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Improve IndexedDB error handling

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This commit is contained in:
Thibaut 2015-01-15 23:22:42 -05:00
parent eecbade78e
commit 58a463d3d7
1 changed files with 34 additions and 12 deletions
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46
assets/javascripts/app/db.coffee
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@ -25,7 +25,7 @@ class app.DB
try
db = event.target.result
unless @checkedBuggyIDB
db.transaction(['docs', app.docs.all()[0].slug], 'readwrite').abort() # https://bugs.webkit.org/show_bug.cgi?id=136937
@idbTransaction(db, stores: ['docs', app.docs.all()[0].slug], mode: 'readwrite').abort() # https://bugs.webkit.org/show_bug.cgi?id=136937
@checkedBuggyIDB = true
catch
try db.close()
@ -66,10 +66,14 @@ class app.DB
onError()
return
txn = db.transaction ['docs', doc.slug], 'readwrite'
txn = @idbTransaction db, stores: ['docs', doc.slug], mode: 'readwrite', ignoreError: false
txn.oncomplete = =>
@cachedDocs?[doc.slug] = doc.mtime
if txn.error then onError() else onSuccess()
onSuccess()
return
txn.onerror = (event) ->
event.preventDefault()
onError(event)
return
store = txn.objectStore(doc.slug)
@ -87,10 +91,14 @@ class app.DB
onError()
return
txn = db.transaction ['docs', doc.slug], 'readwrite'
txn = @idbTransaction db, stores: ['docs', doc.slug], mode: 'readwrite', ignoreError: false
txn.oncomplete = =>
delete @cachedDocs?[doc.slug]
if txn.error then onError() else onSuccess()
onSuccess()
return
txn.onerror = (event) ->
event.preventDefault()
onError(event)
return
store = txn.objectStore(doc.slug)
@ -106,12 +114,12 @@ class app.DB
fn(version)
return
@db (db) ->
@db (db) =>
unless db
fn(false)
return
txn = db.transaction ['docs'], 'readonly'
txn = @idbTransaction db, stores: ['docs'], mode: 'readonly'
store = txn.objectStore('docs')
req = store.get(doc.slug)
@ -134,13 +142,15 @@ class app.DB
fn(versions)
return
@db (db) ->
@db (db) =>
unless db
fn(false)
return
txn = db.transaction ['docs'], 'readonly'
txn.oncomplete = -> fn(result)
txn = @idbTransaction db, stores: ['docs'], mode: 'readonly'
txn.oncomplete = ->
fn(result)
return
store = txn.objectStore('docs')
result = {}
@ -182,7 +192,7 @@ class app.DB
onError()
return
txn = db.transaction [entry.doc.slug], 'readonly'
txn = @idbTransaction db, stores: [entry.doc.slug], mode: 'readonly'
store = txn.objectStore(entry.doc.slug)
req = store.get(entry.dbPath())
@ -199,7 +209,7 @@ class app.DB
loadDocsCache: (db) ->
@cachedDocs = {}
txn = db.transaction ['docs'], 'readonly'
txn = @idbTransaction db, stores: ['docs'], mode: 'readonly'
store = txn.objectStore('docs')
req = store.openCursor()
@ -216,6 +226,18 @@ class app.DB
shouldLoadWithIDB: (entry) ->
@useIndexedDB and (not @cachedDocs or @cachedDocs[entry.doc.slug])
idbTransaction: (db, options) ->
txn = db.transaction(options.stores, options.mode)
unless options.ignoreError is false
txn.onerror = (event) ->
event.preventDefault()
return
unless options.ignoreAbort is false
txn.onabort = (event) ->
event.preventDefault()
return
txn
reset: ->
try indexedDB?.deleteDatabase(NAME) catch
return