A tool for tailing a labelers' firehose, rehydrating, and storing records for future analysis of moderation decisions.
Merge pull request #2 from skywatch-bsky/feat/profile-avatar-banner-hydration
feat: hydrate profile avatars and banners
authored by
Scarnecchia
and committed by
GitHub
4006d353
6b847815
+562
-51
+3
.env.example
+3
.env.example
···
6
6
PDS=bsky.social
7
7
WSS_URL=wss://your-labeler-service.com/xrpc/com.atproto.label.subscribeLabels
8
8
9
+
# PLC Directory (for DID resolution)
10
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PLC_ENDPOINT=https://plc.wtf
11
+
9
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# Blob & Image Handling
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HYDRATE_BLOBS=false # Set to true to download images/videos
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BLOB_STORAGE_TYPE=local # 'local' or 's3'
+164
docs/profile-blob-hydration.md
+164
docs/profile-blob-hydration.md
···
1
+
# Profile Blob Hydration - Implementation Notes
2
+
3
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## Overview
4
+
5
+
This document captures key learnings from implementing avatar and banner blob hydration for Bluesky profiles.
6
+
7
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## Key Discoveries
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+
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### 1. CID Deserialization in @atproto/api
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+
11
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The `@atproto/api` library deserializes blob references from their JSON `$link` representation into CID class objects.
12
+
13
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**Raw JSON from API:**
14
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```json
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{
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"avatar": {
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"$type": "blob",
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"ref": {
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"$link": "bafkreigg3s6plegjncmxubeufbohj3qasbm4r23q2x7zlivdhccfqfypve"
20
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},
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"mimeType": "image/jpeg",
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"size": 101770
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+
}
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}
25
+
```
26
+
27
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**What you get in TypeScript:**
28
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```typescript
29
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record.avatar.ref // CID object with { code, version, hash, ... }
30
+
```
31
+
32
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**Solution:**
33
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```typescript
34
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const cid = record.avatar.ref.toString(); // "bafkrei..."
35
+
```
36
+
37
+
### 2. PDS Endpoint Resolution
38
+
39
+
Users can be on different Personal Data Servers (PDS), not just `bsky.social`. Blobs must be fetched from the user's actual PDS.
40
+
41
+
**Process:**
42
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1. Query PLC directory for DID document: `https://plc.wtf/${did}`
43
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2. Find service with `id: "#atproto_pds"` and `type: "AtprotoPersonalDataServer"`
44
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3. Extract `serviceEndpoint` URL
45
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4. Use that endpoint for `com.atproto.sync.getBlob`
46
+
47
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**Example:**
48
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```typescript
49
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const didDoc = await fetch(`https://plc.wtf/${did}`).then(r => r.json());
50
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const pdsService = didDoc.service?.find(s =>
51
+
s.id === "#atproto_pds" && s.type === "AtprotoPersonalDataServer"
52
+
);
53
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const pdsEndpoint = pdsService.serviceEndpoint; // e.g., "https://waxcap.us-west.host.bsky.network"
54
+
```
55
+
56
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### 3. Correct Blob Fetching
57
+
58
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**Don't use CDN paths** - they don't work reliably for all blobs and require authentication context.
59
+
60
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**Use the AT Protocol API:**
61
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```typescript
62
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const blobUrl = `${pdsEndpoint}/xrpc/com.atproto.sync.getBlob?did=${did}&cid=${cid}`;
63
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const response = await fetch(blobUrl);
64
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const blobData = Buffer.from(await response.arrayBuffer());
65
+
```
66
+
67
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### 4. Database Schema Design
68
+
69
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**Separate tables for different blob types:**
70
+
71
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- `blobs` table: Post images with FK to `posts(uri)`
72
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- `profile_blobs` table: Avatars/banners with FK to `profiles(did)`
73
+
74
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This allows proper relational queries and analysis.
