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141 lines
2.3 KiB
Markdown
141 lines
2.3 KiB
Markdown
---
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layout: developer-doc
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title: Language Server HTTP Endpoints
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category: language-server
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tags: [language-server, protocol, specification]
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order: 6
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---
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# HTTP Endpoints
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Language server exposes a number of HTTP endpoints on the same socket as the
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JSONRPC protocol.
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<!-- MarkdownTOC levels="2" autolink="true" indent=" " -->
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- [`/_health`](#---health-)
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- [`/_health/readiness`](#---health-readiness-)
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- [`/_health/liveness`](#---health-liveness-)
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- [`/_idle`](#---idle-)
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<!-- /MarkdownTOC -->
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## `/_health`
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HTTP endpoint that provides basic health checking capabilities.
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### `GET | HEAD`
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Returns `200 OK` when the server is started and `500 Internal Server Error`
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otherwise.
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#### Request
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```text
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> GET /_health HTTP/1.1
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> Host: localhost:63597
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> User-Agent: curl/7.77.0
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> Accept: */*
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```
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#### Response
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```text
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< HTTP/1.1 200 OK
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< Server: akka-http/10.2.0-RC1
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< Date: Fri, 09 Jul 2021 15:16:16 GMT
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< Content-Type: text/plain; charset=UTF-8
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< Content-Length: 2
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<
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OK
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```
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## `/_health/readiness`
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The server readiness probe.
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### `GET | HEAD`
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Returns `200 OK` when the server is initialized and `500 Internal Server Error`
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otherwise.
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#### Request
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```text
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> GET /_health/readiness HTTP/1.1
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> Host: localhost:63597
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> User-Agent: curl/7.77.0
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> Accept: */*
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```
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#### Response
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```text
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< HTTP/1.1 200 OK
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< Server: akka-http/10.2.0-RC1
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< Date: Fri, 09 Jul 2021 15:30:53 GMT
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< Content-Type: text/plain; charset=UTF-8
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< Content-Length: 2
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<
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OK
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```
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## `/_health/liveness`
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The server liveness probe.
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### `GET | HEAD`
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Checks if all the server subsystems are functioning and returns `200 OK` or
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`500 Internal Server Error` otherwise.
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#### Request
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```text
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> GET /_health/liveness HTTP/1.1
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> Host: localhost:60339
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> User-Agent: curl/7.77.0
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> Accept: */*
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```
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#### Response
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```text
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< HTTP/1.1 200 OK
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< Server: akka-http/10.2.0-RC1
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< Date: Fri, 09 Jul 2021 15:35:43 GMT
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< Content-Type: text/plain; charset=UTF-8
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< Content-Length: 2
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<
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OK
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```
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## `/_idle`
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The server idleness probe.
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### `GET`
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Return the amount of time the language server is idle.
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#### Request
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```text
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> GET /_idle HTTP/1.1
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> Host: localhost:60339
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> User-Agent: curl/7.77.0
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> Accept: */*
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```
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#### Response
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```text
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< HTTP/1.1 200 OK
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< Server: akka-http/10.2.0-RC1
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< Date: Fri, 09 Jul 2021 15:44:51 GMT
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< Content-Type: application/json
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< Content-Length: 21
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<
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{"idle_time_sec":58}
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```
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