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  • Azure Blob CSV file to Azure Blob NDJSON file

Connect Azure Blob CSV file and Azure Blob NDJSON file in our serverless environment

Use this template to Read CSV file entries from Azure Blob container using them to create NDJSON file entries in Azure Blob Container.

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Read CSV file entries from Azure Blob container

Used integrations:
class AzureBlobSourceReadRemoteCsv {
    async init() {
        // TODO: Create your azure blob credential
        // More info at https://yepcode.io/docs/integrations/azure-blob/#credential-configuration
        this.azureBlob = yepcode.integration.azureBlob(
            "your-azure-blob-credential-name"
        );
    }

    async fetch(publish, done) {
        // TODO: customize the container name and blob name to download
        // // More info at https://docs.microsoft.com/en-us/javascript/api/@azure/storage-blob/blobserviceclient?view=azure-node-latest#@azure-storage-blob-blobserviceclient-getcontainerclient
        const containerClient = this.azureBlob.getContainerClient("container-name");
        const blobClient = containerClient.getBlobClient("blob-name");
        const result = await blobClient.download();

        // result.readableStreamBody is a stream of object content
        result.readableStreamBody
            .pipe(
                csv.parse({
                    delimiter: ",",
                    columns: true,
                })
            )
            .on("data", publish)
            .on("end", done);
    }

    async close() {}
}

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Create NDJSON file entries in Azure Blob Container

Used integrations:
class AzureBlobTargetUploadNdjson {
    async init() {
        // TODO: Create your azure blob credential
        // More info at https://yepcode.io/docs/integrations/azure-blob/#credential-configuration
        const azureBlob = yepcode.integration.azureBlob(
            "your-azure-blob-credential-name"
        );

        // TODO: customize the container name and blob name to upload
        // // More info at https://docs.microsoft.com/en-us/javascript/api/@azure/storage-blob/blobserviceclient?view=azure-node-latest#@azure-storage-blob-blobserviceclient-getcontainerclient
        const containerClient = azureBlob.getContainerClient("container-name");
        const blockBlobClient = containerClient.getBlockBlobClient("blob-name");

        // Transforms the items into a ndjson format
        this.stringifier = ndjson.stringify();
        this.upload = blockBlobClient.uploadStream(this.stringifier);

    }

    async consume(item) {
        this.stringifier.write(item);
    }

    async close() {
        try {
            this.stringifier.end();
        } catch (error) {
            console.error(`Error ending stringifier`, error);
        }
        try {
            await this.upload;
        } catch (error) {
            console.error(`Error ending upload`, error);
        }
    }
}

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