fix!: remove @libp2p/components (#90)

`@libp2p/components` is a choke-point for our dependency graph as it depends on every interface, meaning when one interface revs a major `@libp2p/components` major has to change too which means every module depending on it also needs a major.

Switch instead to constructor injection of simple objects that let modules declare their dependencies on interfaces directly instead of indirectly via `@libp2p/components`

Refs libp2p/js-libp2p-components#6

BREAKING CHANGE: modules no longer implement `Initializable` instead switching to constructor injection

README.md

@@ -1,10 +1,9 @@
 # @libp2p/delegated-peer-routing <!-- omit in toc -->
 
 [![libp2p.io](https://img.shields.io/badge/project-libp2p-yellow.svg?style=flat-square)](http://libp2p.io/)
-[![IRC](https://img.shields.io/badge/freenode-%23libp2p-yellow.svg?style=flat-square)](http://webchat.freenode.net/?channels=%23libp2p)
 [![Discuss](https://img.shields.io/discourse/https/discuss.libp2p.io/posts.svg?style=flat-square)](https://discuss.libp2p.io)
 [![codecov](https://img.shields.io/codecov/c/github/libp2p/js-libp2p-delegated-peer-routing.svg?style=flat-square)](https://codecov.io/gh/libp2p/js-libp2p-delegated-peer-routing)
-[![CI](https://img.shields.io/github/workflow/status/libp2p/js-libp2p-interfaces/test%20&%20maybe%20release/master?style=flat-square)](https://github.com/libp2p/js-libp2p-delegated-peer-routing/actions/workflows/js-test-and-release.yml)
+[![CI](https://img.shields.io/github/workflow/status/libp2p/js-libp2p-delegated-peer-routing/test%20&%20maybe%20release/master?style=flat-square)](https://github.com/libp2p/js-libp2p-delegated-peer-routing/actions/workflows/js-test-and-release.yml)
 
 > Leverage other peers in the libp2p network to perform Peer Routing calls.
 
@@ -37,30 +36,28 @@ npm install ipfs-http-client libp2p-delegated-peer-routing
 ## Example
 
 ```js
-import { createEd25519PeerId } from '@libp2p/peer-id-factory'
-import { DelegatedPeerRouting } from '@libp2p/delegated-peer-routing')
+import { createLibp2p } from 'libp2p'
+import { delegatedPeerRouting } from '@libp2p/delegated-peer-routing')
 import { create as createIpfsHttpClient } from 'ipfs-http-client')
 
 // default is to use ipfs.io
-const routing = new DelegatedPeerRouting(createIpfsHttpClient({
+const client = createIpfsHttpClient({
   // use default api settings
   protocol: 'https',
   port: 443,
   host: 'node0.delegate.ipfs.io'
-}))
-
-try {
-  for await (const event of routing.findPeer('peerid')) {
-    console.log('query event', event)
-  }
-} catch (err) {
-  console.error(err)
-}
-
-const peerId = await createEd25519PeerId()
-for await (const event of routing.getClosestPeers(peerId.id)) {
-  console.log('query event', event)
-}
+})
+
+const node = await createLibp2p({
+  peerRouting: [
+    delegatedPeerRouting(client)
+  ]
+  //.. other config
+})
+await node.start()
+
+const peerInfo = await node.peerRouting.findPeer('peerid')
+console.log('peerInfo', peerInfo)
 ```
 
 ## License

package.json

@@ -143,7 +143,7 @@
     "@libp2p/peer-id": "^1.1.11",
     "any-signal": "^3.0.1",
     "err-code": "^3.0.1",
-    "multiformats": "^9.6.3",
+    "multiformats": "^10.0.0",
     "p-defer": "^4.0.0",
     "p-queue": "^7.2.0"
   },
@@ -155,7 +155,8 @@
     "ipfsd-ctl": "^12.0.2",
     "it-all": "^1.0.6",
     "it-drain": "^1.0.5",
-    "uint8arrays": "^3.0.0",
+    "timeout-abort-controller": "^3.0.0",
+    "uint8arrays": "^4.0.2",
     "wherearewe": "^2.0.1"
   },
   "browser": {

src/index.ts

@@ -5,7 +5,6 @@ import defer from 'p-defer'
 import errCode from 'err-code'
 import anySignal from 'any-signal'
 import type { PeerId } from '@libp2p/interface-peer-id'
-import type { IPFSHTTPClient, HTTPClientExtraOptions } from 'ipfs-http-client'
 import type { AbortOptions } from 'ipfs-core-types/src/utils'
 import type { PeerRouting } from '@libp2p/interface-peer-routing'
 import type { PeerInfo } from '@libp2p/interface-peer-info'
@@ -17,16 +16,115 @@ const log = logger('libp2p-delegated-peer-routing')
 const DEFAULT_TIMEOUT = 30e3 // 30 second default
 const CONCURRENT_HTTP_REQUESTS = 4
 
