#
# 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_root_location();
no_shuffle();
log_level("info");
workers(2);
master_on();

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

    $block->set_value("no_error_log", "[error]");

    $block;
});

run_tests;

__DATA__

=== TEST 1: reload plugins
--- config
location /t {
    content_by_lua_block {
        local t = require("lib.test_admin").test
        local code, _, org_body = t('/apisix/admin/plugins/reload',
                                    ngx.HTTP_PUT)

        ngx.status = code
        ngx.say(org_body)
        ngx.sleep(0.2)
    }
}
--- request
GET /t
--- response_body
done
--- error_log
load plugin times: 1
load plugin times: 1
start to hot reload plugins
start to hot reload plugins
load(): plugins not changed
load_stream(): plugins not changed
load(): plugins not changed
load_stream(): plugins not changed



=== TEST 2: reload plugins triggers plugin list sync
--- config
location /t {
    content_by_lua_block {
        local core = require "apisix.core"
        local config_util   = require("apisix.core.config_util")
        ngx.sleep(0.5) -- make sure the sync happened when admin starts is already finished

        local before_reload = true
        local plugins_conf, err
        plugins_conf, err = core.config.new("/plugins", {
            automatic = true,
            single_item = true,
            filter = function()
                -- called twice, one for readir, another for waitdir
                ngx.log(ngx.WARN, "reload plugins on node ",
                        before_reload and "before reload" or "after reload")
                local plugins = {}
                for _, conf_value in config_util.iterate_values(plugins_conf.values) do
                    core.table.insert_tail(plugins, unpack(conf_value.value))
                end
                ngx.log(ngx.WARN, require("toolkit.json").encode(plugins))
            end,
        })
        if not plugins_conf then
            error("failed to create etcd instance for fetching /plugins : "
                .. err)
        end
        ngx.sleep(0.5)

        local data = [[
apisix:
  node_listen: 1984
  admin_key: null
plugins:
    - jwt-auth
stream_plugins:
    - mqtt-proxy
        ]]
        require("lib.test_admin").set_config_yaml(data)

        before_reload = false
        local t = require("lib.test_admin").test
        local code, _, org_body = t('/apisix/admin/plugins/reload',
                                    ngx.HTTP_PUT)

        ngx.status = code
        ngx.say(org_body)
        ngx.sleep(1)
    }
}
--- request
GET /t
--- response_body
done
--- grep_error_log eval
qr/reload plugins on node \w+ reload/
--- grep_error_log_out
reload plugins on node before reload
reload plugins on node after reload
--- error_log
filter(): [{"name":"jwt-auth"},{"name":"mqtt-proxy","stream":true}]



=== TEST 3: reload plugins when attributes changed
--- yaml_config
apisix:
  node_listen: 1984
  admin_key: null
plugins:
    - example-plugin
plugin_attr:
    example-plugin:
        val: 0
--- config
location /t {
    content_by_lua_block {
        local core = require "apisix.core"
        ngx.sleep(0.1)
        local data = [[
apisix:
  node_listen: 1984
  admin_key: null
plugins:
    - example-plugin
plugin_attr:
    example-plugin:
        val: 1
        ]]
        require("lib.test_admin").set_config_yaml(data)

        local t = require("lib.test_admin").test
        local code, _, org_body = t('/apisix/admin/plugins/reload',
                                    ngx.HTTP_PUT)

        ngx.status = code
        ngx.say(org_body)
        ngx.sleep(0.1)

        local data = [[
apisix:
  node_listen: 1984
  admin_key: null
plugins:
    - example-plugin
plugin_attr:
    example-plugin:
        val: 1
        ]]
        require("lib.test_admin").set_config_yaml(data)

        local t = require("lib.test_admin").test
        local code, _, org_body = t('/apisix/admin/plugins/reload',
                                    ngx.HTTP_PUT)
        ngx.say(org_body)
    }
}
--- request
GET /t
--- response_body
done
done
--- grep_error_log eval
qr/example-plugin get plugin attr val: \d+/
--- grep_error_log_out
example-plugin get plugin attr val: 0
example-plugin get plugin attr val: 0
example-plugin get plugin attr val: 0
example-plugin get plugin attr val: 1
example-plugin get plugin attr val: 1
example-plugin get plugin attr val: 1
--- error_log
plugin_attr of example-plugin changed
plugins not changed



=== TEST 4: reload plugins to change prometheus' export uri
--- yaml_config
apisix:
  node_listen: 1984
  admin_key: null
plugins:
  - prometheus
plugin_attr:
  prometheus:
    export_uri: /metrics
--- config
location /t {
    content_by_lua_block {
        local core = require "apisix.core"
        ngx.sleep(0.1)
        local t = require("lib.test_admin").test
        local code, _, org_body = t('/apisix/metrics',
                                    ngx.HTTP_GET)
        ngx.say(code)

        local data = [[
apisix:
  node_listen: 1984
  admin_key: null
plugins:
  - prometheus
plugin_attr:
  prometheus:
    export_uri: /apisix/metrics
        ]]
        require("lib.test_admin").set_config_yaml(data)

        local code, _, org_body = t('/apisix/admin/plugins/reload',
                                    ngx.HTTP_PUT)

        ngx.say(org_body)

        ngx.sleep(0.1)
        local code, _, org_body = t('/apisix/metrics',
                                    ngx.HTTP_GET)
        ngx.say(code)
    }
}
--- request
GET /t
--- response_body
404
done
200