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feat(connector-fabric): identity json signing credentials hyperledger…
…-cacti#1130 Introduces a new, optional (for now) parameter on the run tx endpoint's request object called gatewayOptions which is capable of including everything that one needs to instantiate a gateway object of the underlying Fabric Node SDK. This change makes it possible to not need the keychain plugin at all when someone does not need/want it. Fixes hyperledger-cacti#1130 Depends on hyperledger-cacti#1124 Signed-off-by: Peter Somogyvari <[email protected]>
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packages/cactus-plugin-ledger-connector-fabric/src/main/typescript/common/create-gateway.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| import { DefaultEventHandlerOptions } from "fabric-network"; | ||
| import { DefaultEventHandlerStrategies, Wallets } from "fabric-network"; | ||
| import { Gateway } from "fabric-network"; | ||
| import { GatewayOptions as FabricGatewayOptions } from "fabric-network"; | ||
| import { Checks, LoggerProvider } from "@hyperledger/cactus-common"; | ||
| import { LogLevelDesc } from "@hyperledger/cactus-common"; | ||
| import { PluginRegistry } from "@hyperledger/cactus-core"; | ||
| import { ConnectionProfile } from "../generated/openapi/typescript-axios/index"; | ||
| import { GatewayDiscoveryOptions } from "../generated/openapi/typescript-axios/index"; | ||
| import { GatewayEventHandlerOptions } from "../generated/openapi/typescript-axios/index"; | ||
| import { GatewayOptions } from "../generated/openapi/typescript-axios/index"; | ||
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| export interface ICreateGatewayContext { | ||
| readonly logLevel?: LogLevelDesc; | ||
| readonly pluginRegistry: PluginRegistry; | ||
| readonly defaultConnectionProfile: ConnectionProfile; | ||
| readonly defaultDiscoveryOptions: GatewayDiscoveryOptions; | ||
| readonly defaultEventHandlerOptions: GatewayEventHandlerOptions; | ||
| readonly gatewayOptions: GatewayOptions; | ||
| } | ||
|
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| export const E_CREATE_GATEWAY_WALLET = | ||
| "Invalid opts.gatewayOptions.wallet. Need json or keychain, none provided."; | ||
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| export async function createGateway( | ||
| ctx: ICreateGatewayContext, | ||
| ): Promise<Gateway> { | ||
| const log = LoggerProvider.getOrCreate({ | ||
| label: "create-gateway", | ||
| level: ctx?.logLevel || "INFO", | ||
| }); | ||
| log.debug("Creating Fabric Node SDK Gateway object..."); | ||
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| Checks.truthy(ctx, "createGateway#ctx"); | ||
| Checks.truthy(ctx.gatewayOptions, "createGateway#ctx.gatewayOptions"); | ||
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| const { defaultConnectionProfile } = ctx; | ||
| const cp = ctx.gatewayOptions.connectionProfile || defaultConnectionProfile; | ||
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| const wallet = await Wallets.newInMemoryWallet(); | ||
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| let identity; | ||
| if (ctx.gatewayOptions.wallet.json) { | ||
| log.debug("Parsing wallet from JSON representation..."); | ||
| identity = JSON.parse(ctx.gatewayOptions.wallet.json); | ||
| } else if (ctx.gatewayOptions.wallet.keychain) { | ||
| log.debug("Fetching wallet from JSON keychain..."); | ||
| const keychain = ctx.pluginRegistry.findOneByKeychainId( | ||
| ctx.gatewayOptions.wallet.keychain.keychainId, | ||
| ); | ||
| identity = await keychain.get<string>( | ||
| ctx.gatewayOptions.wallet.keychain.keychainRef, | ||
| ); | ||
| } else { | ||
| throw new Error(E_CREATE_GATEWAY_WALLET); | ||
| } | ||
|
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| await wallet.put(ctx.gatewayOptions.identity, identity); | ||
| log.debug(`Imported identity ${ctx.gatewayOptions.identity} to wallet OK`); | ||
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| const eventHandlerOptions: DefaultEventHandlerOptions = { | ||
| commitTimeout: ctx.gatewayOptions.eventHandlerOptions?.commitTimeout || 300, | ||
| endorseTimeout: | ||
| ctx.gatewayOptions.eventHandlerOptions?.endorseTimeout || 300, | ||
| }; | ||
|
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| const strategy = | ||
| ctx.gatewayOptions.eventHandlerOptions?.strategy || | ||
| ctx.defaultEventHandlerOptions.strategy; | ||
|
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| if (strategy) { | ||
| eventHandlerOptions.strategy = DefaultEventHandlerStrategies[strategy]; | ||
| } | ||
|
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| log.debug(`Gateway EventHandlerOptions: `, eventHandlerOptions); | ||
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| const gatewayOptions: FabricGatewayOptions = { | ||
| discovery: ctx.gatewayOptions.discovery || ctx.defaultDiscoveryOptions, | ||
| eventHandlerOptions, | ||
| identity: ctx.gatewayOptions.identity, | ||
| wallet, | ||
| }; | ||
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| log.debug("Instantiating and connecting gateway..."); | ||
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| const gateway = new Gateway(); | ||
| await gateway.connect(cp, gatewayOptions); | ||
|
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| log.debug("Connection established by gateway OK"); | ||
|
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| return gateway; | ||
| } |
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