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32 lines
1.2 KiB
Markdown
32 lines
1.2 KiB
Markdown
# Query Service
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Query service is the interface between forntend and databases. It is written in **Golang**. It will have modules for all supported databases. Query service is responsible to:
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- parse the request from Frontend
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- create relevant Clickhouse queries (and all other supported database queries)
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- parse response from databases and handle error if any
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- clickhouse response in the format accepted by Frontend
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#### Configuration
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- Open ./constants/constants.go
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- Replace ```const RELATIONAL_DATASOURCE_PATH = "/var/lib/signoz/signoz.db"``` \
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with ```const RELATIONAL_DATASOURCE_PATH = "./signoz.db".```
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- Query Service needs below `env` variables to run:
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```
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ClickHouseUrl=tcp://localhost:9001
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STORAGE=clickhouse
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```
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<!-- The above values are the default ones used by SigNoz and are kept at `deploy/kubernetes/platform/signoz-charts/query-service/values.yaml` -->
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#### Build and Run locally
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```console
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cd pkg/query-service
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go build -o build/query-service main.go
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ClickHouseUrl=tcp://localhost:9001 STORAGE=clickhouse build/query-service
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```
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#### Docker Images
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The docker images of query-service is available at https://hub.docker.com/r/signoz/query-service |