MongoDB driver for the Linux app #3646

Problem

The Linux app has no MongoDB driver (linux/README.md, Status), while the macOS app opens MongoDB connections through its plugin.

linux/ROADMAP.md, Backlog, More engines lists MongoDB with the client, mongodb 3.x with default features off and rustls-tls-aws-lc, and one condition: "It must use the system trust store first: it fills its roots from webpki-roots unless ca_file_path is set, so it needs native roots upstream or ca_file_path set to the platform bundle."

Like Redis, MongoDB does not speak SQL, and the driver contract assumes SQL through SqlDialect and SqlGrammar (linux/docs/adding-drivers.md, section 7).

Proposed solution

• Meet the trust store condition first: native roots in the mongodb crate upstream, or ca_file_path pointed at the system bundle, so a server certificate is checked against the same roots as the other engines (ADR 0009).
• A crates/drivers/mongodb crate reached through the app's transport. Through an SSH tunnel, connect to the one host with directConnection, since replica set members advertise names the tunnel does not reach.
• Decide how documents fit the grid and the editor, and record it in linux/docs/adding-drivers.md:
  • the sidebar lists databases and collections;
  • a collection opens as a grid of top-level fields, with nested documents and arrays shown as JSON and edited as JSON, checked before saving, as JSON cells are today;
  • the editor runs find and aggregate style queries with their own grammar, and the history check skips any that carry credentials.
• Read-only connections refuse writes before they are sent, including aggregate with $out or $merge.
• Stop a running operation with killOp or by closing the cursor, as the contract requires.
• The conformance suites that apply, a Docker fixture with a replica set, and a page in linux/docs/drivers/.

Done means: a MongoDB connection, direct, through an SSH tunnel or with mongodb+srv://, lists collections, pages documents and edits a field, and the adding-drivers.md checklist is complete.

Alternatives considered

No response

Platform

Linux

Related database type

MongoDB