75
+
76
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**Profile blobs schema:**
77
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```sql
78
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CREATE TABLE profile_blobs (
79
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did TEXT NOT NULL,
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blob_type TEXT NOT NULL CHECK (blob_type IN ('avatar', 'banner')),
81
+
blob_cid TEXT NOT NULL,
82
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sha256 TEXT NOT NULL,
83
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phash TEXT,
84
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storage_path TEXT,
85
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mimetype TEXT,
86
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captured_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
87
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PRIMARY KEY (did, blob_type, captured_at),
88
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FOREIGN KEY (did) REFERENCES profiles(did)
89
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);
90
+
```
91
+
92
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### 5. Change Tracking
93
+
94
+
Including `captured_at` in the primary key allows tracking when users change their avatars/banners.
95
+
96
+
**Query latest state:**
97
+
```sql
98
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SELECT * FROM profile_blobs
99
+
WHERE did = ? AND blob_type = ?
100
+
ORDER BY captured_at DESC
101
+
LIMIT 1
102
+
```
103
+
104
+
**Only insert if changed:**
105
+
```typescript
106
+
const latest = await findLatestByDidAndType(did, type);
107
+
if (latest && latest.blob_cid === cid) {
108
+
return; // No change, skip
109
+
}
110
+
// Insert new row with current timestamp
111
+
```
112
+
113
+
### 6. Sentinel Values for Missing Data
114
+
115
+
Use empty string (`""`) to distinguish "we checked, user has no avatar" from NULL "we haven't checked yet".
116
+
117
+
```typescript
118
+
if (record.avatar?.ref) {
119
+
avatarCid = record.avatar.ref.toString();
120
+
} else {
121
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avatarCid = ""; // Explicitly checked, not present
122
+
}
123
+
```
124
+
125
+
This prevents infinite re-hydration loops for profiles without avatars.
126
+
127
+
### 7. Profile Re-hydration Logic
128
+
129
+
```typescript
130
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const existingProfile = await findByDid(did);
131
+
const needsRehydration = existingProfile &&
132
+
(existingProfile.avatar_cid === null || existingProfile.banner_cid === null);
133
+
134
+
if (existingProfile && !needsRehydration) {
135
+
return; // Skip
136
+
}
137
+
```
138
+
139
+
## Configuration
140
+
141
+
- `PLC_ENDPOINT`: DID resolution endpoint (default: `https://plc.wtf`)
142
+
- Can be changed to `https://plc.directory` or custom instance
143
+
- plc.wtf is faster but unofficial
144
+
145
+
## Common Errors
146
+
147
+
### "RepoNotFound"
148
+
- **Cause:** Querying wrong PDS endpoint
149
+
- **Solution:** Resolve correct PDS from DID document
150
+
151
+
### Foreign Key Constraint Violation
152
+
- **Cause:** Trying to insert profile blobs into `blobs` table
153
+
- **Solution:** Use separate `profile_blobs` table
154
+
155
+
