@daostack/client › Globals › Arc

Class: Arc

The Arc class holds all configuration. Any useage of the library typically will start with instantiating a new Arc instance

returns an instance of Arc

Hierarchy

• GraphNodeObserver

  ↳ Arc

Index

Constructors

• constructor

Properties

• Logger
• apolloClient
• blockHeaderSubscription
• contractInfos
• contracts
• contractsR
• graphqlHttpProvider
• graphqlSubscribeToQueries
• graphqlWsProvider
• ipfs
• ipfsProvider
• observedAccounts
• pendingOperations
• web3
• web3Provider
• web3ProviderRead
• web3Read

Methods

• GENToken
• allowance
• approveForStaking
• dao
• daos
• ethBalance
• events
• fetchContractInfos
• getABI
• getAccount
• getContract
• getContractInfo
• getContractInfoByName
• getObservable
• getObservableList
• getObservableListWithFilter
• getObservableObject
• proposal
• proposals
• saveIPFSData
• scheme
• schemes
• sendQuery
• sendTransaction
• setAccount
• setContractInfos
• tags

Constructors

constructor

+ new Arc(options: object): Arc

Overrides GraphNodeObserver.constructor

Defined in arc.ts:51

Parameters:

▪ options: object

Name	Type	Description
contractInfos?	IContractInfo[]	Information about the contracts. Cf. setContractInfos and fetchContractInfos
graphqlHttpProvider?	undefined | string	-
graphqlPrefetchHook?	undefined | function	this function will be called before a query is sent to the graphql provider
graphqlSubscribeToQueries?	undefined | false | true	determines whether a query should subscribe to updates from the graphProvider. Default is true.
graphqlWsProvider?	undefined | string	-
ipfsProvider?	IPFSProvider	-
web3Provider?	undefined | string	-
web3ProviderRead?	undefined | string	-

Returns: Arc

Properties

Logger

• Logger: GlobalLogger = Logger

Inherited from GraphNodeObserver.Logger

Defined in graphnode.ts:117

---

Optional apolloClient

• apolloClient? : ApolloClient‹object›

Inherited from GraphNodeObserver.apolloClient

Defined in graphnode.ts:118

---

blockHeaderSubscription

• blockHeaderSubscription: Subscription | undefined = undefined

Defined in arc.ts:44

---

contractInfos

• contractInfos: IContractInfo[]

Defined in arc.ts:39

a mapping of contrct names to contract addresses

---

contracts

• contracts: object

Defined in arc.ts:40

Type declaration:

• [ key: string]: any

---

contractsR

• contractsR: object

Defined in arc.ts:41

Type declaration:

• [ key: string]: any

---

Optional graphqlHttpProvider

• graphqlHttpProvider? : undefined | string

Inherited from GraphNodeObserver.graphqlHttpProvider

Defined in graphnode.ts:115

---

Optional graphqlSubscribeToQueries

• graphqlSubscribeToQueries? : undefined | false | true

Inherited from GraphNodeObserver.graphqlSubscribeToQueries

Defined in graphnode.ts:119

---

Optional graphqlWsProvider

• graphqlWsProvider? : undefined | string

Inherited from GraphNodeObserver.graphqlWsProvider

Defined in graphnode.ts:116

---

ipfs

• ipfs: any

Defined in arc.ts:33

---

ipfsProvider

• ipfsProvider: IPFSProvider

Defined in arc.ts:29

---

observedAccounts

• observedAccounts: object

Defined in arc.ts:45

Type declaration:

• [ address: string]: object

• lastBalance? : undefined | string

• observable? : Observable‹BN›

• observer? : Observer‹BN›

• subscriptionsCount: number

---

pendingOperations

• pendingOperations: Observable‹Array‹Operation‹any››› = of()

Defined in arc.ts:31

---

web3

• web3: any

Defined in arc.ts:34

---

web3Provider

• web3Provider: Web3Provider = ""

Defined in arc.ts:27

---

web3ProviderRead

• web3ProviderRead: Web3Provider = ""

Defined in arc.ts:28

---

web3Read

• web3Read: any

Defined in arc.ts:35

Methods

GENToken

▸ GENToken(): Token‹›

Defined in arc.ts:341

get the GEN Token

Returns: Token‹›

a Token instance

---

allowance

▸ allowance(owner: Address, spender: Address): Observable‹BN›

Defined in arc.ts:402

How much GEN spender may spend on behalve of the owner

Parameters:

