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91 lines
3.3 KiB
Markdown
91 lines
3.3 KiB
Markdown
# monero-lws ZeroMQ Usage
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Monero-lws uses ZeroMQ-RPC to retrieve information from a Monero daemon,
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ZeroMQ-SUB to get immediate notifications of blocks and transactions from a
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Monero daemon, and ZeroMQ-PUB to notify external applications of payment_id
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(web)hooks.
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## External "pub" socket
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The bind location of the ZMQ-PUB socket is specified with the `--zmq-pub`
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option. Users are still required to "subscribe" to topics:
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* `json-full-hooks`: A JSON array of webhook events that have recently
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triggered (identical output as webhook).
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* `msgpack-full-hooks`: A msgpack array of webhook events that have recently
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triggered (identical output as webhook).
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### `json-full-hooks`/`msgpack-full-hooks`i
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These topics receive PUB messages when a webhook ([`webhook_add`](administration.md)),
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event is triggered. If the specified URL is `zmq`, then notifications are only
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done over the ZMQ-PUB socket, otherwise the notification is sent over ZMQ-PUB
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socket AND the specified URL. Invoking `webhook_add` with a `payment_id` of
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zeroes (the field is optional in `webhook_add), will match on all transactions
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that lack a payment_id`.
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Example of the "raw" output from ZMQ-SUB side:
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```json
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json-full-hooks:{
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"index": 2,
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"events": [
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{
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"event": "tx-confirmation",
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"payment_id": "4f695d197f2a3c54",
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"token": "single zmq wallet",
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"confirmations": 1,
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"event_id": "3894f98f5dd54af5857e4f8a961a4e57",
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"tx_info": {
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"id": {
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"high": 0,
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"low": 5666767
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},
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"block": 2265961,
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"index": 0,
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"amount": 100000000000,
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"timestamp": 1687301600,
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"tx_hash": "ef3187775584351cc5109de124b877bcc530fb3fdbf77895329dd447902cc566",
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"tx_prefix_hash": "064884b8a8f903edcfebab830707ed44b633438b47c95a83320f4438b1b28626",
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"tx_public": "54dce1a6eebafa2fdedcea5e373ef9de1c3d2737ae9f809e80958d1ba4590d74",
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"rct_mask": "68459964f89d69b7a4b1e0a1a8a384cbc9a76363c8a6e99058d41906908bd005",
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"payment_id": "4f695d197f2a3c54",
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"unlock_time": 0,
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"mixin_count": 15,
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"coinbase": false
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}
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},
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{
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"event": "tx-confirmation",
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"payment_id": "4f695d197f2a3c54",
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"token": "single zmq wallet",
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"confirmations": 1,
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"event_id": "3894f98f5dd54af5857e4f8a961a4e57",
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"tx_info": {
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"id": {
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"high": 0,
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"low": 5666768
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},
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"block": 2265961,
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"index": 1,
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"amount": 3117324236131,
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"timestamp": 1687301600,
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"tx_hash": "ef3187775584351cc5109de124b877bcc530fb3fdbf77895329dd447902cc566",
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"tx_prefix_hash": "064884b8a8f903edcfebab830707ed44b633438b47c95a83320f4438b1b28626",
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"tx_public": "54dce1a6eebafa2fdedcea5e373ef9de1c3d2737ae9f809e80958d1ba4590d74",
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"rct_mask": "4cdc4c4e340aacb4741ba20f9b0b859242ecdad2fcc251f71d81123a47db3400",
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"payment_id": "4f695d197f2a3c54",
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"unlock_time": 0,
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"mixin_count": 15,
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"coinbase": false
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}
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}
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]
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}
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```
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Notice the `json-full-hooks:` prefix - this is required for the ZMQ PUB/SUB
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subscription model. The subscriber requests data from a certain "topic" where
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matching is done by string prefixes.
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> `index` is a counter used to detect dropped messages.
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> The `block` and `id` fields in the above example are NOT present when
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`confirmations == 0`.
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