From dfbf10c94bfbbdbca353531c5cae6707e05981f0 Mon Sep 17 00:00:00 2001 From: Brandon Millman Date: Tue, 6 Nov 2018 20:25:30 -0800 Subject: feat(instant): fallback to an empty wallet provider when none is injected --- packages/instant/src/util/asset_buyer_factory.ts | 17 ++++++++++++ packages/instant/src/util/injected_provider.ts | 16 ----------- packages/instant/src/util/provider_factory.ts | 34 ++++++++++++++++++++++++ 3 files changed, 51 insertions(+), 16 deletions(-) create mode 100644 packages/instant/src/util/asset_buyer_factory.ts delete mode 100644 packages/instant/src/util/injected_provider.ts create mode 100644 packages/instant/src/util/provider_factory.ts (limited to 'packages/instant/src/util') diff --git a/packages/instant/src/util/asset_buyer_factory.ts b/packages/instant/src/util/asset_buyer_factory.ts new file mode 100644 index 000000000..5ba46223c --- /dev/null +++ b/packages/instant/src/util/asset_buyer_factory.ts @@ -0,0 +1,17 @@ +import { AssetBuyer, AssetBuyerOpts } from '@0x/asset-buyer'; +import { Provider } from 'ethereum-types'; +import * as _ from 'lodash'; + +import { Network, OrderSource } from '../types'; + +export const assetBuyerFactory = { + getAssetBuyer: (provider: Provider, orderSource: OrderSource, network: Network): AssetBuyer => { + const assetBuyerOptions: Partial = { + networkId: network, + }; + const assetBuyer = _.isString(orderSource) + ? AssetBuyer.getAssetBuyerForStandardRelayerAPIUrl(provider, orderSource, assetBuyerOptions) + : AssetBuyer.getAssetBuyerForProvidedOrders(provider, orderSource, assetBuyerOptions); + return assetBuyer; + }, +}; diff --git a/packages/instant/src/util/injected_provider.ts b/packages/instant/src/util/injected_provider.ts deleted file mode 100644 index 40f9e2da5..000000000 --- a/packages/instant/src/util/injected_provider.ts +++ /dev/null @@ -1,16 +0,0 @@ -import { Provider } from 'ethereum-types'; -import * as _ from 'lodash'; - -export const getInjectedProvider = (): Provider => { - const injectedProviderIfExists = (window as any).ethereum; - if (!_.isUndefined(injectedProviderIfExists)) { - // TODO: call enable here when implementing wallet connection flow - return injectedProviderIfExists; - } - const injectedWeb3IfExists = (window as any).web3; - if (!_.isUndefined(injectedWeb3IfExists.currentProvider)) { - return injectedWeb3IfExists.currentProvider; - } else { - throw new Error(`No injected web3 found`); - } -}; diff --git a/packages/instant/src/util/provider_factory.ts b/packages/instant/src/util/provider_factory.ts new file mode 100644 index 000000000..603f7674d --- /dev/null +++ b/packages/instant/src/util/provider_factory.ts @@ -0,0 +1,34 @@ +import { EmptyWalletSubprovider, RPCSubprovider, Web3ProviderEngine } from '@0x/subproviders'; +import { Provider } from 'ethereum-types'; +import * as _ from 'lodash'; + +import { BLOCK_POLLING_INTERVAL_MS, ETHEREUM_NODE_URL_BY_NETWORK } from '../constants'; +import { Maybe, Network } from '../types'; + +export const providerFactory = { + getInjectedProviderIfExists: (): Maybe => { + const injectedProviderIfExists = (window as any).ethereum; + if (!_.isUndefined(injectedProviderIfExists)) { + return injectedProviderIfExists; + } + const injectedWeb3IfExists = (window as any).web3; + if (!_.isUndefined(injectedWeb3IfExists) && !