risingwave_connector/source/mqtt/
split.rs

1// Copyright 2025 RisingWave Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use risingwave_common::types::JsonbVal;
16use serde::{Deserialize, Serialize};
17
18use crate::error::ConnectorResult;
19use crate::source::{SplitId, SplitMetaData};
20
21/// The states of a NATS split, which will be persisted to checkpoint.
22#[derive(Clone, Serialize, Deserialize, Debug, PartialEq, Hash)]
23pub struct MqttSplit {
24    pub(crate) topic: String,
25}
26
27impl SplitMetaData for MqttSplit {
28    fn id(&self) -> SplitId {
29        // TODO: should avoid constructing a string every time
30        self.topic.clone().into()
31    }
32
33    fn restore_from_json(value: JsonbVal) -> ConnectorResult<Self> {
34        serde_json::from_value(value.take()).map_err(Into::into)
35    }
36
37    fn encode_to_json(&self) -> JsonbVal {
38        serde_json::to_value(self.clone()).unwrap().into()
39    }
40
41    fn update_offset(&mut self, _last_seen_offset: String) -> ConnectorResult<()> {
42        Ok(())
43    }
44}
45
46impl MqttSplit {
47    pub fn new(topic: String) -> Self {
48        Self { topic }
49    }
50}
risingwave_connector/source/mqtt/split.rs

risingwave_connector/source/mqtt/
split.rs
