Prisma•6mo ago

Missing configured driver adapter

Hi When using the driver adapters & query compiler, in combination with the readReplicas extension, I get this vague error. Is this a bug, unsupported, or am I overlooking somethiing?

[next]  ⨯ Error [PrismaClientInitializationError]: Missing configured driver adapter. Engine type `client` requires an active driver adapter. Please check your PrismaClient initialization code.
[next]     at Array.map (<anonymous>)
[next]     at createReplicaPrismaClient (src/libs/prisma/factory.ts:125:15)
[next]     at <unknown> (src/libs/prisma/plain/base-client.ts:13:28)
[next]   123 |  }
[next]   124 |
[next] > 125 |  return client.$extends(readReplicas({ url: connectionString }));
[next]       |               ^
[next]   126 | }
[next]   127 |
[next]   128 | /** {

[next]  ⨯ Error [PrismaClientInitializationError]: Missing configured driver adapter. Engine type `client` requires an active driver adapter. Please check your PrismaClient initialization code.
[next]     at Array.map (<anonymous>)
[next]     at createReplicaPrismaClient (src/libs/prisma/factory.ts:125:15)
[next]     at <unknown> (src/libs/prisma/plain/base-client.ts:13:28)
[next]   123 |  }
[next]   124 |
[next] > 125 |  return client.$extends(readReplicas({ url: connectionString }));
[next]       |               ^
[next]   126 | }
[next]   127 |
[next]   128 | /** {

export function createReplicaPrismaClient({
    connectionString,
    enableLogging = process.env.PRISMA_LOG === "true",
    readReplicaUrl = process.env.DATABASE_URL_READ_REPLICA,
}: CreatePrismaClientOptions) {
    // Create postgres adapter
    const adapter = new PrismaPg({
        connectionString,
    });

    const client = new PrismaClient({
        adapter,
        log: enableLogging ? ["query", "info", "warn", "error"] : ["error"],
    });

    // Apply read replica extension if configured
    if (readReplicaUrl) {
        return client.$extends(readReplicas({ url: readReplicaUrl }));
    }

    return client.$extends(readReplicas({ url: connectionString }));
}

export function createReplicaPrismaClient({
    connectionString,
    enableLogging = process.env.PRISMA_LOG === "true",
    readReplicaUrl = process.env.DATABASE_URL_READ_REPLICA,
}: CreatePrismaClientOptions) {
    // Create postgres adapter
    const adapter = new PrismaPg({
        connectionString,
    });

    const client = new PrismaClient({
        adapter,
        log: enableLogging ? ["query", "info", "warn", "error"] : ["error"],
    });

    // Apply read replica extension if configured
    if (readReplicaUrl) {
        return client.$extends(readReplicas({ url: readReplicaUrl }));
    }

    return client.$extends(readReplicas({ url: connectionString }));
}

8 Replies

Prisma AI Help•6mo ago

You decided to hold for human wisdom. We'll chime in soon! Meanwhile, #ask-ai is there if you need a quick second opinion.

Nurul•6mo ago

Hi @Niels! Does the error go away if you remove readReplicas extension? Which prisma version are you using?

NielsOP•6mo ago

Yes indeed, using latest for both the extension & prisma.

Nurul•6mo ago

Thanks for confirming. And this happens when you try to generate PrismaClient with npx prisma generate?

NielsOP•5mo ago

No, it happens during runtime. The client is generated within the function, and this function is only called during requests. Have there been other reports of the same issue?

Nurul•5mo ago

No, I am not aware of any other reports. Would it be possible to provide a minimal reproducible example so that I can raise it internally?

NielsOP•5mo ago

Sure 👍

NielsOP•3mo ago

Fixed it myself, the extension assumed that the client could be constructed with a datasourceUrl, but from now on, it can either be with an adapter OR datasourceUrl. https://github.com/prisma/extension-read-replicas/blob/7874a2122f9b0b529f03a16e020316bf9bb733c3/src/ReplicaManager.ts#L33

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Missing configured driver adapter

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