_.isUndefined(injectedWeb3IfExists.currentProvider)) { + return injectedWeb3IfExists.currentProvider; + } + return undefined; + }, + getFallbackNoSigningProvider: (network: Network): Provider => { + const providerEngine = new Web3ProviderEngine({ + pollingInterval: BLOCK_POLLING_INTERVAL_MS, + }); + // Intercept calls to `eth_accounts` and always return empty + providerEngine.addProvider(new EmptyWalletSubprovider()); + // Construct an RPC subprovider, all data based requests will be sent via the RPCSubprovider + // TODO(bmillman): make this more resilient to infura failures + const rpcUrl = ETHEREUM_NODE_URL_BY_NETWORK[network]; + providerEngine.addProvider(new RPCSubprovider(rpcUrl)); + // // Start the Provider Engine + providerEngine.start(); + return providerEngine; + }, +}; -- cgit v1.2.3 From 28df5bfd94e817cb90689059d7255495ca6522ad Mon Sep 17 00:00:00 2001 From: Brandon Millman Date: Tue, 6 Nov 2018 22:33:58 -0800 Subject: feat(instant): add Account to the ProviderState --- .../instant/src/util/provider_state_factory.ts | 69 ++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 packages/instant/src/util/provider_state_factory.ts (limited to 'packages/instant/src/util') diff --git a/packages/instant/src/util/provider_state_factory.ts b/packages/instant/src/util/provider_state_factory.ts new file mode 100644 index 000000000..18b188d89 --- /dev/null +++ b/packages/instant/src/util/provider_state_factory.ts @@ -0,0 +1,69 @@ +import { Web3Wrapper } from '@0x/web3-wrapper'; +import { Provider } from 'ethereum-types'; +import * as _ from 'lodash'; + +import { AccountNotReady, AccountState, Maybe, Network, OrderSource, ProviderState } from '../types'; + +import { assetBuyerFactory } from './asset_buyer_factory'; +import { providerFactory } from './provider_factory'; + +const LOADING_ACCOUNT: AccountNotReady = { + state: AccountState.Loading, +}; +const NO_ACCOUNT: AccountNotReady = { + state: AccountState.None, +}; + +export const providerStateFactory = { + getInitialProviderState: (orderSource: OrderSource, network: Network, provider?: Provider): ProviderState => { + if (!_.isUndefined(provider)) { + return providerStateFactory.getInitialProviderStateFromProvider(orderSource, network, provider); + } + const providerStateFromWindowIfExits = providerStateFactory.getInitialProviderStateFromWindowIfExists( + orderSource, + network, + ); + if (providerStateFromWindowIfExits) { + return providerStateFromWindowIfExits; + } else { + return providerStateFactory.getInitialProviderStateFallback(orderSource, network); + } + }, + getInitialProviderStateFromProvider: ( + orderSource: OrderSource, + network: Network, + provider: Provider, + ): ProviderState => { + const providerState: ProviderState = { + provider, + web3Wrapper: new Web3Wrapper(provider), + assetBuyer: assetBuyerFactory.getAssetBuyer(provider, orderSource, network), + account: LOADING_ACCOUNT, + }; + return providerState; + }, + getInitialProviderStateFromWindowIfExists: (orderSource: OrderSource, network: Network): Maybe => { + const injectedProviderIfExists = providerFactory.getInjectedProviderIfExists(); + if (!_.isUndefined(injectedProviderIfExists)) { + const providerState: ProviderState = { + provider: injectedProviderIfExists, + web3Wrapper: new Web3Wrapper(injectedProviderIfExists), + assetBuyer: assetBuyerFactory.getAssetBuyer(injectedProviderIfExists, orderSource, network), + account: LOADING_ACCOUNT, + }; + return providerState; + } else { + return undefined; + } + }, + getInitialProviderStateFallback: (orderSource: OrderSource, network: Network): ProviderState => { + const provider = providerFactory.getFallbackNoSigningProvider(network); + const providerState: ProviderState = { + provider, + web3Wrapper: new Web3Wrapper(provider), + assetBuyer: assetBuyerFactory.getAssetBuyer(provider, orderSource, network), + account: NO_ACCOUNT, + }; + return providerState; + }, +}; -- cgit v1.2.3