routes/1"
                    },
                    "action": "set"
                }]]
                )

            if code >= 300 then
                ngx.status = code
            end
            ngx.say(body)
        }
    }
--- request
GET /t
--- response_body
passed
--- no_error_log
[error]



=== TEST 4: not exceeding the burst
--- request
GET /test_concurrency
--- timeout: 10s
--- response_body
200
200
200
200
200
200
200
200
200
200
--- no_error_log
[error]



=== TEST 5: update plugin
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/routes/1',
                 ngx.HTTP_PUT,
                 [[{
                        "plugins": {
                            "limit-conn": {
                                "conn": 2,
                                "burst": 1,
                                "default_conn_delay": 0.1,
                                "rejected_code": 503,
                                "key": "remote_addr"
                            }
                        },
                        "upstream": {
                            "nodes": {
                                "127.0.0.1:1980": 1
                            },
                            "type": "roundrobin"
                        },
                        "uri": "/limit_conn"
                }]],
                [[{
                    "node": {
                        "value": {
                            "plugins": {
                                "limit-conn": {
                                    "conn": 2,
                                    "burst": 1,
                                    "default_conn_delay": 0.1,
                                    "rejected_code": 503,
                                    "key": "remote_addr"
                                }
                            },
                            "upstream": {
                                "nodes": {
                                    "127.0.0.1:1980": 1
                                },
                                "type": "roundrobin"
                            },
                            "uri": "/limit_conn"
                        },
                        "key": "/apisix/routes/1"
                    },
                    "action": "set"
                }]]
                )

            if code >= 300 then
                ngx.status = code
            end
            ngx.say(body)
        }
    }
--- request
GET /t
--- response_body
passed
--- no_error_log
[error]



=== TEST 6: exceeding the burst
--- request
GET /test_concurrency
--- timeout: 10s
--- response_body
200
200
200
503
503
503
503
503
503
503
--- no_error_log
[error]



=== TEST 7: update plugin
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/routes/1',
                 ngx.HTTP_PUT,
                 [[{
                        "plugins": {
                            "limit-conn": {
                                "conn": 5,
                                "burst": 1,
                                "default_conn_delay": 0.1,
                                "rejected_code": 503,
                                "key": "remote_addr"
                            }
                        },
                        "upstream": {
                            "nodes": {
                                "127.0.0.1:1980": 1
                            },
                            "type": "roundrobin"
                        },
                        "uri": "/limit_conn"
                }]]
                )

            if code >= 300 then
                ngx.status = code
            end
            ngx.say(body)
        }
    }
--- request
GET /t
--- response_body
passed
--- no_error_log
[error]



=== TEST 8: exceeding the burst
--- request
GET /test_concurrency
--- timeout: 10s
--- response_body
200
200
200
200
200
200
503
503
503
503
--- no_error_log
[error]



=== TEST 9: invalid route: missing key
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/routes/1',
                 ngx.HTTP_PUT,
                 [[{
                        "plugins": {
                            "limit-conn": {
                                "burst": 1,
                                "default_conn_delay": 0.1,
                                "rejected_code": 503,
                                "key": "remote_addr"
                            }
                        },
                        "upstream": {
                            "nodes": {
                                "127.0.0.1:1980": 1
                            },
                            "type": "roundrobin"
                        },
                        "uri": "/limit_conn"
                }]]
                )

            if code >= 300 then
                ngx.status = code
            end
            ngx.print(body)
        }
    }
--- request
GET /t
--- error_code: 400
--- response_body
{"error_msg":"failed to check the configuration of plugin limit-conn err: invalid \"required\" in docuement at pointer \"#\""}
--- no_error_log
[error]



=== TEST 10: invalid route: wrong conn
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/routes/1',
                 ngx.HTTP_PUT,
                 [[{
                        "plugins": {
                            "limit-conn": {
                                    "conn": -1,
                                    "burst": 1,
                                    "default_conn_delay": 0.1,
                                    "rejected_code": 503,
                                    "key": "remote_addr"
                                }
                        },
                        "upstream": {
                            "nodes": {
                                "127.0.0.1:1980": 1
                            },
                            "type": "roundrobin"
                        },
                        "uri": "/limit_conn"
                }]]
                )

            if code >= 300 then
                ngx.status = code
            end
            ngx.print(body)
        }
    }
--- request
GET /t
--- error_code: 400
--- response_body
{"error_msg":"failed to check the configuration of plugin limit-conn err: invalid \"minimum\" in docuement at pointer \"#\/conn\""}
--- no_error_log
[error]



=== TEST 11: invalid service: missing key
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/services/1',
                 ngx.HTTP_PUT,
                 [[{
                        "plugins": {
                            "limit-conn": {
                                    "burst": 1,
                                    "default_conn_delay": 0.1,
                                    "rejected_code": 503,
                                    "key": "remote_addr"
                                }
                        },
                        "upstream": {
                            "nodes": {
                                "127.0.0.1:1980": 1
                            },
                            "type": "roundrobin"
                        }
                }]]
                )

            if code >= 300 then
                ngx.status = code
            end
            ngx.print(body)
        }
    }
--- request
GET /t
--- error_code: 400
--- response_body
{"error_msg":"failed to check the configuration of plugin limit-conn err: invalid \"required\" in docuement at pointer \"#\""}
--- no_error_log
[error]



=== TEST 12: invalid service: wrong count
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/services/1',
                 ngx.HTTP_PUT,
                 [[{
                        "plugins": {
                            "limit-conn": {
                                "conn": -1,
                                "burst": 1,
                                "default_conn_delay": 0.1,
                                "rejected_code": 503,
                                "key": "remote_addr"
                            }
                        },
                        "upstream": {
                            "nodes": {
                                "127.0.0.1:1980": 1
                            },
                            "type": "roundrobin"
                        }
                }]]
                )

            if code >= 300 then
                ngx.status = code
            end
            ngx.print(body)
        }
    }
--- request
GET /t
--- error_code: 400
--- response_body
{"error_msg":"failed to check the configuration of plugin limit-conn err: invalid \"minimum\" in docuement at pointer \"#\/conn\""}
--- no_error_log
[error]



=== TEST 13: disable plugin
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            local code, body = t('/apisix/admin/routes/1',
                 ngx.HTTP_PUT,
                 [[{
                        "plugins": {
                        },
                        "upstream": {
                            "nodes": {
                                "127.0.0.1:1980": 1
                            },
                            "type": "roundrobin"
                        },
                        "uri": "/limit_conn"
                }]]
                )

            if code >= 300 then
                ngx.status = code
            end
            ngx.say(body)
        }
    }
--- request
GET /t
--- response_body
passed
--- no_error_log
[error]



=== TEST 14: exceeding the burst
--- request
GET /test_concurrency
--- timeout: 10s
--- response_body
200
200
200
200
200
200
200
200
200
200
--- no_error_log
[error]