Name	Type	Description
owner	Address	Address of the owner of the tokens
spender	Address	Address of the spender

Returns: Observable‹BN›

---

approveForStaking

▸ approveForStaking(spender: Address, amount: BN): IOperationObservable‹ITransactionUpdate‹any››

Defined in arc.ts:392

Parameters:

Name	Type
spender	Address
amount	BN

Returns: IOperationObservable‹ITransactionUpdate‹any››

---

dao

▸ dao(address: Address): DAO

Defined in arc.ts:134

get a DAO instance from an address

Parameters:

Name	Type	Description
address	Address	address of the dao Avatar

Returns: DAO

an instance of a DAO

---

daos

▸ daos(options: IDAOQueryOptions, apolloQueryOptions: IApolloQueryOptions): Observable‹DAO[]›

Defined in arc.ts:144

return an observable of the list of DAOs

Parameters:

Name	Type	Default	Description
options	IDAOQueryOptions	{}	options to pass on to the query
apolloQueryOptions	IApolloQueryOptions	{}	-

Returns: Observable‹DAO[]›

---

ethBalance

▸ ethBalance(owner: Address): Observable‹BN›

Defined in arc.ts:180

Parameters:

Name	Type
owner	Address

Returns: Observable‹BN›

---

events

▸ events(options: IEventQueryOptions, apolloQueryOptions: IApolloQueryOptions): Observable‹Event[]›

Defined in arc.ts:173

Parameters:

Name	Type	Default
options	IEventQueryOptions	{}
apolloQueryOptions	IApolloQueryOptions	{}

Returns: Observable‹Event[]›

---

fetchContractInfos

▸ fetchContractInfos(apolloQueryOptions: IApolloQueryOptions): Promise‹IContractInfo[]›

Defined in arc.ts:113

fetch contractInfos from the subgraph

Parameters:

Name	Type	Default
apolloQueryOptions	IApolloQueryOptions	{}

Returns: Promise‹IContractInfo[]›

a list of IContractInfo instances

---

getABI

▸ getABI(address?: Address, abiName?: undefined | string, version?: undefined | string): any

Defined in arc.ts:284

Parameters:

Name	Type
address?	Address
abiName?	undefined | string
version?	undefined | string

Returns: any

---

getAccount

▸ getAccount(): Observable‹Address›

Defined in arc.ts:354

Returns: Observable‹Address›

---

getContract

▸ getContract(address: Address, abi?: any, mode?: undefined | "readonly"): any

Defined in arc.ts:313

return a web3 Contract instance.

Parameters:

Name	Type	Description
address	Address	address of the contract to look up in self.contractInfos
abi?	any	-
mode?	undefined | "readonly"	-

Returns: any

a web3 contract instance

---

getContractInfo

▸ getContractInfo(address: Address): IContractInfo

Defined in arc.ts:259

return information about the contract

Parameters:

Name	Type
address	Address

Returns: IContractInfo

an IContractInfo instance

---

getContractInfoByName

▸ getContractInfoByName(name: string, version: string): IContractInfo

Defined in arc.ts:272

Parameters:

Name	Type
name	string
version	string

Returns: IContractInfo

---

getObservable

▸ getObservable(query: any, apolloQueryOptions: IApolloQueryOptions): any

Inherited from GraphNodeObserver.getObservable

Defined in graphnode.ts:145

Given a gql query, will return an observable of query results

Parameters:

Name	Type	Default	Description
query	any	-	a gql query object to execute
apolloQueryOptions	IApolloQueryOptions	{}	options to pass on to Apollo, cf ..

Returns: any

an Observable that will first yield the current result, and yields updates every time the data changes

---

getObservableList

▸ getObservableList(query: any, itemMap: function, apolloQueryOptions: IApolloQueryOptions): any

Inherited from GraphNodeObserver.getObservableList

Defined in graphnode.ts:246

Returns an observable that:

• sends a query over http and returns the current list of results
• subscribes over a websocket to changes, and returns the updated list.

example:

   const query = gql`
   {
     daos {
       id
       address
     }
   }`
   getObservableList(query, (r:any) => new DAO(r.address))

Parameters:

▪ query: any

The query to be run

▪Default value itemMap: function= (o) => o

(optional) a function that takes elements of the list and creates new objects

▸ (o: object): object | null

Parameters:

Name	Type
o	object

▪Default value apolloQueryOptions: IApolloQueryOptions= {}

Returns: any

an Observable

---

getObservableListWithFilter

▸ getObservableListWithFilter(query: any, itemMap: function, filterFunc: function, apolloQueryOptions: IApolloQueryOptions): any

Inherited from GraphNodeObserver.getObservableListWithFilter

Defined in graphnode.ts:285

Returns an observable that:

• sends a query over http and returns the current list of results
• subscribes over a websocket to changes, and returns the updated list example: const query = gql { daos { id address } } getObservableList(query, (r:any) => new DAO(r.address), filter((r:any) => r.address === "0x1234..."))

