mirror of https://github.com/waku-org/nwaku.git
53 lines
1.6 KiB
Nim
53 lines
1.6 KiB
Nim
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when (NimMajor, NimMinor) < (1, 4):
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{.push raises: [Defect].}
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else:
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{.push raises: [].}
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import
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stew/byteutils
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import
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# Waku v1 imports
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../../waku/v1/protocol/waku_protocol,
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# Waku v2 imports
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libp2p/crypto/crypto,
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../../waku/v2/utils/namespacing,
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../../waku/v2/protocol/waku_message,
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../../waku/v2/node/peer_manager
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const
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ContentTopicApplication = "waku"
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ContentTopicAppVersion = "1"
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proc toV1Topic*(contentTopic: ContentTopic): waku_protocol.Topic {.raises: [LPError, ValueError]} =
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## Extracts the 4-byte array v1 topic from a content topic
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## with format `/waku/1/<v1-topic-bytes-as-hex>/rfc26`
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hexToByteArray(hexStr = NamespacedTopic.fromString(contentTopic).tryGet().topicName, N = 4) # Byte array length
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proc toV2ContentTopic*(v1Topic: waku_protocol.Topic): ContentTopic =
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## Convert a 4-byte array v1 topic to a namespaced content topic
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## with format `/waku/1/<v1-topic-bytes-as-hex>/rfc26`
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##
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## <v1-topic-bytes-as-hex> should be prefixed with `0x`
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var namespacedTopic = NamespacedTopic()
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namespacedTopic.application = ContentTopicApplication
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namespacedTopic.version = ContentTopicAppVersion
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namespacedTopic.topicName = "0x" & v1Topic.toHex()
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namespacedTopic.encoding = "rfc26"
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return ContentTopic($namespacedTopic)
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proc isBridgeable*(msg: WakuMessage): bool =
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## Determines if a Waku v2 msg is on a bridgeable content topic
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let ns = NamespacedTopic.fromString(msg.contentTopic)
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if ns.isOk():
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if ns.get().application == ContentTopicApplication and ns.get().version == ContentTopicAppVersion:
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return true
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return false
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