### Missing CIDs Despite API Returning Them
156
+
- **Cause:** Trying to access `ref.$link` when ref is a CID object
157
+
- **Solution:** Call `.toString()` on the CID object
158
+
159
+
## Related Files
160
+
161
+
- `src/hydration/profiles.service.ts` - Main hydration logic
162
+
- `src/database/profile-blobs.repository.ts` - Profile blob persistence
163
+
- `src/database/schema.ts` - Table definitions
164
+
- `src/config/index.ts` - PLC endpoint configuration
+25
-41
src/blobs/processor.ts
+25
-41
src/blobs/processor.ts
···
100
100
}
101
101
}
102
102
103
+
private parseBlobUri(uri: string): { did: string; type: 'post' | 'avatar' | 'banner' } {
104
+
if (uri.startsWith("profile://")) {
105
+
const match = uri.match(/^profile:\/\/([^/]+)\/(avatar|banner)$/);
106
+
if (match) {
107
+
return { did: match[1], type: match[2] as 'avatar' | 'banner' };
108
+
}
109
+
}
110
+
111
+
const [, did] = uri.replace("at://", "").split("/");
112
+
return { did, type: 'post' };
113
+
}
114
+
103
115
private async processBlob(
104
116
postUri: string,
105
117
ref: BlobReference
···
113
125
return;
114
126
}
115
127
116
-
const [, did] = postUri.replace("at://", "").split("/");
128
+
const { did, type } = this.parseBlobUri(postUri);
129
+
const pds = `https://${config.bsky.pds}`;
130
+
const blobUrl = `${pds}/xrpc/com.atproto.sync.getBlob?did=${did}&cid=${ref.cid}`;
117
131
118
132
try {
119
-
const response = await fetch(
120
-
`https://cdn.bsky.app/img/feed_thumbnail/plain/${did}/${ref.cid}@jpeg`,
121
-
{ method: "HEAD" }
122
-
);
133
+
const response = await fetch(blobUrl);
123
134
124
135
if (!response.ok) {
125
136
logger.warn(
126
-
{ postUri, cid: ref.cid, status: response.status },
127
-
"Failed to fetch blob metadata"
137
+
{ postUri, cid: ref.cid, status: response.status, did },
138
+
"Failed to fetch blob"
128
139
);
129
140
return;
130
141
}
131
142
132
-
let blobData: Buffer | null = null;
133
-
let storagePath: string | undefined;
143
+
const blobData = Buffer.from(await response.arrayBuffer());
134
144
145
+
let storagePath: string | undefined;
135
146
if (this.storage && config.blobs.hydrateBlobs) {
136
-
const fullResponse = await fetch(
137
-
`https://cdn.bsky.app/img/feed_fullsize/plain/${did}/${ref.cid}@jpeg`
138
-
);
139
-
140
-
if (fullResponse.ok) {
141
-
blobData = Buffer.from(
142
-
await fullResponse.arrayBuffer()
143
-
);
144
-
storagePath = await this.storage.store(
145
-
ref.cid,
146
-
blobData,
147
-
ref.mimeType
148
-
);
149
-
}
150
-
} else {
151
-
const thumbResponse = await fetch(
152
-
`https://cdn.bsky.app/img/feed_thumbnail/plain/${did}/${ref.cid}@jpeg`
147
+
storagePath = await this.storage.store(
148
+
ref.cid,
149
+
blobData,
150
+
ref.mimeType
153
151
);
154
-
155
-
if (thumbResponse.ok) {
156
-
blobData = Buffer.from(
157
-
await thumbResponse.arrayBuffer()
158
-
);
159
-
}
160
-
}
161
-
162
-
if (!blobData) {
163
-
logger.warn(
164
-
{ postUri, cid: ref.cid },
165
-
"Could not fetch blob data"
166
-
);
167
-
return;
168
152
}
169
153
170
154
const hashes = await computeBlobHashes(
···
182
166
});
183
167
184
168
logger.info(
185
-
{ postUri, cid: ref.cid, sha256: hashes.sha256 },
169
+
{ postUri, cid: ref.cid, sha256: hashes.sha256, type },
186
170
"Blob processed successfully"
187
171
);
188
172
} catch (error) {
+6
src/config/index.ts
+6
