default.vcl.j2

backend default {
    .host = "127.0.0.1";
    .port = "8080";
}


sub detect_device {
    # Define the desktop device
    set req.http.X-Device = "desktop";

    if (req.http.User-Agent ~ "iP(hone|od)" || req.http.User-Agent ~ "Android" || req.http.User-Agent ~ "iPad") {
        # Define smartphones and tablets
        set req.http.X-Device = "smart";
    }

    elseif (req.http.User-Agent ~ "SymbianOS" || req.http.User-Agent ~ "^BlackBerry" ||
            req.http.User-Agent ~ "^SonyEricsson" || req.http.User-Agent ~ "^Nokia" ||
            req.http.User-Agent ~ "^SAMSUNG" || req.http.User-Agent ~ "^LG"
    ) {
        # Define every other mobile device
        set req.http.X-Device = "other";
    }
}


sub vcl_recv {

    call detect_device;

    # About graceful mode: >
    #   http://siguniang.wordpress.com/2013/10/22/varnish-cache-grace-saint-god/
    set req.grace = 300s;

    if (req.url == "/lifecheck.txt") {
        return (error);
    }

    if (req.restarts == 0) {
        if (req.http.x-forwarded-for) {
            set req.http.X-Forwarded-For =
                req.http.X-Forwarded-For + ", " + client.ip;
        } else {
            set req.http.X-Forwarded-For = client.ip;
        }
    }

    if (req.request != "GET" && req.request != "HEAD") {
        return (pass);
    }

    if (req.http.Authorization) {
        return (pass);
    }

    if (req.http.Accept-Encoding) {
        if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") {
            # No point in compressing these
            remove req.http.Accept-Encoding;
        }
        elsif (req.http.Accept-Encoding ~ "gzip") {
            set req.http.Accept-Encoding = "gzip";
        }
        else {
            # Unknown or deflate algorithm
            remove req.http.Accept-Encoding;
        }
    }

    return(lookup);
}

sub vcl_fetch {
    return(deliver);
}

sub vcl_hash {

    # Cookie毎にキャッシュ
    hash_data(req.http.cookie);

    # Device毎にキャッシュ
    hash_data(req.http.X-Device);

    # HTML, JS, CSS毎にキャッシュ
    hash_data(req.http.Accept);

    # URL毎にキャッシュ
    hash_data(req.url);

    if (req.http.host) {
        hash_data(req.http.host);
    } else {
        hash_data(server.ip);
    }

    return (hash);
}

sub vcl_error {
    set obj.http.Content-Type = "text/plain; charset=utf-8";
    if (req.url == "/lifecheck.txt") {
        set obj.status = 200;
        synthetic {"lifecheck"};
    }
    return (deliver);
}

# sub vcl_deliver {
    # if (obj.hits > 0) {
        # set resp.http.X-Cache = "HIT";
    # } else {
        # set resp.http.X-Cache = "MISS";
    # }
# }