Note: I've started with Heroku and Git from today morning. So, please bear with me. I'm using Windows 10, Firefox, Python 3.6.10 - http.server. Also, I'm following a Medium post,
Setup:
My site folder looks like:
- templates
- ... front-end files only (html, css, js, etc)
- package.json
- Procfile
- requirements.txt
- runtime.txt
- server.py
Following are the files named above,
package.json
{
"name": "site",
"version": "1.0.0",
"scripts": {
"start": "python server.py"
},
"dependencies": {},
"keywords": [],
"author": "",
"license": "ISC"
}
Procfile
web: python server.py $PORT
requirements.txt
gunicorn==20.0.4
runtime.txt
python-3.6.10
server.py
from http.server import BaseHTTPRequestHandler, HTTPServer
import json
import re
from binascii import a2b_base64
rExt = re.compile(r'(?<=\.).+')
rTimeStamp = re.compile(r'(?<=\"timeStamp\":)\s*\d+')
rVote = re.compile(r'(?<=\"voters\":)\s*.+(?=\}$)')
mimeMap = {
'html': 'text/html',
'css': 'text/css',
'js': 'text/javascript',
'json': 'text/json',
'txt': 'text/plain',
'ico': 'image/x-icon',
'jpg': 'image/jpg',
'png': 'image/png'
}
class Server(BaseHTTPRequestHandler):
def _send_headers(self, ext):
self.send_response(200)
self.send_header('Content-Type', mimeMap[ext])
self.end_headers()
def do_GET(self):
self.path = '/index.html' if self.path == '/' else self.path
ext = re.findall(rExt, self.path)[0]
self._send_headers(ext)
with open('.' + self.path, 'rb') as file:
content = file.read()
self.wfile.write(content)
# do_POST declared here, very long code...
def startServer():
serverAdd = ('', 8080)
server = HTTPServer(serverAdd, Server)
server.serve_forever()
startServer()
Problem: After I followed all the commands given in the post (without any errors), I successfully deployed my HerokuApp, but on opening "https://rahulverma-blog.herokuapp.com/", I get the application Error. As, it suggests to run heroku logs --tail, I did and got the following,
... (i'm quoting only post build logs here)
2020-04-29T10:06:34.000000+00:00 app[api]: Build succeeded
2020-04-29T10:07:30.116043+00:00 heroku[web.1]: State changed from starting to crashed
2020-04-29T10:07:30.120089+00:00 heroku[web.1]: State changed from crashed to starting
2020-04-29T10:08:31.583051+00:00 heroku[router]: at=error code=H20 desc="App boot timeout" method=GET path="/" host=rahulverma-blog.herokuapp.com request_id=29ea0435-0f71-440d-91e8-76196d731e0f fwd="106.219.65.58" dyno= connect= service= status=503 bytes= protocol=https
2020-04-29T10:08:33.266420+00:00 heroku[web.1]: State changed from starting to crashed
2020-04-29T10:08:35.232741+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=rahulverma-blog.herokuapp.com request_id=15f11f7f-35dd-49dc-b6f7-2461cfb9093a fwd="106.219.65.58" dyno= connect= service= status=503 bytes= protocol=https
Not Important, IMO...
Further, I tried googling about my problem and I found "Python Flask Web API [Heroku]: It runs locally but shows Application Error when deployed". Then, I tried editing my Procfile accordingly, but it didn't worked out, perhaps bcoz Sherman's server was made using Flask. BTW, I got OSError: Address already in use. The logs are following,
2020-04-29T08:14:12.493652+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/base.py", line 67, in wsgi
2020-04-29T08:14:12.493652+00:00 app[web.1]: self.callable = self.load()
2020-04-29T08:14:12.493653+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
2020-04-29T08:14:12.493653+00:00 app[web.1]: return self.load_wsgiapp()
2020-04-29T08:14:12.493653+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
2020-04-29T08:14:12.493653+00:00 app[web.1]: return util.import_app(self.app_uri)
2020-04-29T08:14:12.493654+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/util.py", line 358, in import_app
2020-04-29T08:14:12.493654+00:00 app[web.1]: mod = importlib.import_module(module)
2020-04-29T08:14:12.493654+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
2020-04-29T08:14:12.493655+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2020-04-29T08:14:12.493655+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 994, in _gcd_import
2020-04-29T08:14:12.493656+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 971, in _find_and_load
2020-04-29T08:14:12.493656+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
2020-04-29T08:14:12.493657+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
2020-04-29T08:14:12.493657+00:00 app[web.1]: File "<frozen importlib._bootstrap_external>", line 678, in exec_module
2020-04-29T08:14:12.493658+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
2020-04-29T08:14:12.493658+00:00 app[web.1]: File "/app/server.py", line 90, in <module>
2020-04-29T08:14:12.493658+00:00 app[web.1]: startServer()
2020-04-29T08:14:12.493659+00:00 app[web.1]: File "/app/server.py", line 87, in startServer
2020-04-29T08:14:12.493659+00:00 app[web.1]: server = HTTPServer(serverAdd, Server)
2020-04-29T08:14:12.493659+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/socketserver.py", line 456, in __init__
2020-04-29T08:14:12.493660+00:00 app[web.1]: self.server_bind()
2020-04-29T08:14:12.493660+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/http/server.py", line 136, in server_bind
2020-04-29T08:14:12.493660+00:00 app[web.1]: socketserver.TCPServer.server_bind(self)
2020-04-29T08:14:12.493661+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/socketserver.py", line 470, in server_bind
2020-04-29T08:14:12.493661+00:00 app[web.1]: self.socket.bind(self.server_address)
2020-04-29T08:14:12.493661+00:00 app[web.1]: OSError: [Errno 98] Address already in use
2020-04-29T08:14:12.493733+00:00 app[web.1]: [2020-04-29 08:14:12 +0000] [11] [INFO] Worker exiting (pid: 11)