src/config/index.ts
···
9
9
password: z.string().min(1, "BSKY_PASSWORD is required"),
10
10
pds: z.string().default("bsky.social"),
11
11
}),
12
+
plc: z.object({
13
+
endpoint: z.string().url().default("https://plc.wtf"),
14
+
}),
12
15
labeler: z.object({
13
16
wssUrl: z.string().url("WSS_URL must be a valid URL"),
14
17
}),
···
42
45
handle: process.env.BSKY_HANDLE,
43
46
password: process.env.BSKY_PASSWORD,
44
47
pds: process.env.PDS,
48
+
},
49
+
plc: {
50
+
endpoint: process.env.PLC_ENDPOINT,
45
51
},
46
52
labeler: {
47
53
wssUrl: process.env.WSS_URL,
+123
src/database/profile-blobs.repository.ts
+123
src/database/profile-blobs.repository.ts
···
1
+
import { Database } from "duckdb";
2
+
import { logger } from "../logger/index.js";
3
+
4
+
export interface ProfileBlob {
5
+
did: string;
6
+
blob_type: "avatar" | "banner";
7
+
blob_cid: string;
8
+
sha256: string;
9
+
phash?: string;
10
+
storage_path?: string;
11
+
mimetype?: string;
12
+
captured_at?: Date;
13
+
}
14
+
15
+
export class ProfileBlobsRepository {
16
+
constructor(private db: Database) {}
17
+
18
+
async insert(blob: ProfileBlob): Promise<void> {
19
+
return new Promise((resolve, reject) => {
20
+
this.db.prepare(
21
+
`
22
+
INSERT INTO profile_blobs (did, blob_type, blob_cid, sha256, phash, storage_path, mimetype, captured_at)
23
+
VALUES ($1, $2, $3, $4, $5, $6, $7, COALESCE($8, CURRENT_TIMESTAMP))
24
+
`,
25
+
(err, stmt) => {
26
+
if (err) {
27
+
logger.error({ err }, "Failed to prepare profile blob insert statement");
28
+
reject(err);
29
+
return;
30
+
}
31
+
32
+
stmt.run(
33
+
blob.did,
34
+
blob.blob_type,
35
+
blob.blob_cid,
36
+
blob.sha256,
37
+
blob.phash || null,
38
+
blob.storage_path || null,
39
+
blob.mimetype || null,
40
+
blob.captured_at || null,
41
+
(err) => {
42
+
if (err) {
43
+
logger.error({ err, blob }, "Failed to insert profile blob");
44
+
reject(err);
45
+
return;
46
+
}
47
+
resolve();
48
+
}
49
+
);
50
+
}
51
+
);
52
+
});
53
+
}
54
+
55
+
async findByDid(did: string): Promise<ProfileBlob[]> {
56
+
return new Promise((resolve, reject) => {
57
+
this.db.all(
58
+
`SELECT * FROM profile_blobs WHERE did = $1 ORDER BY captured_at DESC`,
59
+
did,
60
+
(err, rows: ProfileBlob[]) => {
61
+
if (err) {
62
+
logger.error({ err, did }, "Failed to find profile blobs by DID");
63
+
reject(err);
64
+
return;
65
+
}
66
+
resolve(rows || []);
67
+
}
68
+
);
69
+
});
70
+
}
71
+
72
+
async findLatestByDidAndType(did: string, blobType: "avatar" | "banner"): Promise<ProfileBlob | null> {
73
+
return new Promise((resolve, reject) => {
74
+
this.db.all(
75
+
`SELECT * FROM profile_blobs WHERE did = $1 AND blob_type = $2 ORDER BY captured_at DESC LIMIT 1`,
76
+
did,
77
+
blobType,
78
+
(err, rows: ProfileBlob[]) => {
79
+
if (err) {
80
+
logger.error({ err, did, blobType }, "Failed to find latest profile blob");
81
+
reject(err);
82
+
return;
83
+
}
84
+
resolve(rows?.[0] || null);
85
+
}
86
+
);
87
+
});
88
+
}
89
+
90
+
async findBySha256(sha256: string): Promise<ProfileBlob | null> {
91
+
return new Promise((resolve, reject) => {
92
+
this.db.all(
93
+
`SELECT * FROM profile_blobs WHERE sha256 = $1 LIMIT 1`,
94
+
sha256,
95
+
(err, rows: ProfileBlob[]) => {
96
+
if (err) {
97
+
logger.error({ err, sha256 }, "Failed to find profile blob by SHA256");
98
+
reject(err);
