common_meta/ddl/create_flow/
metadata.rs

1// Copyright 2023 Greptime Team
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 snafu::OptionExt;
16
17use crate::ddl::create_flow::CreateFlowProcedure;
18use crate::error::{self, Result};
19use crate::key::table_name::TableNameKey;
20
21impl CreateFlowProcedure {
22    /// Allocates the [FlowId].
23    pub(crate) async fn allocate_flow_id(&mut self) -> Result<()> {
24        //TODO(weny, ruihang): We doesn't support the partitions. It's always be 1, now.
25        let partitions = 1;
26        let (flow_id, peers) = self
27            .context
28            .flow_metadata_allocator
29            .create(partitions)
30            .await?;
31        self.data.flow_id = Some(flow_id);
32        self.data.peers = peers;
33
34        Ok(())
35    }
36
37    /// Ensures all source tables exist and collects source table ids
38    pub(crate) async fn collect_source_tables(&mut self) -> Result<()> {
39        // Ensures all source tables exist.
40        let keys = self
41            .data
42            .task
43            .source_table_names
44            .iter()
45            .map(|name| TableNameKey::new(&name.catalog_name, &name.schema_name, &name.table_name))
46            .collect::<Vec<_>>();
47
48        let source_table_ids = self
49            .context
50            .table_metadata_manager
51            .table_name_manager()
52            .batch_get(keys)
53            .await?;
54
55        let source_table_ids = self
56            .data
57            .task
58            .source_table_names
59            .iter()
60            .zip(source_table_ids)
61            .map(|(name, table_id)| {
62                Ok(table_id
63                    .with_context(|| error::TableNotFoundSnafu {
64                        table_name: name.to_string(),
65                    })?
66                    .table_id())
67            })
68            .collect::<Result<Vec<_>>>()?;
69
70        self.data.source_table_ids = source_table_ids;
71        Ok(())
72    }
73}
common_meta/ddl/create_flow/metadata.rs

common_meta/ddl/create_flow/
metadata.rs
