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authorFabio Berger <me@fabioberger.com>2018-09-25 18:20:09 +0800
committerFabio Berger <me@fabioberger.com>2018-09-25 18:20:09 +0800
commit0afe55f2ff028d03e3a9f110819806f68446dee9 (patch)
tree54b009844ed69b0f4679e876b0cc0f83e332dc1a /packages/order-watcher
parent21910a712965e5f992f540d94620be2b45384d8f (diff)
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Refactor blockstream integration to use the proper callback method interface
Diffstat (limited to 'packages/order-watcher')
-rw-r--r--packages/order-watcher/src/order_watcher/event_watcher.ts40
1 files changed, 29 insertions, 11 deletions
diff --git a/packages/order-watcher/src/order_watcher/event_watcher.ts b/packages/order-watcher/src/order_watcher/event_watcher.ts
index eca235e26..c3de86f4e 100644
--- a/packages/order-watcher/src/order_watcher/event_watcher.ts
+++ b/packages/order-watcher/src/order_watcher/event_watcher.ts
@@ -62,8 +62,8 @@ export class EventWatcher {
throw new Error(OrderWatcherError.SubscriptionAlreadyPresent);
}
this._blockAndLogStreamerIfExists = new BlockAndLogStreamer(
- this._getBlockOrNullAsync.bind(this),
- this._web3Wrapper.getLogsAsync.bind(this._web3Wrapper),
+ this._blockstreamGetBlockOrNullAsync.bind(this),
+ this._blockstreamGetLogsAsync.bind(this),
this._onBlockAndLogStreamerError.bind(this),
);
const catchAllLogFilter = {};
@@ -82,13 +82,31 @@ export class EventWatcher {
this._onLogStateChangedAsync.bind(this, callback, isRemoved),
);
}
+ /// This method only exists in order to comply with the expected interface of Blockstream's constructor
+ private async _blockstreamGetBlockOrNullAsync(hash: string): Promise<Block | null> {
+ const shouldIncludeTransactionData = false;
+ const blockOrNull = await this._web3Wrapper.sendRawPayloadAsync({
+ method: 'eth_getBlockByHash',
+ params: [hash, shouldIncludeTransactionData],
+ });
+ return blockOrNull as Block;
+ }
// This method only exists in order to comply with the expected interface of Blockstream's constructor
- private async _getBlockOrNullAsync(): Promise<BlockWithoutTransactionData | null> {
- const blockIfExists = await this._web3Wrapper.getBlockIfExistsAsync.bind(this._web3Wrapper);
- if (_.isUndefined(blockIfExists)) {
- return null;
- }
- return blockIfExists;
+ private async _blockstreamGetLatestBlockOrNullAsync(): Promise<Block | null> {
+ const shouldIncludeTransactionData = false;
+ const blockOrNull = await this._web3Wrapper.sendRawPayloadAsync({
+ method: 'eth_getBlockByNumber',
+ params: ['latest', shouldIncludeTransactionData],
+ });
+ return blockOrNull as Block;
+ }
+ // This method only exists in order to comply with the expected interface of Blockstream's constructor
+ private async _blockstreamGetLogsAsync(filterOptions: FilterObject): Promise<Log[]> {
+ const logs = await this._web3Wrapper.sendRawPayloadAsync({
+ method: 'eth_getLogs',
+ params: [filterOptions],
+ });
+ return logs as Log[];
}
private _stopBlockAndLogStream(): void {
if (_.isUndefined(this._blockAndLogStreamerIfExists)) {
@@ -108,14 +126,14 @@ export class EventWatcher {
await this._emitDifferencesAsync(log, isRemoved ? LogEventState.Removed : LogEventState.Added, callback);
}
private async _reconcileBlockAsync(): Promise<void> {
- const latestBlockIfExists = await this._web3Wrapper.getBlockIfExistsAsync(this._stateLayer);
- if (_.isUndefined(latestBlockIfExists)) {
+ const latestBlockOrNull = await this._blockstreamGetLatestBlockOrNullAsync();
+ if (_.isNull(latestBlockOrNull)) {
return; // noop
}
// We need to coerce to Block type cause Web3.Block includes types for mempool blocks
if (!_.isUndefined(this._blockAndLogStreamerIfExists)) {
// If we clear the interval while fetching the block - this._blockAndLogStreamer will be undefined
- await this._blockAndLogStreamerIfExists.reconcileNewBlock((latestBlockIfExists as any) as Block);
+ await this._blockAndLogStreamerIfExists.reconcileNewBlock((latestBlockOrNull as any) as Block);
}
}
private async _emitDifferencesAsync(