99
+
return;
100
+
}
101
+
resolve(rows?.[0] || null);
102
+
}
103
+
);
104
+
});
105
+
}
106
+
107
+
async findByPhash(phash: string): Promise<ProfileBlob[]> {
108
+
return new Promise((resolve, reject) => {
109
+
this.db.all(
110
+
`SELECT * FROM profile_blobs WHERE phash = $1`,
111
+
phash,
112
+
(err, rows: ProfileBlob[]) => {
113
+
if (err) {
114
+
logger.error({ err, phash }, "Failed to find profile blobs by pHash");
115
+
reject(err);
116
+
return;
117
+
}
118
+
resolve(rows || []);
119
+
}
120
+
);
121
+
});
122
+
}
123
+
}
+9
-3
src/database/profiles.repository.ts
+9
-3
src/database/profiles.repository.ts
···
6
6
handle?: string;
7
7
display_name?: string;
8
8
description?: string;
9
+
avatar_cid?: string;
10
+
banner_cid?: string;
9
11
}
10
12
11
13
export class ProfilesRepository {
···
15
17
return new Promise((resolve, reject) => {
16
18
this.db.prepare(
17
19
`
18
-
INSERT INTO profiles (did, handle, display_name, description)
19
-
VALUES ($1, $2, $3, $4)
20
+
INSERT INTO profiles (did, handle, display_name, description, avatar_cid, banner_cid)
21
+
VALUES ($1, $2, $3, $4, $5, $6)
20
22
ON CONFLICT (did) DO UPDATE SET
21
23
handle = EXCLUDED.handle,
22
24
display_name = EXCLUDED.display_name,
23
-
description = EXCLUDED.description
25
+
description = EXCLUDED.description,
26
+
avatar_cid = EXCLUDED.avatar_cid,
27
+
banner_cid = EXCLUDED.banner_cid
24
28
`,
25
29
(err, stmt) => {
26
30
if (err) {
···
34
38
profile.handle || null,
35
39
profile.display_name || null,
36
40
profile.description || null,
41
+
profile.avatar_cid || null,
42
+
profile.banner_cid || null,
37
43
(err) => {
38
44
if (err) {
39
45
logger.error({ err, profile }, "Failed to insert profile");
+73
-3
src/database/schema.ts
+73
-3
src/database/schema.ts
···
34
34
did TEXT PRIMARY KEY,
35
35
handle TEXT,
36
36
display_name TEXT,
37
-
description TEXT
37
+
description TEXT,
38
+
avatar_cid TEXT,
39
+
banner_cid TEXT
38
40
);
39
41
40
42
-- Blobs table: stores information about image blobs found in posts
···
49
51
FOREIGN KEY (post_uri) REFERENCES posts(uri)
50
52
);
51
53
54
+
-- Profile blobs table: stores avatar and banner blobs for profiles
55
+
CREATE TABLE IF NOT EXISTS profile_blobs (
56
+
did TEXT NOT NULL,
57
+
blob_type TEXT NOT NULL CHECK (blob_type IN ('avatar', 'banner')),
58
+
blob_cid TEXT NOT NULL,
59
+
sha256 TEXT NOT NULL,
60
+
phash TEXT,
61
+
storage_path TEXT,
62
+
mimetype TEXT,
63
+
captured_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
64
+
PRIMARY KEY (did, blob_type, captured_at),
65
+
FOREIGN KEY (did) REFERENCES profiles(did)
66
+
);
67
+
52
68
-- Indexes for performance
53
69
CREATE INDEX IF NOT EXISTS idx_labels_uri ON labels(uri);
54
70
CREATE INDEX IF NOT EXISTS idx_labels_val ON labels(val);
···
56
72
CREATE INDEX IF NOT EXISTS idx_posts_did ON posts(did);
57
73
CREATE INDEX IF NOT EXISTS idx_blobs_sha256 ON blobs(sha256);
58
74
CREATE INDEX IF NOT EXISTS idx_blobs_phash ON blobs(phash);
75
+
CREATE INDEX IF NOT EXISTS idx_profile_blobs_sha256 ON profile_blobs(sha256);
76
+
CREATE INDEX IF NOT EXISTS idx_profile_blobs_phash ON profile_blobs(phash);
59
77
`;
60
78
79
+
async function migrateProfilesTable(): Promise<void> {
80
+
const db = getDatabase();
81
+
82
+
return new Promise((resolve, reject) => {
83
+
db.all(
84
+
