AUTOMATED TESTS FOR STREAMING CHART SERVICE
Descrição da oferta de emprego
This service does the following.
1.
Reads price tick data from data stream 2.
Aggregates this data into OHLC Candlesticks 3.
Broadcasts the current bar to the streaming server API 4.
Stores complete bars into the database Please use database contents to check if the same candle bar was recieved before a new one has started.
Note.
OHLC (Open High Low Close) Candlestick is a form of prices aggregated in time.
For example, timeframe is 1 minute (1m), so candlebar will be the following.
- Timestamp.
Start of the minute, for example T (note that seconds are zero) - Open.
price of the very first tick in the timeframe (minute) - High.
maximum price in the timeframe (minute) - Low.
minimum price in the timeframe (minute) - Close.
price of the last tick in the timeframe (minute) This structure allows to store price history of any number of ticks as 1 integer for the timestamp and 4 floating point numbers for the price.
API Spec.
```grpc syntax = "proto3"; package [login to view URL]; service ChartService { rpc Subscribe(SubscribeRequest) returns (stream SubsribeResponse); } enum Timeframe { TIMEFRAME_UNKNOWN = 0; TIMEFRAME_MINUTE_1 = 1; } message SubscribeRequest { Timeframe timeframe = 1; repeated string symbol_list = 2; } message Candlestick { uint64 timestamp_msec = 1; double open = 2; double high = 3; double low = 4; double close = 5; } message SubsribeResponse { string symbol = 1; Candlestick bar = 2; } ``` Database DDL.
```sql CREATE TABLE `candlesticks_m1` (`symbol` VARCHAR(32) NOT NULL, `timestamp_msec` BIGINT(20) unsigned NOT NULL, `open` DECIMAL(24,6) NOT NULL, `high` DECIMAL(24,6) NOT NULL, `low` DECIMAL(24,6) NOT NULL, `close` DECIMAL(24,6) NOT NULL, PRIMARY KEY (`symbol`,`timestamp`)); ``` Automação de Testes Python Testes / Garantia de qualidade ID do Projeto.
# Sobre o projeto 11 propostas Aberto para ofertas Projeto remoto Ativo em 7 minutos atrás
Detalhes da oferta
- Indeterminado
- Em todo Portugal
- Indeterminado - Indeterminado
- 16/12/2024
- 16/03/2025
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