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To allow these to be reverted, we store mutation logs per object store in the scope of a readwrite transaction to track the modifications that were made by it. If a revert is needed, the log is played in reverse to bring us back to the original state.
55 lines
2.0 KiB
HTML
55 lines
2.0 KiB
HTML
<!DOCTYPE html>
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<script src="include.js"></script>
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<script>
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asyncTest(done => {
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setTimeout(() => {
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spoofCurrentURL("https://example.com/indexeddb-abort-upgrade-reverts-handle-names.html");
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// Steps 5-6 of "abort an upgrade transaction" require that object store
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// and index handles revert their names when an upgrade is aborted, if the
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// store/index existed before the transaction.
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const dbName = "test-abort-revert-names-" + Date.now() + Math.random();
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// Version 1: create a store with an index.
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const req1 = indexedDB.open(dbName, 1);
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req1.onupgradeneeded = (e) => {
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const db = e.target.result;
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const store = db.createObjectStore("original_store");
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store.createIndex("original_index", "key");
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};
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req1.onsuccess = (e) => {
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e.target.result.close();
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// Version 2: rename store and index, then abort.
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let storeHandle, indexHandle;
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const req2 = indexedDB.open(dbName, 2);
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req2.onupgradeneeded = (e) => {
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const tx = e.target.transaction;
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storeHandle = tx.objectStore("original_store");
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indexHandle = storeHandle.index("original_index");
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println("before rename: store=" + storeHandle.name + " index=" + indexHandle.name);
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storeHandle.name = "renamed_store";
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indexHandle.name = "renamed_index";
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println("after rename: store=" + storeHandle.name + " index=" + indexHandle.name);
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tx.abort();
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};
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req2.onerror = (e) => {
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println("after abort: store=" + storeHandle.name + " index=" + indexHandle.name);
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indexedDB.deleteDatabase(dbName);
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done();
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};
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req2.onsuccess = () => {
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println("FAIL: expected error, got success");
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indexedDB.deleteDatabase(dbName);
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done();
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};
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};
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}, 0);
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});
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</script>
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