"SELECT column_name FROM information_schema.columns WHERE table_name = 'profiles'",
85
+
(err, rows: any[]) => {
86
+
if (err) {
87
+
logger.error({ err }, "Failed to check profiles table columns");
88
+
reject(err);
89
+
return;
90
+
}
91
+
92
+
const columnNames = rows.map((row) => row.column_name);
93
+
const hasAvatarCid = columnNames.includes("avatar_cid");
94
+
const hasBannerCid = columnNames.includes("banner_cid");
95
+
96
+
if (!hasAvatarCid || !hasBannerCid) {
97
+
logger.info("Migrating profiles table to add avatar_cid and banner_cid columns");
98
+
99
+
const migrations: string[] = [];
100
+
if (!hasAvatarCid) {
101
+
migrations.push("ALTER TABLE profiles ADD COLUMN avatar_cid TEXT");
102
+
}
103
+
if (!hasBannerCid) {
104
+
migrations.push("ALTER TABLE profiles ADD COLUMN banner_cid TEXT");
105
+
}
106
+
107
+
db.exec(migrations.join("; "), (err) => {
108
+
if (err) {
109
+
logger.error({ err }, "Failed to migrate profiles table");
110
+
reject(err);
111
+
return;
112
+
}
113
+
logger.info("Profiles table migration completed");
114
+
resolve();
115
+
});
116
+
} else {
117
+
logger.debug("Profiles table already has avatar_cid and banner_cid columns");
118
+
resolve();
119
+
}
120
+
}
121
+
);
122
+
});
123
+
}
124
+
61
125
export async function initializeSchema(): Promise<void> {
62
126
const db = getDatabase();
63
127
64
128
return new Promise((resolve, reject) => {
65
-
db.exec(SCHEMA_SQL, (err) => {
129
+
db.exec(SCHEMA_SQL, async (err) => {
66
130
if (err) {
67
131
logger.error({ err }, "Failed to initialize schema");
68
132
reject(err);
69
133
return;
70
134
}
71
135
logger.info("Database schema initialized");
72
-
resolve();
136
+
137
+
try {
138
+
await migrateProfilesTable();
139
+
resolve();
140
+
} catch (migrationErr) {
141
+
reject(migrationErr);
142
+
}
73
143
});
74
144
});
75
145
}
+138
-3
src/hydration/profiles.service.ts
+138
-3
src/hydration/profiles.service.ts
···
1
1
import { AtpAgent } from "@atproto/api";
2
2
import { Database } from "duckdb";
3
3
import { ProfilesRepository } from "../database/profiles.repository.js";
4
+
import { ProfileBlobsRepository } from "../database/profile-blobs.repository.js";
5
+
import { computeBlobHashes } from "../blobs/hasher.js";
6
+
import { LocalBlobStorage } from "../blobs/storage/local.js";
7
+
import { S3BlobStorage } from "../blobs/storage/s3.js";
8
+
import { BlobStorage } from "../blobs/processor.js";
4
9
import { pRateLimit } from "p-ratelimit";
5
10
import { withRetry, isRateLimitError, isNetworkError, isServerError } from "../utils/retry.js";
6
11
import { logger } from "../logger/index.js";
···
9
14
export class ProfileHydrationService {
10
15
private agent: AtpAgent;
11
16
private profilesRepo: ProfilesRepository;
17
+
private profileBlobsRepo: ProfileBlobsRepository;
18
+
private storage: BlobStorage | null = null;
12
19
private limit: ReturnType<typeof pRateLimit>;
13
20
14
21
constructor(db: Database) {
15
22
this.agent = new AtpAgent({ service: `https://${config.bsky.pds}` });
16
23
this.profilesRepo = new ProfilesRepository(db);
24
+
this.profileBlobsRepo = new ProfileBlobsRepository(db);
25
+
26
+
if (config.blobs.hydrateBlobs) {
27
+
if (config.blobs.storage.type === "s3") {
28
+
this.storage = new S3BlobStorage(
29
+
config.blobs.storage.s3Bucket!,
30
+
config.blobs.storage.s3Region!
