zmandyhe / web-backend-microservices Goto Github PK

* We will be using vanilla Flask for the web framework.
* We will be using ScyllaDB, A Cassandra type of wide columndatabase.
* We will be using a Linux-like directory structure for our project. (See Project Structure for more information)

* etc/ will contain all of the configuration files.
* bin/ will contain all of the scripts to aid in the project.
* app/ will contain all of the python code to our microservices.
  -xspf.py
  -users.py
  -tracks.py
  -playlists.py
  -desc.py
* lib/ will contain various libraries (or libary-type files).
* var/ will contain various changing files; we keeps the project 2 Sqlite3 database files there.
* media/ will contain the individual music files and the album art.
* docs/ contains screenshots for memcached before/afteer and microservices operations screenshots.

- Flask
- foreman
- dot-env
- Jinja2
- requests
- memcached and pymemcache
- Docker
- ScyllaDB
- Cassandra
- DataStax's Python Driver for Apache Canssandra
- MinIO Object Storage
- Kong API Gateway

1. start the scylla database from any directory, then verify it do start:
```
$docker start scylla
$docker exec -it scylla nodetool status
```
2. Start the memcache server running on local host with port number of 11211
```
sudo service memcached start
```
record the memcache statistics before and after the xspf service uses memcache.
```
$ telnet localhost 11211
  stats
```
3. Run the 4 backend microservices and the xspf playlist service, migrate to the bin/ directory, run the Procfile through foreman of "foreman start", the 4 microservices will run three instances each all on separate ports. To get the xspf playlist xml output, visit:
http://127.0.0.1:5400/playlist/1
  ```
  foreman start
  ```
  ports assignments are:
  ```
  21:31:46 users.1     |  * Running on http://127.0.0.1:5200/
  21:31:46 tracks.1    |  * Running on http://127.0.0.1:5000/
  21:31:46 playlists.1 |  * Running on http://127.0.0.1:5100/
  21:31:46 desc.1      |  * Running on http://127.0.0.1:5300/
  ```

4. Run xspf.py from ./app/xspf.py as follows. The service is running on http://127.0.0.1:5400/playlist/1. The output file is xspf-playlist_1.xml.
```
python3 xspf.py
```
5. Media data has been saved to MiNIO remote server. To start MINIO: go to /Minio folder with executable file and sub-folders, then to go terminal, and run minio as the following:
```
   ./minio server start object storage server
```
  Minio server will run at http://127.0.0.1:9000, and mp3 files are stored in the folder of /tracks
  Use the following credentials to access the minio server bucket:
  ```
     -AccessKey: 54AUW87M5DUD0B9UBR1X
     -SecretKey: s28mRRzRRhJcJv84MxzEyNaVt2nTwejSkWuGoBr8
  ```