r2Provider.ts.html•45.1 kB
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<h1><a href="../../../../index.html">All files</a> / <a href="index.html">src/storage/providers/cloudflare</a> r2Provider.ts</h1>
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<span class="strong">96.01% </span>
<span class="quiet">Statements</span>
<span class='fraction'>289/301</span>
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<span class="strong">92.18% </span>
<span class="quiet">Branches</span>
<span class='fraction'>59/64</span>
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<span class="strong">100% </span>
<span class="quiet">Functions</span>
<span class='fraction'>21/21</span>
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<span class="strong">96.01% </span>
<span class="quiet">Lines</span>
<span class='fraction'>289/301</span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
* @fileoverview Implements the IStorageProvider interface for Cloudflare R2.
*
* Performance note: TTL filtering in list operations is not applied at the R2 API level.
* Expired entries are only removed on get operations. For large datasets, consider
* implementing periodic cleanup jobs to remove expired entries.
*
* @module src/storage/providers/cloudflare/r2Provider
*/
import type { R2Bucket } from '@cloudflare/workers-types';
import type {
IStorageProvider,
StorageOptions,
ListOptions,
ListResult,
} from '@/storage/core/IStorageProvider.js';
import { JsonRpcErrorCode, McpError } from '@/types-global/errors.js';
import { ErrorHandler, logger, type RequestContext } from '@/utils/index.js';
type R2Envelope = {
__mcp: { v: 1; expiresAt?: number };
value: unknown;
};
const R2_ENVELOPE_VERSION = 1;
const DEFAULT_LIST_LIMIT = 1000;
export class R2Provider implements IStorageProvider {
private readonly bucket: R2Bucket;
constructor(bucket: R2Bucket) {
if (!bucket) <span class="branch-0 cbranch-no" title="branch not covered" >{</span>
<span class="cstat-no" title="statement not covered" > throw new McpError(</span>
<span class="cstat-no" title="statement not covered" > JsonRpcErrorCode.ConfigurationError,</span>
<span class="cstat-no" title="statement not covered" > 'R2Provider requires a valid R2Bucket instance.',</span>
<span class="cstat-no" title="statement not covered" > );</span>
<span class="cstat-no" title="statement not covered" > }</span>
this.bucket = bucket;
}
private getR2Key(tenantId: string, key: string): string {
return `${tenantId}:${key}`;
}
private buildEnvelope(value: unknown, options?: StorageOptions): R2Envelope {
// Fix: Check for undefined instead of truthy to handle ttl=0 correctly
const expiresAt =
options?.ttl !== undefined ? Date.now() + options.ttl * 1000 : undefined;
return {
__mcp: {
v: R2_ENVELOPE_VERSION,
...(expiresAt !== undefined ? { expiresAt } : {}),
},
value,
};
}
private parseAndValidate<T>(
raw: string,
tenantId: string,
key: string,
context: RequestContext,
): T | null {
try {
const parsed: unknown = JSON.parse(raw);
if (parsed && typeof parsed === 'object' && '__mcp' in parsed) {
const env = parsed as R2Envelope;
const expiresAt = env.__mcp?.expiresAt;
if (expiresAt && Date.now() > expiresAt) {
// expired
return null;
}
return env.value as T;
<span class="branch-0 cbranch-no" title="branch not covered" > }</span>
// legacy: direct value
<span class="cstat-no" title="statement not covered" > return parsed as T;</span>
} catch (error) {
throw new McpError(
JsonRpcErrorCode.SerializationError,
`[R2Provider] Failed to parse JSON for key: ${this.getR2Key(
tenantId,
key,
)}`,
{ ...context, error },
);
}
}
async get<T>(
tenantId: string,
key: string,
context: RequestContext,
): Promise<T | null> {
const r2Key = this.getR2Key(tenantId, key);
return ErrorHandler.tryCatch(
async () => {
logger.debug(`[R2Provider] Getting key: ${r2Key}`, context);
const object = await this.bucket.get(r2Key);
if (object === null) {
return null;
}
const text = await object.text();
const value = this.parseAndValidate<T>(text, tenantId, key, context);
if (value === null) {
// best-effort cleanup if expired
await this.bucket.delete(r2Key).catch(() => {});
logger.debug(
`[R2Provider] Key expired and removed: ${r2Key}`,
context,
);
}
return value;
},
{
operation: 'R2Provider.get',
context,
input: { tenantId, key },
},
);
}
async set(
tenantId: string,
key: string,
value: unknown,
context: RequestContext,
options?: StorageOptions,
): Promise<void> {
const r2Key = this.getR2Key(tenantId, key);
return ErrorHandler.tryCatch(
async () => {
logger.debug(`[R2Provider] Setting key: ${r2Key}`, {
...context,
options,
});
const envelope = this.buildEnvelope(value, options);
const body = JSON.stringify(envelope);
await this.bucket.put(r2Key, body);
logger.debug(`[R2Provider] Successfully set key: ${r2Key}`, context);
},
{
operation: 'R2Provider.set',
