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(#7954) - Connection is reopened, with retry, if automatically closed (idb adapter) #8455

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(#7954) - Connection is reopened, with retry, if automatically closed (idb adapter) #8455

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270 changes: 135 additions & 135 deletions packages/node_modules/pouchdb-adapter-idb/src/allDocs.js
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,6 @@ import {
decodeMetadata,
fetchAttachmentsIfNecessary,
postProcessAttachments,
openTransactionSafely,
idbError
} from './utils';
import runBatchedCursor from './runBatchedCursor';
Expand Down Expand Up @@ -65,21 +64,21 @@ function createKeyRange(start, end, inclusiveEnd, key, descending) {
return null;
}

function idbAllDocs(opts, idb, callback) {
function idbAllDocs(opts, openTransactionSafely, callback) {
var start = 'startkey' in opts ? opts.startkey : false;
var end = 'endkey' in opts ? opts.endkey : false;
var key = 'key' in opts ? opts.key : false;
var keys = 'keys' in opts ? opts.keys : false;
var keys = 'keys' in opts ? opts.keys : false;
var skip = opts.skip || 0;
var limit = typeof opts.limit === 'number' ? opts.limit : -1;
var inclusiveEnd = opts.inclusive_end !== false;

var keyRange ;
var keyRange;
var keyRangeError;
if (!keys) {
keyRange = createKeyRange(start, end, inclusiveEnd, key, opts.descending);
keyRangeError = keyRange && keyRange.error;
if (keyRangeError &&
if (keyRangeError &&
!(keyRangeError.name === "DataError" && keyRangeError.code === 0)) {
// DataError with error code 0 indicates start is less than end, so
// can just do an empty query. Else need to throw
Expand All @@ -93,160 +92,161 @@ function idbAllDocs(opts, idb, callback) {
if (opts.attachments) {
stores.push(ATTACH_STORE);
}
var txnResult = openTransactionSafely(idb, stores, 'readonly');
if (txnResult.error) {
return callback(txnResult.error);
}
var txn = txnResult.txn;
txn.oncomplete = onTxnComplete;
txn.onabort = idbError(callback);
var docStore = txn.objectStore(DOC_STORE);
var seqStore = txn.objectStore(BY_SEQ_STORE);
var metaStore = txn.objectStore(META_STORE);
var docIdRevIndex = seqStore.index('_doc_id_rev');
var results = [];
var docCount;
var updateSeq;

metaStore.get(META_STORE).onsuccess = function (e) {
docCount = e.target.result.docCount;
};

/* istanbul ignore if */
if (opts.update_seq) {
getMaxUpdateSeq(seqStore, function (e) {
if (e.target.result && e.target.result.length > 0) {
updateSeq = e.target.result[0];
}
});
}
openTransactionSafely(stores, 'readonly', function (txnResult) {
if (txnResult.error) {
return callback(txnResult.error);
}
var txn = txnResult.txn;
txn.oncomplete = onTxnComplete;
txn.onabort = idbError(callback);
var docStore = txn.objectStore(DOC_STORE);
var seqStore = txn.objectStore(BY_SEQ_STORE);
var metaStore = txn.objectStore(META_STORE);
var docIdRevIndex = seqStore.index('_doc_id_rev');
var results = [];
var docCount;
var updateSeq;

metaStore.get(META_STORE).onsuccess = function (e) {
docCount = e.target.result.docCount;
};

function getMaxUpdateSeq(objectStore, onSuccess) {
function onCursor(e) {
var cursor = e.target.result;
var maxKey = undefined;
if (cursor && cursor.key) {
maxKey = cursor.key;
}
return onSuccess({
target: {
result: [maxKey]
/* istanbul ignore if */
if (opts.update_seq) {
getMaxUpdateSeq(seqStore, function (e) {
if (e.target.result && e.target.result.length > 0) {
updateSeq = e.target.result[0];
}
});
}
objectStore.openCursor(null, 'prev').onsuccess = onCursor;
}

// if the user specifies include_docs=true, then we don't
// want to block the main cursor while we're fetching the doc
function fetchDocAsynchronously(metadata, row, winningRev) {
var key = metadata.id + "::" + winningRev;
docIdRevIndex.get(key).onsuccess = function onGetDoc(e) {
row.doc = decodeDoc(e.target.result) || {};
if (opts.conflicts) {
var conflicts = collectConflicts(metadata);
if (conflicts.length) {
row.doc._conflicts = conflicts;
function getMaxUpdateSeq(objectStore, onSuccess) {
function onCursor(e) {
var cursor = e.target.result;
var maxKey = undefined;
if (cursor && cursor.key) {
maxKey = cursor.key;
}
return onSuccess({
target: {
result: [maxKey]
}
});
}
fetchAttachmentsIfNecessary(row.doc, opts, txn);
};
}
objectStore.openCursor(null, 'prev').onsuccess = onCursor;
}

