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import { AwsClient } from "aws4fetch"
import { lazy } from "@opencode-ai/core/util/lazy"
export namespace Storage {
export interface Adapter {
read(path: string): Promise<string | undefined>
write(path: string, value: string): Promise<void>
remove(path: string): Promise<void>
list(options?: { prefix?: string; limit?: number; after?: string; before?: string }): Promise<string[]>
}
function createAdapter(client: AwsClient, endpoint: string, bucket: string): Adapter {
const base = `${endpoint}/${bucket}`
return {
async read(path: string): Promise<string | undefined> {
const response = await client.fetch(`${base}/${path}`)
if (response.status === 404) return undefined
if (!response.ok) throw new Error(`Failed to read ${path}: ${response.status}`)
return response.text()
},
async write(path: string, value: string): Promise<void> {
const response = await client.fetch(`${base}/${path}`, {
method: "PUT",
body: value,
headers: {
"Content-Type": "application/json",
},
})
if (!response.ok) throw new Error(`Failed to write ${path}: ${response.status}`)
},
async remove(path: string): Promise<void> {
const response = await client.fetch(`${base}/${path}`, {
method: "DELETE",
})
if (!response.ok) throw new Error(`Failed to remove ${path}: ${response.status}`)
},
async list(options?: { prefix?: string; limit?: number; after?: string; before?: string }): Promise<string[]> {
const prefix = options?.prefix || ""
const params = new URLSearchParams({ "list-type": "2", prefix })
if (options?.limit) params.set("max-keys", options.limit.toString())
if (options?.after) {
const afterPath = prefix + options.after + ".json"
params.set("start-after", afterPath)
}
const response = await client.fetch(`${base}?${params}`)
if (!response.ok) throw new Error(`Failed to list ${prefix}: ${response.status}`)
const xml = await response.text()
const keys: string[] = []
const regex = /<Key>([^<]+)<\/Key>/g
let match
while ((match = regex.exec(xml)) !== null) {
keys.push(match[1])
}
if (options?.before) {
const beforePath = prefix + options.before + ".json"
return keys.filter((key) => key < beforePath)
}
return keys
},
}
}
function s3(): Adapter {
const bucket = process.env.OPENCODE_STORAGE_BUCKET!
const region = process.env.OPENCODE_STORAGE_REGION || "us-east-1"
const client = new AwsClient({
region,
accessKeyId: process.env.OPENCODE_STORAGE_ACCESS_KEY_ID!,
secretAccessKey: process.env.OPENCODE_STORAGE_SECRET_ACCESS_KEY!,
})
return createAdapter(client, `https://s3.${region}.amazonaws.com`, bucket)
}
function r2() {
const accountId = process.env.OPENCODE_STORAGE_ACCOUNT_ID!
const client = new AwsClient({
accessKeyId: process.env.OPENCODE_STORAGE_ACCESS_KEY_ID!,
secretAccessKey: process.env.OPENCODE_STORAGE_SECRET_ACCESS_KEY!,
})
return createAdapter(client, `https://${accountId}.r2.cloudflarestorage.com`, process.env.OPENCODE_STORAGE_BUCKET!)
}
const adapter = lazy(() => {
const type = process.env.OPENCODE_STORAGE_ADAPTER
if (type === "r2") return r2()
if (type === "s3") return s3()
throw new Error("No storage adapter configured")
})
function resolve(key: string[]) {
return key.join("/") + ".json"
}
export async function read<T>(key: string[]) {
const result = await adapter().read(resolve(key))
if (!result) return undefined
return JSON.parse(result) as T
}
export function write<T>(key: string[], value: T) {
return adapter().write(resolve(key), JSON.stringify(value))
}
export function remove(key: string[]) {
return adapter().remove(resolve(key))
}
export async function list(options?: { prefix?: string[]; limit?: number; after?: string; before?: string }) {
const p = options?.prefix ? options.prefix.join("/") + (options.prefix.length ? "/" : "") : ""
const result = await adapter().list({
prefix: p,
limit: options?.limit,
after: options?.after,
before: options?.before,
})
return result.map((x) => x.replace(/\.json$/, "").split("/"))
}
export async function update<T>(key: string[], fn: (draft: T) => void) {
const val = await read<T>(key)
if (!val) throw new Error("Not found")
fn(val)
await write(key, val)
return val
}
}
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