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71 lines
2.2 KiB
Markdown
71 lines
2.2 KiB
Markdown
# The sqld HTTP API v1 specification ("Hrana over HTTP")
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Version 1 of the HTTP API ("Hrana over HTTP") is designed to complement the
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WebSocket-based Hrana protocol for use cases that don't require stateful
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database connections and for which the additional network rountrip required by
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WebSockets relative to HTTP is not necessary.
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This API aims to be of production quality and it is primarily intended to be
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consumed by client libraries. It does not deprecate or replace the "version 0"
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of the HTTP API, which is designed to be quick and easy for users who send HTTP
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requests manually (for example using `curl` or by directly using an HTTP
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library).
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## Overview
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This HTTP API uses data structures and semantics from the Hrana protocol;
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versions of the HTTP API are intended to correspond to versions of the Hrana
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protocol, so HTTP API v1 corresponds to the `hrana1` version of Hrana.
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Endpoints in the HTTP API correspond to requests in Hrana. Each request is
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executed as if a fresh Hrana stream was opened for the request.
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All request and response bodies are encoded in JSON, with content type
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`application/json`.
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## Execute a statement
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```
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POST /v1/execute
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-> {
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"stmt": Stmt,
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}
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<- {
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"result": StmtResult,
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}
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```
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The `execute` endpoint receives a statement and returns the result of executing
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the statement. The `Stmt` and `StmtResult` structures are from the Hrana
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protocol. The semantics of this endpoint is the same as the `execute` request in
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Hrana.
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## Execute a batch
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```
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POST /v1/batch
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-> {
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"batch": Batch,
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}
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<- {
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"result": BatchResult,
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}
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```
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The `batch` endpoint receives a batch and returns the result of executing the
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statement. The `Batch` and `BatchResult` structures are from the Hrana protocol.
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The semantics of this endpoint is the same as the `batch` request in Hrana.
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## Errors
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Successful responses are indicated by a HTTP status code in range [200, 300).
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Errors are indicated with HTTP status codes in range [400, 600), and the error
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responses should have the format of `Error` from the Hrana protocol. However,
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the clients should be able to handle error responses that don't correspond to
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this format; in particular, the server may produce some error responses with the
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error message as plain text.
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