MessDFS

MessDFS is a distributed file system built in a microservices environment that allows users to manage a remote space to work with their CSV files.

Project Features

• Possibility to work with remote files and directories.
• Possibility to read friends' files.

Microservices Communication

There are two microservices: the first one controls the remote resources of each user, such as directories and files, while the second one stores all the information on a PostgreSQL instance. This information is essential to ensure exclusive access for users to their own directories and files. Therefore, the communication between the two microservices revolves around this aspect, where the storage microservice communicates with the auth microservice when it needs to verify if the user of the transaction is the owner of the indicated directories or if a user can read another user's file based on friendship relations. Additionally, the storage microservice also communicates with auth when a user decides to delete a directory, removing both the logical and physical directory.

API

Storage

• insert data into a csv file

http://<IP address>:8081/csvi

{
    "txn_user": "<transaction user>",
    "query_type": "insert",
    "user": "<directory name>",
    "file_name": "<file name>",
    "query_content": ["<values>"]
}

• directory creation

http://<IP address>:8081/ndir

{
    "txn_user": "<transaction user>",
    "dir_to_create": "<directory>"
}

• update csv file

http://<IP address>:8081/csvu

{
    "txn_user": "<transaction user>",
    "query_type": "update",
    "user_name": "<directory name>",
    "file_name": "<file name>",
    "query_content": {
        "<column name>": ["id", "old data value", "new data value"]
    }
}

• read data

http://<IP address>:8081/csvr/{txn user}/{friend name}/{directory}/{file name}?id=<id value>

• delete directory

http://<IP address>:8081/ddir/{txn user}/{directory to delete}

• delete file

http://<IP address>:8081/dfile/{txn user}/{file to delete}/{directory}

• delete data

http://<IP address>:8081/csvd/{txn user}/{directory}/{file name}?id=<id value>

Auth

• signup

http://<IP address>:8083/signup

{
    "username": "<name>",
    "password": "<password>"
}

• add friend

http://<IP address>:8083/add-friend

{
    "username": "<name>",
    "friend_username": "<friend username>"
}

• add directory

http://<IP address>:8083/add-directory

{
    "username": "<name>",
    "directory": "<directory>"
}

• delete directory

http://<IP address>:8083/delete-dir?directory=<directory>

• delete-friend

http://<IP address>:8083/delete-friend?friend=<friend name>

• login

http://<IP address>:8083/login?username=<username>&password=<password>

• check ownership

http://<IP address>:8083/ownersship?txn=<username>&dir=<directory>

• check friendship

http://<IP address>:8083/friendship?txn=<name>&friend=<name>

• get directories

http://<IP address>:8083/directories?username=<name>

• get friends

http://<IP address>:8083/friends?username=<name>

• search users

http://<IP address>:8083/search-friend?username=<name>