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maciejhirsz
2018-07-06 17:53:42 +02:00
parent 6fe1e47082
commit 538a30ccc3
20 changed files with 1005 additions and 1001 deletions
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packages/common/src/feed.ts
+81 -81
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@@ -2,88 +2,88 @@ import { Opaque } from './helpers';
import { NodeId, NodeDetails, NodeStats, BlockNumber, BlockDetails, Timestamp, ChainLabel } from './types';
export const Actions = {
BestBlock: 0 as 0,
AddedNode: 1 as 1,
RemovedNode: 2 as 2,
ImportedBlock: 3 as 3,
NodeStats: 4 as 4,
TimeSync: 5 as 5,
AddedChain: 6 as 6,
RemovedChain: 7 as 7,
SubscribedTo: 8 as 8,
UnsubscribedFrom: 9 as 9
BestBlock: 0 as 0,
AddedNode: 1 as 1,
RemovedNode: 2 as 2,
ImportedBlock: 3 as 3,
NodeStats: 4 as 4,
TimeSync: 5 as 5,
AddedChain: 6 as 6,
RemovedChain: 7 as 7,
SubscribedTo: 8 as 8,
UnsubscribedFrom: 9 as 9
};
export type Action = typeof Actions[keyof typeof Actions];
export type Payload = Message['payload'];
export namespace Variants {
export interface MessageBase {
action: Action;
}
export interface MessageBase {
action: Action;
}
export interface BestBlockMessage extends MessageBase {
action: typeof Actions.BestBlock;
payload: [BlockNumber, Timestamp];
}
export interface BestBlockMessage extends MessageBase {
action: typeof Actions.BestBlock;
payload: [BlockNumber, Timestamp];
}
export interface AddedNodeMessage extends MessageBase {
action: typeof Actions.AddedNode;
payload: [NodeId, NodeDetails, NodeStats, BlockDetails];
}
export interface AddedNodeMessage extends MessageBase {
action: typeof Actions.AddedNode;
payload: [NodeId, NodeDetails, NodeStats, BlockDetails];
}
export interface RemovedNodeMessage extends MessageBase {
action: typeof Actions.RemovedNode;
payload: NodeId;
}
export interface RemovedNodeMessage extends MessageBase {
action: typeof Actions.RemovedNode;
payload: NodeId;
}
export interface ImportedBlockMessage extends MessageBase {
action: typeof Actions.ImportedBlock;
payload: [NodeId, BlockDetails];
}
export interface ImportedBlockMessage extends MessageBase {
action: typeof Actions.ImportedBlock;
payload: [NodeId, BlockDetails];
}
export interface NodeStatsMessage extends MessageBase {
action: typeof Actions.NodeStats;
payload: [NodeId, NodeStats];
}
export interface NodeStatsMessage extends MessageBase {
action: typeof Actions.NodeStats;
payload: [NodeId, NodeStats];
}
export interface TimeSyncMessage extends MessageBase {
action: typeof Actions.TimeSync;
payload: Timestamp;
}
export interface TimeSyncMessage extends MessageBase {
action: typeof Actions.TimeSync;
payload: Timestamp;
}
export interface AddedChainMessage extends MessageBase {
action: typeof Actions.AddedChain;
payload: ChainLabel;
}
export interface AddedChainMessage extends MessageBase {
action: typeof Actions.AddedChain;
payload: ChainLabel;
}
export interface RemovedChainMessage extends MessageBase {
action: typeof Actions.RemovedChain;
payload: ChainLabel;
}
export interface RemovedChainMessage extends MessageBase {
action: typeof Actions.RemovedChain;
payload: ChainLabel;
}
export interface SubscribedToMessage extends MessageBase {
action: typeof Actions.SubscribedTo;
payload: ChainLabel;
}
export interface SubscribedToMessage extends MessageBase {
action: typeof Actions.SubscribedTo;
payload: ChainLabel;
}
export interface UnsubscribedFromMessage extends MessageBase {
action: typeof Actions.UnsubscribedFrom;
payload: ChainLabel;
}
export interface UnsubscribedFromMessage extends MessageBase {
action: typeof Actions.UnsubscribedFrom;
payload: ChainLabel;
}
}
export type Message =
| Variants.BestBlockMessage
| Variants.AddedNodeMessage
| Variants.RemovedNodeMessage
| Variants.ImportedBlockMessage
| Variants.NodeStatsMessage
| Variants.TimeSyncMessage
| Variants.AddedChainMessage
| Variants.RemovedChainMessage
| Variants.SubscribedToMessage
| Variants.UnsubscribedFromMessage;
| Variants.BestBlockMessage
| Variants.AddedNodeMessage
| Variants.RemovedNodeMessage
| Variants.ImportedBlockMessage
| Variants.NodeStatsMessage
| Variants.TimeSyncMessage
| Variants.AddedChainMessage
| Variants.RemovedChainMessage
| Variants.SubscribedToMessage
| Variants.UnsubscribedFromMessage;
/**
* Opaque data type to be sent to the feed. Passing through
@@ -100,36 +100,36 @@ export type Data = Opaque<string, 'FeedMessage.Data'>;
* Action `string`s are converted to opcodes using the `actionToCode` mapping.
*/
export function serialize(messages: Array<Message>): Data {
const squashed = new Array(messages.length * 2);
let index = 0;
const squashed = new Array(messages.length * 2);
let index = 0;
messages.forEach((message) => {
const { action, payload } = message;
messages.forEach((message) => {
const { action, payload } = message;
squashed[index++] = action;
squashed[index++] = payload;
})
squashed[index++] = action;
squashed[index++] = payload;
})
return JSON.stringify(squashed) as Data;
return JSON.stringify(squashed) as Data;
}
/**
* Deserialize data to an array of `Message`s.
*/
export function deserialize(data: Data): Array<Message> {
const json: Array<Action | Payload> = JSON.parse(data);
const json: Array<Action | Payload> = JSON.parse(data);
if (!Array.isArray(json) || json.length === 0 || json.length % 2 !== 0) {
throw new Error('Invalid FeedMessage.Data');
}
if (!Array.isArray(json) || json.length === 0 || json.length % 2 !== 0) {
throw new Error('Invalid FeedMessage.Data');
}
const messages: Array<Message> = new Array(json.length / 2);
const messages: Array<Message> = new Array(json.length / 2);
for (const index of messages.keys()) {
const [ action, payload ] = json.slice(index * 2);
for (const index of messages.keys()) {
const [ action, payload ] = json.slice(index * 2);
messages[index] = { action, payload } as Message;
}
messages[index] = { action, payload } as Message;
}
return messages;
return messages;
}