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feat(storage): Add getDownloadUrl
method to the Storage API
#2036
Conversation
src/storage/storage.ts
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if (!metadata?.metadata?.firebaseStorageDownloadTokens) { | ||
throw new FirebaseError({ | ||
code: 'storage/no-download-token', | ||
message: 'No download token available. Please create one in the Firebase Console.', |
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we actually do have a token API that the console uses. We would have to implement it here as well but perhaps we could point users to that method instead of the console
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Thanks Maneesh for putting it together. I really think our customers would appreciate it.
However our download url design is a hot mess right now and I'm hoping we can clean it up in 2023. This means getDownloadUrl() in the current form will either be deprecated or at least discouraged.
Does it make sense to add it here if we are planning to deprecate it a few months later?
src/storage/cloud-extensions.ts
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// Gets metadata from firebase backend instead of GCS | ||
getFirebaseMetadata(): Promise<FirebaseMetadata> { | ||
// We need to talk to the firebase storage endpoints instead of the google cloud bucket endpoint | ||
const endpoint = "https://firebasestorage.googleapis.com/v0"; |
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How can configure this for testing against our internal testing endpoints or emulator?
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The expectation is that you call getStorage(app, 'myendpoint')
or getStorage(undefined, 'myEndpoint')
src/storage/cloud-extensions.ts
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constructor( | ||
bucket: FirebaseStorageBucket, | ||
name: string, | ||
private endpoint: string, |
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I'm curious how other SDKs handle env overrides. Could you confirm this is commonly how this is implemented?
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Firestore just uses the google cloud package and does something like this:
const settings: Settings = {
host: "localhost:8080",
ssl: false
};
// Initialize Firestore
const firestore = new Firestore(settings);
For RTDB, we ask them to override the databaseUrl:
admin.initializeApp({
credential: admin.credential.cert(serviceAccount),
databaseURL: "https://movie-picker-729bb-default-rtdb.firebaseio.com",
});
So I don't think there's a best practices way to get this done. My recommendation is to do something like:
getStorage({ host: 'myhosturl' });
So that we can allow for more options to be customized down the road. WDYT?
EDIT: Introducing a new ENV var seems cleaner than piping through a bunch of classes. WDYT?
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Ack, I don't have a strong sense of what design is right here, env var sounds fine.
Eventually these patterns should be consolidated imo, but that can happen async.
src/storage/cloud-extensions.ts
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* Gets metadata from firebase backend instead of GCS | ||
* @returns {FirebaseMetadata} | ||
*/ | ||
getFirebaseMetadata(): Promise<FirebaseMetadata> { |
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should this be private?
src/storage/cloud-extensions.ts
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}); | ||
} | ||
const [token] = downloadTokens.split(","); | ||
return `${this.endpoint}/v0/b/${this.bucket.name}/o/${encodeURIComponent( |
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seems like there's a bug here, getFirebaseMetadata above assumes this.endpoint
has the /v0
url part.
src/storage/cloud-extensions.ts
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this.endpoint = endpoint; | ||
} | ||
/** | ||
* |
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update
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Did you want me to add more information about this?
src/storage/cloud-extensions.ts
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super(bucket, name, options); | ||
} | ||
/** | ||
* Gets metadata from firebase backend instead of GCS |
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typo: Firebase
src/storage/storage.ts
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@@ -57,10 +60,12 @@ export class Storage { | |||
|
|||
process.env.STORAGE_EMULATOR_HOST = `http://${process.env.FIREBASE_STORAGE_EMULATOR_HOST}`; | |||
} | |||
this.endpoint = (userEndpoint || process.env.STORAGE_EMULATOR_HOST || 'https://firebasestorage.googleapis.com') + '/v0'; |
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Since we already have one for the emulator host, does it make sense to use another env var for the endpoint override?