31
+
);
32
+
} else {
33
+
this.storage = new LocalBlobStorage(
34
+
config.blobs.storage.localPath
35
+
);
36
+
}
37
+
}
38
+
17
39
this.limit = pRateLimit({
18
40
interval: 300000,
19
41
rate: 3000,
···
38
60
async hydrateProfile(did: string): Promise<void> {
39
61
try {
40
62
const existingProfile = await this.profilesRepo.findByDid(did);
41
-
if (existingProfile) {
42
-
logger.debug({ did }, "Profile already hydrated, skipping");
63
+
const needsRehydration = existingProfile && (existingProfile.avatar_cid === null || existingProfile.banner_cid === null);
64
+
65
+
if (existingProfile && !needsRehydration) {
66
+
logger.debug({ did }, "Profile already fully hydrated, skipping");
43
67
return;
68
+
}
69
+
70
+
if (needsRehydration) {
71
+
logger.debug({ did }, "Re-hydrating profile to fetch avatar/banner CIDs");
44
72
}
45
73
46
74
const profileResponse = await this.limit(() =>
···
68
96
69
97
let displayName: string | undefined;
70
98
let description: string | undefined;
99
+
let avatarCid: string | undefined;
100
+
let bannerCid: string | undefined;
71
101
72
102
if (profileResponse.success && profileResponse.data.value) {
73
103
const record = profileResponse.data.value as any;
74
104
displayName = record.displayName;
75
105
description = record.description;
106
+
107
+
if (record.avatar?.ref) {
108
+
avatarCid = record.avatar.ref.toString();
109
+
} else {
110
+
avatarCid = "";
111
+
}
112
+
113
+
if (record.banner?.ref) {
114
+
bannerCid = record.banner.ref.toString();
115
+
} else {
116
+
bannerCid = "";
117
+
}
118
+
119
+
logger.debug({ did, avatarCid, bannerCid, hasAvatar: !!record.avatar, hasBanner: !!record.banner }, "Extracted CIDs from profile record");
76
120
}
77
121
78
122
const profileLookup = await this.limit(() =>
···
104
148
handle,
105
149
display_name: displayName,
106
150
description,
151
+
avatar_cid: avatarCid,
152
+
banner_cid: bannerCid,
107
153
});
108
154
109
-
logger.info({ did, handle }, "Profile hydrated successfully");
155
+
if (avatarCid && avatarCid !== "") {
156
+
try {
157
+
await this.processProfileBlob(did, avatarCid, "avatar");
158
+
} catch (error) {
159
+
logger.warn({ error, did, avatarCid }, "Failed to process avatar blob");
160
+
}
161
+
}
162
+
163
+
if (bannerCid && bannerCid !== "") {
164
+
try {
165
+
await this.processProfileBlob(did, bannerCid, "banner");
166
+
} catch (error) {
167
+
logger.warn({ error, did, bannerCid }, "Failed to process banner blob");
168
+
}
169
+
}
170
+
171
+
logger.info({ did, handle, avatarCid, bannerCid }, "Profile hydrated successfully");
110
172
} catch (error) {
111
173
logger.error({ error, did }, "Failed to hydrate profile");
112
174
throw error;
113
175
}
176
+
}
177
+
178
+
private async resolvePds(did: string): Promise<string | null> {
179
+
try {
180
+
const didDocResponse = await fetch(`${config.plc.endpoint}/${did}`);
181
+
if (!didDocResponse.ok) {
182
+
logger.warn({ did, status: didDocResponse.status }, "Failed to fetch DID document");
183
+
return null;
184
+
}
185
+
186
+
const didDoc = await didDocResponse.json();
187
+
const pdsService = didDoc.service?.find((s: any) =>
188
+
