72 lines
1.5 KiB
Lua
72 lines
1.5 KiB
Lua
ngx.header.content_type = 'text/html';
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local backend_num = ngx.shared.servers:get("inv-backends");
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-- local backend_num = 4;
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local function generate_backend_list()
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local html = ""
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for i=1, backend_num do
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html = html .. "<p><a href='/switchbackend?backend_id=" .. i .. "'>Backend " .. i .. "</a></p>"
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end
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return html
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end
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ngx.say([[
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="refresh" content="2">
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<style>
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html {
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background-color: #111111;
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color: #FFFFFF;
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font-family: sans-serif;
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}
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a:link {
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color: rgb(255, 180, 255);
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}
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a:visited {
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color: rgb(255, 180, 255);
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}
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.content {
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padding: 20px 20px;
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margin: 0 auto;
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max-width: 780px;
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width: 70%;
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min-height: 60vh;
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word-wrap: break-word;
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line-height: 1.5em;
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}
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h1 {
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color: red;
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}
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</style>
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<title>502 Bad Gateway</title>
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</head>
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<body>
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<div class="content">
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<h1>502 Bad Gateway</h1>
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<p>Looks like you got a dead backend...</p>
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<p>If you don't get an alive backend after 1 minute, it's because something is wrong...</p>
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<p><b>Refreshing automatically in 2 seconds</b></p>
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<p>Do you want to switch to another backend?</p>
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]] .. generate_backend_list() .. [[
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<div style="max-width: 60%;">
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<p>
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<i>If this page doesn't redirect you to any alive backend
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then there is no available backends alive.
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</i>
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</p>
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</div>
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</div>
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</body>
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</html>
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]])
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