-export class DelegatedPeerRouting implements PeerRouting, Startable {
-  private readonly client: IPFSHTTPClient
+export interface HTTPClientExtraOptions {
+  headers?: Record<string, string>
+  searchParams?: URLSearchParams
+}
+
+export enum EventTypes {
+  SENDING_QUERY = 0,
+  PEER_RESPONSE,
+  FINAL_PEER,
+  QUERY_ERROR,
+  PROVIDER,
+  VALUE,
+  ADDING_PEER,
+  DIALING_PEER
+}
+
+/**
+ * The types of messages set/received during DHT queries
+ */
+export enum MessageType {
+  PUT_VALUE = 0,
+  GET_VALUE,
+  ADD_PROVIDER,
+  GET_PROVIDERS,
+  FIND_NODE,
+  PING
+}
+
+export type MessageName = keyof typeof MessageType
+
+export interface DHTRecord {
+  key: Uint8Array
+  value: Uint8Array
+  timeReceived?: Date
+}
+
+export interface SendingQueryEvent {
+  type: EventTypes.SENDING_QUERY
+  name: 'SENDING_QUERY'
+}
+
+export interface PeerResponseEvent {
+  from: PeerId
+  type: EventTypes.PEER_RESPONSE
+  name: 'PEER_RESPONSE'
+  messageType: MessageType
+  messageName: MessageName
+  providers: PeerInfo[]
+  closer: PeerInfo[]
+  record?: DHTRecord
+}
+
+export interface FinalPeerEvent {
+  peer: PeerInfo
+  type: EventTypes.FINAL_PEER
+  name: 'FINAL_PEER'
+}
+
+export interface QueryErrorEvent {
+  type: EventTypes.QUERY_ERROR
+  name: 'QUERY_ERROR'
+  error: Error
+}
+
+export interface ProviderEvent {
+  type: EventTypes.PROVIDER
+  name: 'PROVIDER'
+  providers: PeerInfo[]
+}
+
+export interface ValueEvent {
+  type: EventTypes.VALUE
+  name: 'VALUE'
+  value: Uint8Array
+}
+
+export interface AddingPeerEvent {
+  type: EventTypes.ADDING_PEER
+  name: 'ADDING_PEER'
+  peer: PeerId
+}
+
+export interface DialingPeerEvent {
+  peer: PeerId
+  type: EventTypes.DIALING_PEER
+  name: 'DIALING_PEER'
+}
+
+export type QueryEvent = SendingQueryEvent | PeerResponseEvent | FinalPeerEvent | QueryErrorEvent | ProviderEvent | ValueEvent | AddingPeerEvent | DialingPeerEvent
+
+export interface Delegate {
+  getEndpointConfig: () => { protocol: string, host: string, port: string }
+
+  dht: {
+    findPeer: (peerId: PeerId, options?: AbortOptions) => AsyncIterable<QueryEvent>
+    query: (peerId: PeerId | CID, options?: AbortOptions) => AsyncIterable<QueryEvent>
+  }
+}
+
+class DelegatedPeerRouting implements PeerRouting, Startable {
+  private readonly client: Delegate
   private readonly httpQueue: PQueue
   private started: boolean
   private abortController: AbortController
 
   /**
    * Create a new DelegatedPeerRouting instance
    */
-  constructor (client: IPFSHTTPClient) {
+  constructor (client: Delegate) {
     if (client == null) {
       throw new Error('missing ipfs http client')
     }
@@ -153,3 +251,7 @@ export class DelegatedPeerRouting implements PeerRouting, Startable {
     }
   }
 }
+
+export function delegatedPeerRouting (client: Delegate): (components?: any) => PeerRouting {
+  return () => new DelegatedPeerRouting(client)
+}