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Merge pull request #103 from Lercerss/riya/messagelist/54
Message List #54
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,201 @@ | ||
| /* eslint-disable camelcase */ | ||
| import React, { Component } from 'react'; | ||
| import { withStyles } from '@material-ui/core/styles'; | ||
| import { Box } from '@material-ui/core'; | ||
| import classNames from 'classnames'; | ||
| import OrderBookService from '../services/OrderBookService'; | ||
| import { | ||
| SNAPSHOT_INSTRUMENT, | ||
| MESSAGE_LIST_DEFAULT_PAGE_SIZE, | ||
| } from '../constants/Constants'; | ||
| import MultiDirectionalScroll from './MultiDirectionalScroll'; | ||
| import { Styles } from '../styles/MessageList'; | ||
| import { roundNumber } from '../utils/number-utils'; | ||
| import { getMessageDirection } from '../utils/order-book-utils'; | ||
| import { MESSAGE_TYPE_ENUM } from '../constants/Enums'; | ||
| import { nanosecondsToString, splitNanosecondEpochTimestamp, epochToDateString } from '../utils/date-utils'; | ||
|
|
||
| class MessageList extends Component { | ||
| constructor(props) { | ||
| super(props); | ||
|
|
||
| this.state = { | ||
| messages: [], | ||
| lastSodOffsetTop: BigInt(0), | ||
| lastSodOffsetBottom: BigInt(0), | ||
| }; | ||
| } | ||
|
|
||
| componentDidMount() { | ||
| this.fetchInitialMessages(); | ||
| } | ||
|
|
||
| componentDidUpdate(prevProps, prevState, snapshot) { | ||
| const { lastSodOffset } = this.props; | ||
| const { messages } = this.state; | ||
|
|
||
| if (typeof prevProps.lastSodOffset !== 'bigint' || (typeof lastSodOffset === 'bigint' | ||
| && typeof prevProps.lastSodOffset === 'bigint' | ||
| && lastSodOffset.toString() !== prevProps.lastSodOffset.toString())) { | ||
| const messageIndex = this.getPotentialIndexOfLastSodOffsetFromProps(); | ||
| if (messageIndex !== -1) { | ||
| const messagesLength = messages.length; | ||
| const halfway = messagesLength / 2; | ||
| const directionOfPotentialPaging = (messageIndex > halfway) ? 'bottom' : 'top'; | ||
| const diffFromEdge = directionOfPotentialPaging === 'bottom' | ||
| ? messagesLength - messageIndex : messageIndex; | ||
|
|
||
| if (diffFromEdge < 5) { | ||
| this.handleHitEdge(directionOfPotentialPaging); | ||
| } | ||
| } else { | ||
| this.fetchInitialMessages(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @desc Helper that checks for existence of a message in the array of messages (from state) | ||
| * that equals the latest lastSodOffset passed in props. | ||
| * @returns {Number} returns -1 if not found | ||
| */ | ||
| getPotentialIndexOfLastSodOffsetFromProps = () => { | ||
| const { messages } = this.state; | ||
| const { lastSodOffset } = this.props; | ||
|
|
||
| if (!messages) return -1; | ||
|
|
||
| return messages | ||
| .map(message => message.sod_offset) | ||
| .findIndex(sodOffset => sodOffset === lastSodOffset.toString()); | ||
| }; | ||
|
|
||
| /** | ||
| * @desc function called to load initial message list; when there is no messages or the sodOffset is | ||
| * significantly different from the current one | ||
| */ | ||
| fetchInitialMessages = async () => { | ||
| const { lastSodOffset } = this.props; | ||
| const nMessages = MESSAGE_LIST_DEFAULT_PAGE_SIZE * 2 + 1; | ||
| const lowerSodOffset = lastSodOffset - BigInt(MESSAGE_LIST_DEFAULT_PAGE_SIZE - 1); | ||
|
|
||
| try { | ||
| const reverseMessagesResponse = await OrderBookService.getMessageList( | ||
| SNAPSHOT_INSTRUMENT, | ||
| lowerSodOffset.toString(), | ||
| nMessages, | ||
| ); | ||
|
|
||
| const { messages, pageInfo } = reverseMessagesResponse.data; | ||
|
|
||
| this.setState({ | ||
| messages, | ||
| lastSodOffsetTop: lowerSodOffset, | ||
| lastSodOffsetBottom: BigInt(pageInfo.sod_offset), | ||
| }); | ||
| } catch (e) { | ||
| console.log(e); | ||
| } | ||
| }; | ||
|
|
||
| /** | ||
| * @desc Paging handler for upwards and downwards hitting of the multidirectional scroll | ||
| * @param direction | ||
| */ | ||
