Cloudflare Workflows

Vytvářejte trvalé vícekrokové aplikace na Cloudflare Workers pomocí Workflows.

export class ImageProcessingWorkflow extends WorkflowEntrypoint {
	async run(event: WorkflowEvent, step: WorkflowStep) {
		const imageData = await step.do('fetch image', async () => {
			const object = await this.env.BUCKET.get(event.payload.imageKey);
			return await object.arrayBuffer();
		});

		const description = await step.do('generate description', async () => {
			const imageArray = Array.from(new Uint8Array(imageData));
			return await this.env.AI.run('@cf/llava-hf/llava-1.5-7b-hf', {
				image: imageArray,
				prompt: 'Describe this image in one sentence',
				max_tokens: 50,
			});
		});

		await step.waitForEvent('await approval', {
			event: 'approved',
			timeout: '24 hours',
		});

		await step.do('publish', async () => {
			await this.env.BUCKET.put(`public/${event.payload.imageKey}`, imageData);
		});
	}
}