Cloudflare Developers•2mo ago

i have a project that's using durable

i have a project that's using durable objects in various workers environments, which was originally set up with the durable objects attached to their own worker. i recently tried to consolidate the durable objects to a single worker, and when i tried to set up my wrangler file to transfer the durable object storage to the new worker, the transfer seems to have failed. the durable objects don't have any data in the new worker. here's how i set up my DO migrations. did i do something wrong? i wasn't able to figure this out based on the documentation.

"durable_objects": {
    "bindings": [
        {
            "name": "DO_1",
            "class_name": "FirstDurableObjectClassV2"
        },
        {
            "name": "DO_2",
            "class_name": "SecondDurableObjectClassV2"
        },
    ]
},
"migrations": [
    {
        "tag": "v1",
        "new_sqlite_classes": [
            "FirstDurableObject",
            "SecondDurableObject",
        ],
    },
    {
        "tag": "v2",
        "transferred_classes": [
            {
                "from": "FirstDurableObjectClass",
                "from_script": "old-script",
                "to": "FirstDurableObjectClassV2"
            },
            {
                "from": "SecondDurableObjectClass",
                "from_script": "old-script",
                "to": "SecondDurableObjectClassV2"
            },
        ]
    }
]

"durable_objects": {
    "bindings": [
        {
            "name": "DO_1",
            "class_name": "FirstDurableObjectClassV2"
        },
        {
            "name": "DO_2",
            "class_name": "SecondDurableObjectClassV2"
        },
    ]
},
"migrations": [
    {
        "tag": "v1",
        "new_sqlite_classes": [
            "FirstDurableObject",
            "SecondDurableObject",
        ],
    },
    {
        "tag": "v2",
        "transferred_classes": [
            {
                "from": "FirstDurableObjectClass",
                "from_script": "old-script",
                "to": "FirstDurableObjectClassV2"
            },
            {
                "from": "SecondDurableObjectClass",
                "from_script": "old-script",
                "to": "SecondDurableObjectClassV2"
            },
        ]
    }
]

7 Replies

sheffieldOP•2mo ago

any ideas/help here? i'm pretty stumped

Larry•2mo ago

Have you moved the code into this Worker code file and export them under those names? That's all I can think of right now.

sheffieldOP•2mo ago

yep! first thing i checked 🙂

Unsmart•2mo ago

As per the documentation you must not run a creation migration. In order for it to be transferred the transfer migration must be the one that actually creates the binding. https://developers.cloudflare.com/durable-objects/reference/durable-objects-migrations/#transfer-migration

sheffieldOP•2mo ago

thanks! my understanding is that with this setup, the new_sqlite_classes creation migration shouldn't interfere because the durable object class names are different—is that not the case?

Larry•2mo ago

That's how I read that note also, but did you try removing the v1 migrations? If there is production data in there, make sure you have a backup.

sheffieldOP•4w ago

i haven't tried that, but will give it a shot—thanks

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i have a project that's using durable

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