context,
input: { tenantId, key },
},
);
}
async delete(
tenantId: string,
key: string,
context: RequestContext,
): Promise<boolean> {
const r2Key = this.getR2Key(tenantId, key);
return ErrorHandler.tryCatch(
async () => {
logger.debug(`[R2Provider] Deleting key: ${r2Key}`, context);
const head = await this.bucket.head(r2Key);
if (head === null) {
logger.debug(
`[R2Provider] Key to delete not found: ${r2Key}`,
context,
);
return false;
}
await this.bucket.delete(r2Key);
logger.debug(
`[R2Provider] Successfully deleted key: ${r2Key}`,
context,
);
return true;
},
{
operation: 'R2Provider.delete',
context,
input: { tenantId, key },
},
);
}
async list(
tenantId: string,
prefix: string,
context: RequestContext,
options?: ListOptions,
): Promise<ListResult> {
const r2Prefix = this.getR2Key(tenantId, prefix);
return ErrorHandler.tryCatch(
async () => {
logger.debug(`[R2Provider] Listing keys with prefix: ${r2Prefix}`, {
...context,
options,
});
const limit = options?.limit ?? DEFAULT_LIST_LIMIT;
const listOptions: import('@cloudflare/workers-types').R2ListOptions = {
prefix: r2Prefix,
limit: limit + 1, // Fetch one extra to determine if there are more
};
if (options?.cursor) {
listOptions.cursor = options.cursor;
}
const listed = await this.bucket.list(listOptions);
const tenantPrefix = `${tenantId}:`;
const keys = listed.objects.map((obj) =>
obj.key.startsWith(tenantPrefix)
? obj.key.substring(tenantPrefix.length)
: obj.key,
);
const hasMore = keys.length > limit;
const resultKeys = hasMore ? keys.slice(0, limit) : keys;
const nextCursor =
'cursor' in listed && listed.truncated ? listed.cursor : undefined;
logger.debug(
`[R2Provider] Found ${resultKeys.length} keys with prefix: ${r2Prefix}`,
context,
);
return {
keys: resultKeys,
nextCursor,
};
},
{
operation: 'R2Provider.list',
context,
input: { tenantId, prefix, options },
},
);
}
async getMany<T>(
tenantId: string,
keys: string[],
context: RequestContext,
): Promise<Map<string, T>> {
return ErrorHandler.tryCatch(
async () => {
if (keys.length === 0) <span class="branch-0 cbranch-no" title="branch not covered" >{</span>
<span class="cstat-no" title="statement not covered" > return new Map<string, T>();</span>
<span class="cstat-no" title="statement not covered" > }</span>
const results = new Map<string, T>();
for (const key of keys) {
const value = await this.get<T>(tenantId, key, context);
if (value !== null) {
results.set(key, value);
}
}
return results;
},
{
operation: 'R2Provider.getMany',
context,
input: { tenantId, keyCount: keys.length },
},
);
}
async setMany(
tenantId: string,
entries: Map<string, unknown>,
context: RequestContext,
options?: StorageOptions,
): Promise<void> {
return ErrorHandler.tryCatch(
async () => {
if (entries.size === 0) <span class="branch-0 cbranch-no" title="branch not covered" >{</span>
<span class="cstat-no" title="statement not covered" > return;</span>
<span class="cstat-no" title="statement not covered" > }</span>
const promises = Array.from(entries.entries()).map(([key, value]) =>
this.set(tenantId, key, value, context, options),
);
await Promise.all(promises);
},
{
operation: 'R2Provider.setMany',
context,
input: { tenantId, entryCount: entries.size },
},
);
}
async deleteMany(
tenantId: string,
keys: string[],
context: RequestContext,
): Promise<number> {
return ErrorHandler.tryCatch(
async () => {
if (keys.length === 0) <span class="branch-0 cbranch-no" title="branch not covered" >{</span>
<span class="cstat-no" title="statement not covered" > return 0;</span>
<span class="cstat-no" title="statement not covered" > }</span>
const promises = keys.map((key) => this.delete(tenantId, key, context));
const results = await Promise.all(promises);
return results.filter((deleted) => deleted).length;
},
{
operation: 'R2Provider.deleteMany',
context,
input: { tenantId, keyCount: keys.length },
},
);
}
async clear(tenantId: string, context: RequestContext): Promise<number> {
return ErrorHandler.tryCatch(
async () => {
const r2Prefix = `${tenantId}:`;
let deletedCount = 0;
let cursor: string | undefined;
let hasMore = true;
while (hasMore) {
const listOpts: import('@cloudflare/workers-types').R2ListOptions = {
prefix: r2Prefix,
limit: 1000,
};
if (cursor) {
listOpts.cursor = cursor;
}
const listed = await this.bucket.list(listOpts);
const deletePromises = listed.objects.map((obj) =>
this.bucket.delete(obj.key),
);
await Promise.all(deletePromises);
deletedCount += listed.objects.length;
hasMore = listed.truncated;
cursor = 'cursor' in listed ? listed.cursor : undefined;
}
logger.info(
`[R2Provider] Cleared ${deletedCount} keys for tenant: ${tenantId}`,
context,
);
return deletedCount;
},
{
operation: 'R2Provider.clear',
context,
input: { tenantId },
},
);
}
}
</pre></td></tr></table></pre>
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