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Switch idb backend to heed and add support for more key values and used better concurrency measures and updated interface between backend and scripts. Signed-off-by: Ashwin Naren <arihant2math@gmail.com>
150 lines
4 KiB
Rust
150 lines
4 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use ipc_channel::ipc::IpcSender;
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use serde::{Deserialize, Serialize};
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use servo_url::origin::ImmutableOrigin;
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#[derive(Debug, Deserialize, Serialize)]
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pub enum IndexedDBThreadReturnType {
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Open(Option<u64>),
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NextSerialNumber(u64),
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StartTransaction(Result<(), ()>),
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Commit(Result<(), ()>),
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Version(u64),
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CreateObjectStore(Option<String>),
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UpgradeVersion(Result<u64, ()>),
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KVResult(Option<Vec<u8>>),
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Exit,
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}
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#[derive(Debug, Deserialize, Serialize)]
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pub enum IndexedDBTxnMode {
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Readonly,
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Readwrite,
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Versionchange,
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}
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// https://www.w3.org/TR/IndexedDB-2/#key-type
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#[derive(Clone, Debug, Deserialize, Serialize)]
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pub enum IndexedDBKeyType {
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Number(Vec<u8>),
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String(Vec<u8>),
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Binary(Vec<u8>),
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Date(Vec<u8>),
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// FIXME:(arihant2math) implment Array(),
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}
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// Operations that are not executed instantly, but rather added to a
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// queue that is eventually run.
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#[derive(Debug, Deserialize, Serialize)]
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pub enum AsyncOperation {
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/// Gets the value associated with the given key in the associated idb data
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GetItem(
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IndexedDBKeyType, // Key
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),
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/// Sets the value of the given key in the associated idb data
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PutItem(
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IndexedDBKeyType, // Key
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Vec<u8>, // Value
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bool, // Should overwrite
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),
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/// Removes the key/value pair for the given key in the associated idb data
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RemoveItem(
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IndexedDBKeyType, // Key
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),
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}
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#[derive(Debug, Deserialize, Serialize)]
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pub enum SyncOperation {
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// Upgrades the version of the database
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UpgradeVersion(
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IpcSender<IndexedDBThreadReturnType>,
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ImmutableOrigin,
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String, // Database
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u64, // Serial number for the transaction
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u64, // Version to upgrade to
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),
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// Checks if an object store has a key generator, used in e.g. Put
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HasKeyGenerator(
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IpcSender<bool>,
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ImmutableOrigin,
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String, // Database
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String, // Store
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),
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// Commits changes of a transaction to the database
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Commit(
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IpcSender<IndexedDBThreadReturnType>,
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ImmutableOrigin,
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String, // Database
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u64, // Transaction serial number
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),
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// Creates a new store for the database
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CreateObjectStore(
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IpcSender<Result<(), ()>>,
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ImmutableOrigin,
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String, // Database
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String, // Store
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bool,
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),
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OpenDatabase(
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IpcSender<u64>, // Returns the version
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ImmutableOrigin,
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String, // Database
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Option<u64>, // Eventual version
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),
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// Deletes the database
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DeleteDatabase(
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IpcSender<Result<(), ()>>,
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ImmutableOrigin,
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String, // Database
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),
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// Returns an unique identifier that is used to be able to
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// commit/abort transactions.
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RegisterNewTxn(
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IpcSender<u64>,
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ImmutableOrigin,
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String, // Database
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),
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// Starts executing the requests of a transaction
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// https://www.w3.org/TR/IndexedDB-2/#transaction-start
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StartTransaction(
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IpcSender<Result<(), ()>>,
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ImmutableOrigin,
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String, // Database
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u64, // The serial number of the mutating transaction
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),
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// Returns the version of the database
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Version(
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IpcSender<u64>,
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ImmutableOrigin,
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String, // Database
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),
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/// Send a reply when done cleaning up thread resources and then shut it down
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Exit(IpcSender<IndexedDBThreadReturnType>),
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}
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#[derive(Debug, Deserialize, Serialize)]
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pub enum IndexedDBThreadMsg {
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Sync(SyncOperation),
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Async(
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IpcSender<Option<Vec<u8>>>, // Sender to send the result of the async operation
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ImmutableOrigin,
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String, // Database
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String, // ObjectStore
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u64, // Serial number of the transaction that requests this operation
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IndexedDBTxnMode,
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AsyncOperation,
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),
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}
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