Editing handlers.go

Add one new property to the Chatt struct in handlers.go:

type Chatt struct {
    // . . .
    Geodata  *string    `json:"geodata"`
}

As with Audio data in the previous lab, Geodata is just a string to the back-end server, set to type *string to allow for nil.

Make a copy of your postaudio() in handlers.go and call it postmaps(). In the newly copied postmaps(), find the one occurence of Audio and replace it with Geodata.

Next, make a copy of your getaudio() inside your handlers.go and name the copy getmaps(). In the newly copied getmaps(), find all two occurences of Audio and replace each with Geodata.

Save and exit handlers.go.

Routing for new URLs

For the newly added getmaps() and postmaps() functions, add the following new routes to the routes array in main.go:

var routes = []Route {
    // . . .
    {"GET", "/getmaps/", getmaps},
    {"POST", "/postmaps/", postmaps},
}

Save and exit main.go.

Go is a compiled language, like C/C++ and unlike Python, which is an interpreted language. This means you must run go build each and every time you made changes to your code, for the changes to show up in your executable.

Rebuild and restart chatterd:

server$ go build
server$ sudo systemctl restart chatterd

Editing handlers.ts

Add one new property to the Chatt struct in handlers.ts:

interface Chatt {
    // . . .
    geodata: string | null

As with the audio data in the previous lab, geodata is just a string to the back-end server.

Make a copy of your postaudio() in handlers.ts and call it postmaps(). In the newly copied postmaps(), find the two occurences of audio and replace them both with geodata.

Next, make a copy of your getaudio() in your handlers.ts and name the copy getmaps(). In the newly copied getmaps(), find the one occurence of audio and replace it with geodata.

Save and exit handlers.ts.

Routing for new URLs

For the newly added getmaps() and postmaps() functions, add the following new routes to the Express app instantiation in main.ts:

      .get('/getmaps/', handlers.getmaps)
      .post('/postmaps/', handlers.postmaps)

Save and exit main.ts. Rebuild and restart chatterd:

server$ npx tsc
server$ sudo systemctl restart chatterd

Editing handlers.py

Add one new property to the Chatt struct in handlers.py:

class Chatt:
    // . . .
    geodata: Optional[str] = None

As with the audio data in the previous lab, geodata is just a string to the back-end server.

Make a copy of your postaudio() in handlers.py and call it postmaps(). In the newly copied postmaps(), find the two occurences of audio and replace them both with geodata.

Next, make a copy of your getaudio() in your handlers.py and name the copy getmaps(). In the newly copied getmaps(), find the one occurence of audio and replace it with geodata.

Save and exit handlers.py.

Routing for new urls

For the newly added getmaps() and postmaps() functions, add the following new routes to the routes array in main.py:

    Route('/getmaps/', handlers.getmaps, methods=['GET']),
    Route('/postmaps/', handlers.postmaps, methods=['POST']),

Save and exit main.py and restart chatterd:

server$ sudo systemctl restart chatterd

Editing handlers.rs

Add one new property to the Chatt struct in handlers.rs:

pub struct Chatt {
    // . . .
    geodata: Option<String>,
}

As with audio in the previous lab, the audio data is just a string to the back-end server.

Make a copy of your postaudio() in handlers.rs and call it postmaps(). In the newly copied postmaps(), find the two occurences of audio and replace both with geodata.

Next, make a copy of your getaudio() inside your handlers.rs and name the copy getmaps(). In the newly copied getmaps(), find the one occurence of audio and replace it with geodata.

Save and exit handlers.rs.

Routing for new URLs

For the newly added getmaps() and postmaps() functions, add the following new routes to the Router instantiation of the router variable in main.rs, before the .layer(/*...*/) line:

        .route("/getmaps/", get(handlers::getmaps))
        .route("/postmaps/", post(handlers::postmaps))

Save and exit main.rs. Rebuild and restart chatterd:

server$ cargo build --release
server$ sudo systemctl restart chatterd