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add a rendered html page to the example httpd server (#855)

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* Expand example http gateway with html rendered stats

* Update the httpd comments
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Hamish Coleman 2021-10-16 01:15:21 +01:00 committed by GitHub
parent bb3de5698c
commit 94e6f4a8a8
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1 changed files with 95 additions and 2 deletions
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97
scripts/n2nhttpd
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@ -3,10 +3,12 @@
# #
# Simple http server to allow user control of n2n edge nodes # Simple http server to allow user control of n2n edge nodes
# #
# Currently only for demonstration - needs javascript written to render the # Currently only for demonstration
# results properly. # - needs nicer looking html written
# - needs more json interfaces in edge
# #
# Try it out with # Try it out with
# http://localhost:8080/
# http://localhost:8080/edge/peer # http://localhost:8080/edge/peer
# http://localhost:8080/edge/super # http://localhost:8080/edge/super
@ -69,6 +71,82 @@ def send_cmd(port, debug, cmd):
result.append(data) result.append(data)
indexhtml = """
<html>
<head>
<title>n2n management</title>
</head>
<body>
<div id="time"></div>
<br>
Supernodes:
<div id="super"></div>
<br>
Peers:
<div id="peer"></div>
<script>
function rows2table(id, columns, data) {
let s = "<table border=1 cellspacing=0>"
s += "<tr>"
columns.forEach((col) => {
s += "<th>" + col
});
data.forEach((row) => {
s += "<tr>"
columns.forEach((col) => {
s += "<td>" + row[col]
});
});
s += "</table>"
let div = document.getElementById(id);
div.innerHTML=s
}
function fetch_table(url, id, columns) {
fetch(url)
.then(function (response) {
return response.json();
})
.then(function (data) {
rows2table(id,columns,data);
})
.catch(function (err) {
console.log('error: ' + err);
});
}
function refresh_job() {
let now = new Date().getTime();
let time = document.getElementById('time');
time.innerHTML="last updated: " + now;
fetch_table(
'edge/super',
'super',
['version','current','macaddr','sockaddr','uptime']
);
fetch_table(
'edge/peer',
'peer',
['mode','ip4addr','macaddr','sockaddr','desc']
);
}
function refresh_setup(interval) {
var timer = setInterval(refresh_job, interval);
}
refresh_setup(5000);
refresh_job();
</script>
</body>
</html>
"""
class SimpleHandler(http.server.BaseHTTPRequestHandler): class SimpleHandler(http.server.BaseHTTPRequestHandler):
def log_request(self, code='-', size='-'): def log_request(self, code='-', size='-'):
@ -77,9 +155,18 @@ class SimpleHandler(http.server.BaseHTTPRequestHandler):
def do_GET(self): def do_GET(self):
url_tail = self.path url_tail = self.path
if url_tail == "/":
self.send_response(HTTPStatus.OK)
self.send_header('Content-type', 'text/html; charset=utf-8')
self.end_headers()
self.wfile.write(indexhtml.encode('utf8'))
return
if url_tail.startswith("/edge/"): if url_tail.startswith("/edge/"):
tail = url_tail.split('/') tail = url_tail.split('/')
cmd = 'j.' + tail[2] cmd = 'j.' + tail[2]
# if commands ever need args, use more of the path components
try: try:
data = send_cmd(5644, False, cmd) data = send_cmd(5644, False, cmd)
@ -93,6 +180,12 @@ class SimpleHandler(http.server.BaseHTTPRequestHandler):
self.send_header('Content-type', 'application/json') self.send_header('Content-type', 'application/json')
self.end_headers() self.end_headers()
self.wfile.write(json.dumps(data).encode('utf8')) self.wfile.write(json.dumps(data).encode('utf8'))
return
self.send_response(HTTPStatus.NOT_FOUND)
self.end_headers()
self.wfile.write(b'Not Found')
return
def main(): def main():