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Merge pull request #445 from reduxjs/redux-devtools-app
Move remotedev-app and remotedev-server
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.DS_Store | ||
lib | ||
dist | ||
umd | ||
build | ||
coverage | ||
.idea |
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## Remote monitoring | ||
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By installing [`redux-devtools-cli`](https://github.com/reduxjs/redux-devtools/tree/master/packages/redux-devtools-cli#usage), starting the server server and launching the Redux DevTools app (`redux-devtools --open`), you can connect any remote application, even not javascript. There are some integrations for javascript like [remote-redux-devtools](https://github.com/zalmoxisus/remote-redux-devtools) and [remotedev](https://github.com/zalmoxisus/remotedev), but the plan is to deprecate them and support it out of the box from the extension without a websocket server. It is more useful for non-js apps. | ||
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### WebSocket Clients | ||
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We're using [SocketCluster](http://socketcluster.io/) for realtime communication, which provides a fast and scalable webSocket layer and a minimal pub/sub system. You need to include one of [its clients](https://github.com/SocketCluster/client-drivers) in your app to communicate with RemotedevServer. Currently there are clients for [JavaScript (NodeJS)](https://github.com/SocketCluster/socketcluster-client), [Java](https://github.com/sacOO7/socketcluster-client-java), [Python](https://github.com/sacOO7/socketcluster-client-python), [C](https://github.com/sacOO7/socketcluster-client-C), [Objective-C](https://github.com/abpopov/SocketCluster-ios-client) and [.NET/C#](https://github.com/sacOO7/SocketclusterClientDotNet). | ||
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By default, the websocket server is running on `ws://localhost:8000/socketcluster/`. | ||
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### Messaging lifecycle | ||
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#### 1. Connecting to the WebSocket server | ||
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The client driver provides a way to connect to the server via websockets (see the docs for the selected client). | ||
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##### JavaScript | ||
```js | ||
var socket = socketCluster.connect({ | ||
hostname: 'localhost', | ||
port: 8000 | ||
}); | ||
``` | ||
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##### Python | ||
```py | ||
socket = Socketcluster.socket("ws://localhost:8000/socketcluster/") | ||
socket.connect() | ||
``` | ||
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> Note that JavaScript client composes the url from `hostname` and `port`, adding `/socketcluster/` path automatically. For other clients, you should specify that path. For example, for `ObjectiveC` it would be `self.client.initWithHost("localhost/socketcluster/", onPort: 8000, securely: false)`. | ||
#### 2. Disconnecting and reconnecting | ||
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SocketCluster client handles reconnecting for you, but you still might want to know when the connection is established, or when it failed to connect. | ||
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##### JavaScript | ||
```js | ||
socket.on('connect', status => { | ||
// Here will come the next step | ||
}); | ||
socket.on('disconnect', code => { | ||
console.warn('Socket disconnected with code', code); | ||
}); | ||
socket.on('error', error => { | ||
console.warn('Socket error', error); | ||
}); | ||
``` | ||
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##### Python | ||
```py | ||
def onconnect(socket): | ||
// Here will call the next step | ||
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def ondisconnect(socket): | ||
logging.info("on disconnect got called") | ||
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def onConnectError(socket, error): | ||
logging.info("On connect error got called") | ||
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socket.setBasicListener(onconnect, ondisconnect, onConnectError) | ||
``` | ||
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#### 3. Authorizing and subscribing to the channel of events | ||
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We're not providing an authorizing mechanism yet. All you have to do is to emit a `login` event, and you'll get a `channelName` you should subscribe for, and watch for messages and events. Make sure to pass the `master` event, otherwise it should be a monitor, not a client app. | ||
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##### JavaScript | ||
```js | ||
socket.emit('login', 'master', (error, channelName) => { | ||
if (error) { console.log(error); return; } | ||
channel = socket.subscribe(channelName); | ||
channel.watch(handleMessages); | ||
socket.on(channelName, handleMessages); | ||
}); | ||
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function handleMessages(message) { | ||
// 5. Listening for monitor events | ||
} | ||
``` | ||
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##### Python | ||
```py | ||
socket.emitack("login", "master", login) | ||
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def login(key, error, channelName): | ||
socket.subscribe(channelName) | ||
socket.onchannel(channelName, handleMessages) | ||
socket.on(channelName, handleMessages) | ||
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def handleMessages(key, message): | ||
// 5. Listening for monitor events | ||
``` | ||