| handleHitEdge(direction) { | ||
| const { lastSodOffsetTop, lastSodOffsetBottom } = this.state; | ||
| // eslint-disable-next-line react/destructuring-assignment | ||
| const existingMessages = this.state.messages; | ||
|
|
||
| if (direction === 'top') { | ||
| const nMessages = -MESSAGE_LIST_DEFAULT_PAGE_SIZE; | ||
| OrderBookService.getMessageList(SNAPSHOT_INSTRUMENT, lastSodOffsetTop.toString(), nMessages) | ||
| .then(response => { | ||
| const { pageInfo, messages } = response.data; | ||
| this.setState({ | ||
| messages: messages ? messages.concat(existingMessages) : existingMessages, | ||
| lastSodOffsetTop: BigInt(pageInfo.sod_offset), | ||
| }); | ||
| }) | ||
| .catch(err => { | ||
| console.log(err); | ||
| }); | ||
| } else if (direction === 'bottom') { | ||
| OrderBookService.getMessageList(SNAPSHOT_INSTRUMENT, lastSodOffsetBottom.toString()) | ||
| .then(response => { | ||
| const { pageInfo, messages } = response.data; | ||
| this.setState({ | ||
| messages: messages ? existingMessages.concat(messages) : existingMessages, | ||
| lastSodOffsetBottom: BigInt(pageInfo.sod_offset), | ||
| }); | ||
| }) | ||
| .catch(err => { | ||
| console.log(err); | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @desc Renders every row of the message list table. every row corresponds to a message | ||
| * @returns {*} | ||
| */ | ||
| renderTableData() { | ||
| const { classes, lastSodOffset } = this.props; | ||
| const { messages } = this.state; | ||
| return messages.map(message => { | ||
| const { | ||
| timestamp, message_type, order_id, share_qty, price, direction, sod_offset, | ||
| } = message; | ||
|
|
||
| const { timeNanoseconds, dateNanoseconds } = splitNanosecondEpochTimestamp(timestamp); | ||
| const date = epochToDateString(dateNanoseconds); | ||
| const time = nanosecondsToString(timeNanoseconds); | ||
|
|
||
| return ( | ||
| <Box | ||
| key={`${sod_offset} ${timestamp}`} | ||
| className={lastSodOffset.toString() === sod_offset | ||
| ? classes.currentMessageRow | ||
| : classes.tableDataRow} | ||
| > | ||
| <Box className={classNames(classes.tableColumn, classes.overrideTimestampColumn)}> | ||
| {`${date} ${time}`} | ||
| </Box> | ||
| <Box className={classes.tableColumn}>{MESSAGE_TYPE_ENUM[message_type].name}</Box> | ||
| <Box className={classes.tableColumn}>{order_id}</Box> | ||
| <Box className={classes.tableColumn}>{share_qty}</Box> | ||
| <Box className={classes.tableColumn}>{roundNumber(price, 2)}</Box> | ||
| <Box className={classes.tableColumn}>{getMessageDirection(direction)}</Box> | ||
| </Box> | ||
| ); | ||
| }); | ||
| } | ||
|
|
||
| render() { | ||
| const { classes } = this.props; | ||
|
|
||
| return ( | ||
| <div className={classes.scrollContainer}> | ||
| <Box className={classes.tableHeaderRow}> | ||
| <Box className={classNames(classes.tableColumn, classes.overrideTimestampColumn)}> | ||
| <div>{'Timestamp'}</div> | ||
| </Box> | ||
| <Box className={classes.tableColumn}><div>{'Type'}</div></Box> | ||
| <Box className={classes.tableColumn}><div>{'OrderID'}</div></Box> | ||
| <Box className={classes.tableColumn}><div>{'Quantity'}</div></Box> | ||
| <Box className={classes.tableColumn}><div>{'Price'}</div></Box> | ||
| <Box className={classes.tableColumn}><div>{'Direction'}</div></Box> | ||
| </Box> | ||
| <MultiDirectionalScroll | ||
| onReachBottom={() => this.handleHitEdge('bottom')} | ||
| onReachTop={() => this.handleHitEdge('top')} | ||
| position={50} | ||
| > | ||
| {this.renderTableData()} | ||
| </MultiDirectionalScroll> | ||
| </div> | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| export default withStyles(Styles)(MessageList); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| export const MESSAGE_TYPE_ENUM = { | ||
| 1: { | ||
| name: 'New order', | ||
| }, | ||
| 2: { | ||
| name: 'Modify', | ||
| }, | ||
| 3: { | ||
| name: 'Delete', | ||
| }, | ||
| 4: { | ||
| name: 'Execute', | ||
| }, | ||
| 5: { | ||
| name: 'Ignore', | ||
| }, | ||
| }; |
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