function allDocsInner(winningRev, metadata) {
var row = {
id: metadata.id,
key: metadata.id,
value: {
rev: winningRev
}
};
var deleted = metadata.deleted;
if (deleted) {
if (keys) {
// if the user specifies include_docs=true, then we don't
// want to block the main cursor while we're fetching the doc
function fetchDocAsynchronously(metadata, row, winningRev) {
var key = metadata.id + "::" + winningRev;
docIdRevIndex.get(key).onsuccess = function onGetDoc(e) {
row.doc = decodeDoc(e.target.result) || {};
if (opts.conflicts) {
var conflicts = collectConflicts(metadata);
if (conflicts.length) {
row.doc._conflicts = conflicts;
}
}
fetchAttachmentsIfNecessary(row.doc, opts, txn);
};
}

function allDocsInner(winningRev, metadata) {
var row = {
id: metadata.id,
key: metadata.id,
value: {
rev: winningRev
}
};
var deleted = metadata.deleted;
if (deleted) {
if (keys) {
results.push(row);
// deleted docs are okay with "keys" requests
row.value.deleted = true;
row.doc = null;
}
} else if (skip-- <= 0) {
results.push(row);
// deleted docs are okay with "keys" requests
row.value.deleted = true;
row.doc = null;
if (opts.include_docs) {
fetchDocAsynchronously(metadata, row, winningRev);
}
}
} else if (skip-- <= 0) {
results.push(row);
if (opts.include_docs) {
fetchDocAsynchronously(metadata, row, winningRev);
}

function processBatch(batchValues) {
for (var i = 0, len = batchValues.length; i < len; i++) {
if (results.length === limit) {
break;
}
var batchValue = batchValues[i];
if (batchValue.error && keys) {
// key was not found with "keys" requests
results.push(batchValue);
continue;
}
var metadata = decodeMetadata(batchValue);
var winningRev = metadata.winningRev;
allDocsInner(winningRev, metadata);
}
}
}

function processBatch(batchValues) {
for (var i = 0, len = batchValues.length; i < len; i++) {
if (results.length === limit) {
break;
function onBatch(batchKeys, batchValues, cursor) {
if (!cursor) {
return;
}
var batchValue = batchValues[i];
if (batchValue.error && keys) {
// key was not found with "keys" requests
results.push(batchValue);
continue;
processBatch(batchValues);
if (results.length < limit) {
cursor.continue();
}
var metadata = decodeMetadata(batchValue);
var winningRev = metadata.winningRev;
allDocsInner(winningRev, metadata);
}
}

function onBatch(batchKeys, batchValues, cursor) {
if (!cursor) {
return;
}
processBatch(batchValues);
if (results.length < limit) {
cursor.continue();
function onGetAll(e) {
var values = e.target.result;
if (opts.descending) {
values = values.reverse();
}
processBatch(values);
}
}

function onGetAll(e) {
var values = e.target.result;
if (opts.descending) {
values = values.reverse();
}
processBatch(values);
}
function onResultsReady() {
var returnVal = {
total_rows: docCount,
offset: opts.skip,
rows: results
};

function onResultsReady() {
var returnVal = {
total_rows: docCount,
offset: opts.skip,
rows: results
};

/* istanbul ignore if */
if (opts.update_seq && updateSeq !== undefined) {
returnVal.update_seq = updateSeq;
/* istanbul ignore if */
if (opts.update_seq && updateSeq !== undefined) {
returnVal.update_seq = updateSeq;
}
callback(null, returnVal);
}
callback(null, returnVal);
}

function onTxnComplete() {
if (opts.attachments) {
postProcessAttachments(results, opts.binary).then(onResultsReady);
} else {
onResultsReady();
function onTxnComplete() {
if (opts.attachments) {
postProcessAttachments(results, opts.binary).then(onResultsReady);
} else {
onResultsReady();
}
}
}

// don't bother doing any requests if start > end or limit === 0
if (keyRangeError || limit === 0) {
return;
}
if (keys) {
return allDocsKeys(opts.keys, docStore, onBatch);
}
if (limit === -1) { // just fetch everything
return getAll(docStore, keyRange, onGetAll);
}
// else do a cursor
// choose a batch size based on the skip, since we'll need to skip that many
runBatchedCursor(docStore, keyRange, opts.descending, limit + skip, onBatch);
// don't bother doing any requests if start > end or limit === 0
if (keyRangeError || limit === 0) {
return;
}
if (keys) {
return allDocsKeys(opts.keys, docStore, onBatch);
}
if (limit === -1) { // just fetch everything
return getAll(docStore, keyRange, onGetAll);
}
// else do a cursor
// choose a batch size based on the skip, since we'll need to skip that many
runBatchedCursor(docStore, keyRange, opts.descending, limit + skip, onBatch);
});
}

export default idbAllDocs;
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