yabamo-cli

CLI wrapper for the @jbp/yabamo-core library.

Installation

npm install -g @jbp/yabamo-cli

Usage

Starting API engine

$ yabamo-cli start --config config.json

where config.json is a .json file describing accessible paths and possible responses for your fake backend. A minimal config file would look something like this:

{
    "engineName": "testAPI",
    "port": "9000",
    "routes": [
        {
            "path": "/",
            "responses": {
                "default": "hello world!"
            }
        }
    ]
}

This very basic API responds to any request on its root (http://localhost:9000) with a simple "hello world!" string.

You can provide the name of the API engine with --engine option:

$ yabamo-cli start --config config.json --engine Engine1

It overrides the name provided in config and if none exists, the CLI will exit with error.

Stopping API engine

$ yabamo-cli stop --engine testAPI will stop the API engine named testAPI (if running).

$ yabamo-cli stopall will stop all running engines.

List running engines

$ yabamo-core list will print a list of running API engines.

Manipulate debug mode on engine

This is probably not a good idea when running yabamo from CLI! see Debug mode.

You can use debug command to set or toggle debug mode on a certain route of an engine.

You need to provide name of the engine with --engine, the path and the method with --path and --method and you can optionally set true or false by providing it as an argument.

Examples:

$ yabamo-cli debug true -e testAPI -m GET -p / will set debug mode to true on the GET / route of the API called testAPI. Omitting true or false will toggle the value; if debug mode was on, itt will turn it off and vice versa.

Change response on engine

With changeresponse command you can override the response sent by a certain API endpoint. For example, let's say you augment the above configuration with a response named other like this:

"responses": {
    "default": "hello world!",
    "other": "HELLLO World!!"
}

In this case, by typing $ yabamo-cli changeresponse -e testAPI -m GET -p / -r other you can switch the current response to other. From now on your API will respond with HELLLO World! when someone GETs the path / (e.g. loads http://localhost:9000 in her browser).

Configuration

• engineName: optional, you can provide a name on start with --engine (or -e) option. If you fail to provide the name of the API engine either way, the CLI will exit with error.
• port: required, the port number your API will use.
• routes: required, an Array of routes.
• fallback: optional, this is the response your API will use if no route has been found (your 404 response if you will).

Routes

• path: required
• method: optional, defaults to GET
• responses: required, a key=>value map where key is the name of the response, value is the response itself.
• currentResponse: optional, could be the name of one of the responses.

Method

Possible values: GET, POST, PUT, DELETE and OPTIONS

Responses

Every response is named. If there is only one response defined, it will be used. If there is more than one but no other indication of which one to use it will default to the first one. If there is a response named default, it will have preference over other responses. If there is a currentResponse defined, it will have preference over everything else.

If the response is a string or a number it will be stringified and sent with res.send(). If it is an Object or an Array it will be sent with res.json().

Debug

You can set debug mode on any route. This means that when a request arrives to that route the API will pause and wait either for instruction regarding which possible response to send or until timeout. Default timeout is 30 seconds, you can overwrite it with debugTimeout (in milliseconds). This means that running yabamo from the CLI with a configuration containing debug:true on any route or setting debug mode later leads to a situation where requests may be delayed. Use it carefully!