74 lines
2.6 KiB
Nim
74 lines
2.6 KiB
Nim
# Copyright (c) 2018-2020 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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stew/results,
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chronicles,
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presto,
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./rest_utils,
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../beacon_node_common
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logScope: topics = "rest_eventapi"
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proc validateEventTopics(events: seq[EventTopic]): Result[EventTopics,
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cstring] =
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const NonUniqueError = cstring("Event topics must be unique")
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var res: set[EventTopic]
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for item in events:
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case item
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of EventTopic.Head:
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if EventTopic.Head in res:
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return err(NonUniqueError)
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res.incl(EventTopic.Head)
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of EventTopic.Block:
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if EventTopic.Block in res:
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return err(NonUniqueError)
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res.incl(EventTopic.Block)
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of EventTopic.Attestation:
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if EventTopic.Attestation in res:
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return err(NonUniqueError)
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res.incl(EventTopic.Attestation)
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of EventTopic.VoluntaryExit:
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if EventTopic.VoluntaryExit in res:
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return err(NonUniqueError)
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res.incl(EventTopic.VoluntaryExit)
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of EventTopic.FinalizedCheckpoint:
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if EventTopic.FinalizedCheckpoint in res:
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return err(NonUniqueError)
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res.incl(EventTopic.FinalizedCheckpoint)
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of EventTopic.ChainReorg:
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if EventTopic.ChainReorg in res:
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return err(NonUniqueError)
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res.incl(EventTopic.ChainReorg)
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if res == {}:
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err("Empty topics list")
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else:
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ok(res)
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proc installEventApiHandlers*(router: var RestRouter, node: BeaconNode) =
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router.api(MethodGet, "/api/eth/v1/events") do (
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topics: seq[EventTopic]) -> RestApiResponse:
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# TODO (cheatfate): This call is not fully implemented yet, because there
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# missing infrastructure to raise/catch global events (eventbus).
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let eventTopics =
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block:
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if topics.isErr():
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return RestApiResponse.jsonError(Http400, "Invalid topics value",
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$topics.error())
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let res = validateEventTopics(topics.get())
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if res.isErr():
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return RestApiResponse.jsonError(Http400, "Invalid topics value",
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$res.error())
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res.get()
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return RestApiResponse.jsonError(Http500, "Not implemented yet")
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router.redirect(
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MethodGet,
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"/eth/v1/events",
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"/api/eth/v1/events"
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)
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