Files
dbx/src-tauri/src/commands/transfer.rs
T

285 lines
11 KiB
Rust

use std::sync::Arc;
use tauri::{AppHandle, Emitter, State};
use crate::commands::connection::{ensure_connection_writable, AppState};
// Re-export types and functions used by other modules
pub use dbx_core::transfer::{get_db_type, TransferProgress, TransferRequest, TransferStatus};
fn emit_progress(app: &AppHandle, progress: TransferProgress) {
let _ = app.emit("transfer-progress", progress);
}
#[tauri::command]
pub async fn start_transfer(
app: AppHandle,
state: State<'_, Arc<AppState>>,
request: TransferRequest,
) -> Result<(), String> {
let state = state.inner().clone();
let transfer_id = request.transfer_id.clone();
// Reject transfer early if the target connection is read-only — writing to it is inherently required
ensure_connection_writable(&state, &request.target_connection_id, "Transfer").await?;
// Validate connections exist
let source_db_type = get_db_type(&state, &request.source_connection_id).await?;
let target_db_type = get_db_type(&state, &request.target_connection_id).await?;
dbx_core::transfer::validate_transfer_target_table_names(&request)?;
// Ensure pools
let source_pool_key =
state.get_or_create_pool(&request.source_connection_id, Some(&request.source_database)).await?;
let target_pool_key =
state.get_or_create_pool(&request.target_connection_id, Some(&request.target_database)).await?;
tokio::spawn(async move {
// Sort tables by FK dependency so referenced tables are transferred first.
let sorted_tables = dbx_core::transfer::sort_tables_by_fk_dependency(
&state,
&request.source_connection_id,
&request.source_database,
&request.source_schema,
&request.tables,
true,
)
.await
.unwrap_or_else(|e| {
log::warn!("[transfer] failed to sort tables by FK dependency, using original order: {e}");
request.tables.clone()
});
let total_tables = sorted_tables.len();
log::info!("[transfer] starting transfer_id={} tables={}", transfer_id, total_tables);
if matches!(source_db_type, dbx_core::models::connection::DatabaseType::Postgres)
&& matches!(target_db_type, dbx_core::models::connection::DatabaseType::Postgres)
{
match dbx_core::transfer::transfer_postgres_schema_dependencies(
&state,
&request,
&source_pool_key,
&target_pool_key,
|progress| emit_progress(&app, progress),
)
.await
{
Ok(()) => {}
Err(e) if e == "Cancelled" => {
emit_progress(
&app,
TransferProgress {
transfer_id: transfer_id.clone(),
table: "schema dependencies".to_string(),
table_index: 0,
total_tables,
rows_transferred: 0,
total_rows: None,
status: TransferStatus::Cancelled,
error: None,
},
);
dbx_core::transfer::clear_cancelled(&transfer_id).await;
return;
}
Err(e) => {
emit_progress(
&app,
TransferProgress {
transfer_id: transfer_id.clone(),
table: "schema dependencies".to_string(),
table_index: 0,
total_tables,
rows_transferred: 0,
total_rows: None,
status: TransferStatus::Error,
error: Some(e),
},
);
dbx_core::transfer::clear_cancelled(&transfer_id).await;
return;
}
}
}
for (i, table) in sorted_tables.iter().enumerate() {
if dbx_core::transfer::is_cancelled(&transfer_id).await {
emit_progress(
&app,
TransferProgress {
transfer_id: transfer_id.clone(),
table: table.clone(),
table_index: i,
total_tables,
rows_transferred: 0,
total_rows: None,
status: TransferStatus::Cancelled,
error: None,
},
);
dbx_core::transfer::clear_cancelled(&transfer_id).await;
return;
}
log::info!("[transfer] table {}/{}: {}", i + 1, total_tables, table);
let mut last_rows_transferred = 0_u64;
let mut last_total_rows = None;
match dbx_core::transfer::transfer_table(
&state,
&request,
table,
i,
&source_db_type,
&target_db_type,
&source_pool_key,
&target_pool_key,
|progress| {
last_rows_transferred = progress.rows_transferred;
last_total_rows = progress.total_rows;
emit_progress(&app, progress);
},
)
.await
{
Ok(rows) => {
emit_progress(
&app,
TransferProgress {
transfer_id: transfer_id.clone(),
table: table.clone(),
table_index: i,
total_tables,
rows_transferred: rows,
total_rows: last_total_rows.or(Some(rows)),
status: TransferStatus::TableDone,
error: None,
},
);
}
Err(e) => {
if e == "Cancelled" {
emit_progress(
&app,
TransferProgress {
transfer_id: transfer_id.clone(),
table: table.clone(),
table_index: i,
total_tables,
rows_transferred: 0,
total_rows: None,
status: TransferStatus::Cancelled,
error: None,
},
);
dbx_core::transfer::clear_cancelled(&transfer_id).await;
return;
}
emit_progress(
&app,
TransferProgress {
transfer_id: transfer_id.clone(),
table: table.clone(),
table_index: i,
total_tables,
rows_transferred: last_rows_transferred,
total_rows: last_total_rows,
status: TransferStatus::Error,
error: Some(e),
},
);
}
}
}
if matches!(source_db_type, dbx_core::models::connection::DatabaseType::Postgres)
&& matches!(target_db_type, dbx_core::models::connection::DatabaseType::Postgres)
{
match dbx_core::transfer::transfer_postgres_schema_objects(
&state,
&request,
&source_pool_key,
&target_pool_key,
|progress| emit_progress(&app, progress),
)
.await
{
Ok(()) => {}
Err(e) if e == "Cancelled" => {
emit_progress(
&app,
TransferProgress {
transfer_id: transfer_id.clone(),
table: "schema objects".to_string(),
table_index: total_tables,
total_tables,
rows_transferred: 0,
total_rows: None,
status: TransferStatus::Cancelled,
error: None,
},
);
dbx_core::transfer::clear_cancelled(&transfer_id).await;
return;
}
Err(e) => {
emit_progress(
&app,
TransferProgress {
transfer_id: transfer_id.clone(),
table: "schema objects".to_string(),
table_index: total_tables,
total_tables,
rows_transferred: 0,
total_rows: None,
status: TransferStatus::Error,
error: Some(e),
},
);
}
}
}
emit_progress(
&app,
TransferProgress {
transfer_id: transfer_id.clone(),
table: String::new(),
table_index: total_tables,
total_tables,
rows_transferred: 0,
total_rows: None,
status: TransferStatus::Done,
error: None,
},
);
dbx_core::transfer::clear_cancelled(&transfer_id).await;
});
Ok(())
}
#[tauri::command]
pub async fn cancel_transfer(transfer_id: String) -> Result<(), String> {
dbx_core::transfer::set_cancelled(&transfer_id).await;
Ok(())
}
/// Sort table names by foreign key dependency.
/// `parents_first: true` → parent tables first (insert/export order).
/// `parents_first: false` → child tables first (drop order).
#[allow(dead_code)]
#[tauri::command]
pub async fn sort_tables_by_fk_dependency(
state: tauri::State<'_, std::sync::Arc<AppState>>,
connection_id: String,
database: String,
schema: String,
tables: Vec<String>,
parents_first: bool,
) -> Result<Vec<String>, String> {
dbx_core::transfer::sort_tables_by_fk_dependency(&state, &connection_id, &database, &schema, &tables, parents_first)
.await
}