s.id === "#atproto_pds" && s.type === "AtprotoPersonalDataServer"
189
+
);
190
+
191
+
if (!pdsService?.serviceEndpoint) {
192
+
logger.warn({ did }, "No PDS endpoint found in DID document");
193
+
return null;
194
+
}
195
+
196
+
return pdsService.serviceEndpoint;
197
+
} catch (error) {
198
+
logger.error({ error, did }, "Failed to resolve PDS from DID");
199
+
return null;
200
+
}
201
+
}
202
+
203
+
private async processProfileBlob(
204
+
did: string,
205
+
cid: string,
206
+
type: "avatar" | "banner"
207
+
): Promise<void> {
208
+
const latestBlob = await this.profileBlobsRepo.findLatestByDidAndType(did, type);
209
+
210
+
if (latestBlob && latestBlob.blob_cid === cid) {
211
+
logger.debug({ did, cid, type }, "Latest blob already has same CID, skipping");
212
+
return;
213
+
}
214
+
215
+
const pdsEndpoint = await this.resolvePds(did);
216
+
if (!pdsEndpoint) {
217
+
logger.warn({ did, cid, type }, "Cannot fetch blob without PDS endpoint");
218
+
return;
219
+
}
220
+
221
+
const blobUrl = `${pdsEndpoint}/xrpc/com.atproto.sync.getBlob?did=${did}&cid=${cid}`;
222
+
const blobResponse = await fetch(blobUrl);
223
+
224
+
if (!blobResponse.ok) {
225
+
logger.warn({ did, cid, type, pdsEndpoint, status: blobResponse.status }, "Failed to fetch blob from PDS");
226
+
return;
227
+
}
228
+
229
+
const blobData = Buffer.from(await blobResponse.arrayBuffer());
230
+
231
+
let storagePath: string | undefined;
232
+
if (this.storage && config.blobs.hydrateBlobs) {
233
+
storagePath = await this.storage.store(cid, blobData, "image/jpeg");
234
+
}
235
+
236
+
const hashes = await computeBlobHashes(blobData, "image/jpeg");
237
+
238
+
await this.profileBlobsRepo.insert({
239
+
did,
240
+
blob_type: type,
241
+
blob_cid: cid,
242
+
sha256: hashes.sha256,
243
+
phash: hashes.phash,
244
+
storage_path: storagePath,
245
+
mimetype: "image/jpeg",
246
+
});
247
+
248
+
logger.info({ did, cid, type, sha256: hashes.sha256, pdsEndpoint, storagePath }, "Profile blob processed successfully");
114
249
}
115
250
}
+21
-1
tests/integration/database.test.ts
+21
-1
tests/integration/database.test.ts
···
48
48
did TEXT PRIMARY KEY,
49
49
handle TEXT,
50
50
display_name TEXT,
51
-
description TEXT
51
+
description TEXT,
52
+
avatar_cid TEXT,
53
+
banner_cid TEXT
52
54
);
53
55
54
56
CREATE TABLE IF NOT EXISTS blobs (
···
145
147
const found = await profilesRepo.findByHandle("testuser.bsky.social");
146
148
expect(found).not.toBeNull();
147
149
expect(found?.did).toBe("did:plc:testuser");
150
+
});
151
+
152
+
test("should insert and retrieve profile with avatar and banner", async () => {
153
+
const profile = {
154
+
did: "did:plc:testuser2",
155
+
handle: "testuser2.bsky.social",
156
+
display_name: "Test User 2",
157
+
description: "A test user with avatar",
158
+
avatar_cid: "bafyavatartest",
159
+
banner_cid: "bafybannertest",
160
+
};
161
+
162
+
await profilesRepo.insert(profile);
163
+
const found = await profilesRepo.findByDid(profile.did);
164
+
165
+
expect(found).not.toBeNull();
166
+
expect(found?.avatar_cid).toBe("bafyavatartest");
167
+
expect(found?.banner_cid).toBe("bafybannertest");
148
168
});
149
169
});
150
170