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Small nits but overall lgtm
src/storage/cloud-extensions.ts
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uri, | ||
}, | ||
(err, body) => { | ||
console.log(body); |
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remove
src/storage/cloud-extensions.ts
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* @returns {FirebaseMetadata} | ||
*/ | ||
private getFirebaseMetadata(): Promise<FirebaseMetadata> { | ||
// Build any custom headers based on the defined interceptors on the parent |
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is this comment still accurate?
src/storage/cloud-extensions.ts
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} | ||
|
||
/** | ||
* Gets the download URL for a given file. Will throw a `FirebaseError` if there are no download tokens available. |
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src/storage/cloud-extensions.ts
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|
||
/** | ||
* Gets the download URL for a given file. Will throw a `FirebaseError` if there are no download tokens available. | ||
* @returns {Promise<string>} |
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Please update with a description of the result or remove as this is redundant with the method signature
src/storage/cloud-extensions.ts
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export class FirebaseStorageClient extends StorageClient { | ||
/** | ||
* | ||
* @param bucketName |
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update?
src/storage/cloud-extensions.ts
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*/ | ||
export class FirebaseStorageBucket extends Bucket { | ||
/** | ||
* @param name |
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update?
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overall direction lgtm, small nits, can you go through the whole PR to make sure its up to date?
src/storage/index.ts
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} | ||
/** | ||
* Gets metadata from Firebase backend instead of GCS | ||
* @returns {FirebaseMetadata} |
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small nit: jsdoc clauses unnecessary unless they add context that cant be inferred from the method signature
go/java-practices/javadoc#param
src/storage/index.ts
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|
||
/** | ||
* Gets the download URL for a given file. Will throw a `FirebaseError` if there are no download tokens available. | ||
* @returns {Promise<string>} |
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same comment
src/storage/index.ts
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endpoint: string, | ||
file: File | ||
): Promise<FirebaseMetadata> { | ||
// Build any custom headers based on the defined interceptors on the parent |
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is this comment still up to date?
etc/firebase-admin.storage.api.md
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@@ -17,7 +19,8 @@ export function getStorage(app?: App): Storage; | |||
// @public | |||
export class Storage { | |||
get app(): App; | |||
bucket(name?: string): Bucket; | |||
// Warning: (ae-forgotten-export) The symbol "FirebaseStorageBucket" needs to be exported by the entry point index.d.ts |
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update?
test/integration/storage.spec.ts
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@@ -38,6 +37,12 @@ describe('admin.storage', () => { | |||
return verifyBucket(bucket, 'storage().bucket(string)') | |||
.should.eventually.be.fulfilled; | |||
}); | |||
it('bucket(string) creates a download token', async () => { |
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update tests
Bumping this. cc @maneesht Edit: In the meantime, I got it to work by using the code from this PR directly in my service, thanks again @maneesht !! utils: export interface FirebaseMetadata {
name: string
bucket: string
generation: string
metageneration: string
contentType: string
timeCreated: string
updated: string
storageClass: string
size: string
md5Hash: string
contentEncoding: string
contentDisposition: string
crc32c: string
etag: string
downloadTokens?: string
}
export function getFirebaseMetadata(
endpoint: string,
file: File,
): Promise<FirebaseMetadata> {
const uri = `${endpoint}/b/${file.bucket.name}/o/${encodeURIComponent(
file.name,
)}`
return new Promise((resolve, reject) => {
file.storage.makeAuthenticatedRequest(
{
method: 'GET',
uri,
},
(err, body) => {
if (err) {
reject(err)
} else {
resolve(body)
}
},
)
})
}
export async function getDownloadUrl(file: File): Promise<string> {
const endpoint =
(process.env.STORAGE_EMULATOR_HOST ||
'https://firebasestorage.googleapis.com') + '/v0'
const { downloadTokens } = await getFirebaseMetadata(endpoint, file)
if (!downloadTokens) {
throw new Error(
'No download token available. Please create one in the Firebase Console.',
)
}
const [token] = downloadTokens.split(',')
return `${endpoint}/b/${file.bucket.name}/o/${encodeURIComponent(
file.name,
)}?alt=media&token=${token}`
} service generateDownloadUrl(filePath: string) {
const bucket = firebaseAdmin
.storage()
.bucket(this.configService.get('FIREBASE_STORAGE_BUCKET'))
const file = bucket.file(filePath)
return getDownloadUrl(file)
} |
Hi, we expect this change to rollout this week. You'll be able to follow along with the release at https://firebase.google.com/support/release-notes/admin/node |
This feature is now available in https://github.com/firebase/firebase-admin-node/releases/tag/v11.10.0 🥳 |
Congrats and thanks, @maneesht! |
Fixes #1352