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You could just emit the `login` event, and omit subscribing (and point `5` bellow) if you want only to log data, not to interact with te app. | ||
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#### 4. Sending the action and state to the monitor | ||
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To send your data to the monitor use `log` or `log-noid` channel. The latter will add the socket id to the message from the server side (useful when the message was sent before the connection was established). | ||
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The message object includes the following: | ||
- `type` - usually should be `ACTION`. If you want to indicate that we're starting a new log (clear all actions emitted before and add `@@INIT`), use `INIT`. In case you have a lifted state similar to one provided by [`redux-devtools-instrument`](https://github.com/zalmoxisus/redux-devtools-instrument), use `STATE`. | ||
- `action` - the action object. It is recommended to lift it in another object, and add `timestamp` to show when the action was fired off: `{ timestamp: Date.now(), action: { type: 'SOME_ACTION' } }`. | ||
- `payload` - usually the state or lifted state object. | ||
- `name` - name of the instance to be shown in the instances selector. If not provided, it will be equal to `instanceId`. | ||
- `instanceId` - an id to identify the instance. If not provided, it will be the same as `id`. However, it is useful when having several instances (or stores) in the same connection. Also if the user will specify a constant value, it would allow to persist the state on app reload. | ||
- `id` - socket connection id, which should be either `socket.id` or should not provided and use `log-noid` channel. | ||
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##### JavaScript | ||
```js | ||
const message = { | ||
type: 'ACTION', | ||
action: { action, timestamp: Date.now() }, | ||
payload: state, | ||
id: socket.id, | ||
instanceId: window.btoa(location.href), | ||
name: document.title | ||
}; | ||
socket.emit(socket.id ? 'log' : 'log-noid', message); | ||
``` | ||
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##### Python | ||
```py | ||
class Message: | ||
def __init__(self, action, state): | ||
self.type = "ACTION" | ||
self.action = action | ||
self.payload = state | ||
id: socket.id | ||
socket.emit(socket.id if "log" else "log-noid", Message(action, state)); | ||
``` | ||
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#### 5. Listening for monitor events | ||
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When a monitor action is emitted, you'll get an event on the subscribed function. The argument object includes a `type` key, which can be: | ||
- `DISPATCH` - a monitor action dispatched on Redux DevTools monitor, like `{ type: 'DISPATCH', payload: { type: 'JUMP_TO_STATE', 'index': 2 }`. See [`redux-devtools-instrument`](https://github.com/zalmoxisus/redux-devtools-instrument/blob/master/src/instrument.js) for details. Additionally to that API, you'll get also a stringified `state` object when needed. So, for example, for time travelling (`JUMP_TO_STATE`) you can just parse and set the state (see the example). Usually implementing this type of actions would be enough. | ||
- `ACTION` - the user requested to dispatch an action remotely like `{ type: 'ACTION', action: '{ type: \'INCREMENT_COUNTER\' }' }`. The `action` can be either a stringified javascript object which should be evalled or a function which arguments should be evalled like [here](https://github.com/zalmoxisus/remotedev-utils/blob/master/src/index.js#L62-L70). | ||
- `START` - a monitor was opened. You could handle this event in order not to do extra tasks when the app is not monitored. | ||
- `STOP` - a monitor was closed. You can take this as no need to send data to the monitor. I there are several monitors and one was closed, all others will send `START` event to acknowledge that we still have to send data. | ||
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See [`mobx-remotedev`](https://github.com/zalmoxisus/mobx-remotedev/blob/master/src/monitorActions.js) for an example of implementation without [`redux-devtools-instrument`](https://github.com/zalmoxisus/redux-devtools-instrument/blob/master/src/instrument.js). | ||
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##### JavaScript | ||
```js | ||
function handleMessages(message) { | ||
if (message.type === 'DISPATCH' && message.payload.type === 'JUMP_TO_STATE') { | ||
store.setState(JSON.parse(message.state)); | ||
} | ||
} | ||
``` | ||
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##### Python | ||
```py | ||
def handleMessages(key, message): | ||
if message.type === "DISPATCH" and message.payload.type === "JUMP_TO_STATE": | ||
store.setState(json.loads(message.state)); | ||
``` |
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The MIT License (MIT) | ||
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Copyright (c) 2016 Mihail Diordiev | ||
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Permission is hereby granted, free of charge, to any person obtaining a copy | ||
of this software and associated documentation files (the "Software"), to deal | ||
in the Software without restriction, including without limitation the rights | ||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
copies of the Software, and to permit persons to whom the Software is | ||
furnished to do so, subject to the following conditions: | ||
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The above copyright notice and this permission notice shall be included in all | ||
copies or substantial portions of the Software. | ||
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
SOFTWARE. |
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