Parameters:

▪ query: any

The query to be run

▪Default value itemMap: function= (o) => o

(optional) a function that takes elements of the list and creates new objects

▸ (o: object): object | null

Parameters:

Name	Type
o	object

▪ filterFunc: function

▸ (o: object): boolean

Parameters:

Name	Type
o	object

▪Default value apolloQueryOptions: IApolloQueryOptions= {}

Returns: any

---

getObservableObject

▸ getObservableObject(query: any, itemMap: function, apolloQueryOptions: IApolloQueryOptions): any

Inherited from GraphNodeObserver.getObservableObject

Defined in graphnode.ts:302

Parameters:

▪ query: any

▪Default value itemMap: function= (o) => o

▸ (o: object): object | null

Parameters:

Name	Type
o	object

▪Default value apolloQueryOptions: IApolloQueryOptions= {}

Returns: any

---

proposal

▸ proposal(id: string): Proposal

Defined in arc.ts:163

Parameters:

Name	Type
id	string

Returns: Proposal

---

proposals

▸ proposals(options: IProposalQueryOptions, apolloQueryOptions: IApolloQueryOptions): Observable‹Proposal[]›

Defined in arc.ts:167

Parameters:

Name	Type	Default
options	IProposalQueryOptions	{}
apolloQueryOptions	IApolloQueryOptions	{}

Returns: Observable‹Proposal[]›

---

saveIPFSData

▸ saveIPFSData(options: object): Promise‹string›

Defined in arc.ts:427

save data of a proposal to IPFS, return the IPFS hash

Parameters:

▪ options: object

an Object to save. This object must have title, url and desction defined

Name	Type
description?	undefined | string
tags?	string[]
title?	undefined | string
url?	undefined | string

Returns: Promise‹string›

a Promise that resolves in the IPFS Hash where the file is saved

---

scheme

▸ scheme(id: string): Scheme

Defined in arc.ts:152

Parameters:

Name	Type
id	string

Returns: Scheme

---

schemes

▸ schemes(options: ISchemeQueryOptions, apolloQueryOptions: IApolloQueryOptions): Observable‹Scheme[]›

Defined in arc.ts:156

Parameters:

Name	Type	Default
options	ISchemeQueryOptions	{}
apolloQueryOptions	IApolloQueryOptions	{}

Returns: Observable‹Scheme[]›

---

sendQuery

▸ sendQuery(query: any, apolloQueryOptions: IApolloQueryOptions): Promise‹object›

Inherited from GraphNodeObserver.sendQuery

Defined in graphnode.ts:322

Parameters:

Name	Type	Default
query	any	-
apolloQueryOptions	IApolloQueryOptions	{}

Returns: Promise‹object›

---

sendTransaction

▸ sendTransaction<T>(transaction: any, mapToObject: function, errorHandler?: undefined | function): Operation‹T›

Defined in arc.ts:413

send an Ethereum transaction

Type parameters:

▪ T

Parameters:

▪ transaction: any

▪ mapToObject: function

▸ (receipt: web3receipt): T

Parameters:

Name	Type
receipt	web3receipt

▪Optional errorHandler: undefined | function

Returns: Operation‹T›

An observable of

---

setAccount

▸ setAccount(address: Address): void

Defined in arc.ts:388

Parameters:

Name	Type
address	Address

Returns: void

---

setContractInfos

▸ setContractInfos(contractInfos: IContractInfo[]): Promise‹void›

Defined in arc.ts:102

set the contract addresses

Parameters:

Name	Type	Description
contractInfos	IContractInfo[]	a list of IContractInfo objects

Returns: Promise‹void›

---

tags

▸ tags(options: ITagQueryOptions, apolloQueryOptions: IApolloQueryOptions): Observable‹Tag[]›

Defined in arc.ts:148

Parameters:

Name	Type	Default
options	ITagQueryOptions	{}
apolloQueryOptions	IApolloQueryOptions	{}

Returns: Observable‹Tag[]›