Sessions aren't correctly stored

[yoshuawuyts]

Each request we make creates a new session id entry in the database. It seems we're probably doing something wrong. The result is that the counter isn't updated and we keep opening new sessions.

Related issues: #1, http-rs/async-session#10, http-rs/tide#664

cc/ @lrlna

Repro

1. Clone mongodb-session-example tide#664
2. cargo run --example session

Screenshot

[lrlna]

@yoshuawuyts when you store a session you should be updating an already existing session.

So this line here should do a find_one_and_update.

Something to consider for store_session function is whether this session would already exist when you store it, or there is a possibility of a brand new session. If there is a possibility of a brand new session, I'd do something like this:

• find_one_and_update. If there are no results returned, you know that this session doesn't exist.
• if the session doesn't exist, insert_one instead.

[mbroadst]

@lrlna sounds like you're talking about an upsert here, perhaps you're looking for replace_one

[yoshuawuyts]

@lrlna @mbroadst thanks heaps; tested and filed a fix in #4 🎉

[lrlna]

@mbroadst i was precisely looking for an upsert but couldn't find replace_one in docs.rs 🤦‍♀️