JsonFileDataAdapter

Cache database using JSON file

Implements

• ImgProcDataAdapter

Constructors

new JsonFileDataAdapter()

new JsonFileDataAdapter(options?): JsonFileDataAdapter

Parameters

• options?: JsonFileDataAdapterOptions

Returns

JsonFileDataAdapter

Defined in

src/extras/JsonFileDataAdapter.ts:53

Properties

dbDir

dbDir: string

Defined in

src/extras/JsonFileDataAdapter.ts:39

---

dbFile

dbFile: string

Defined in

src/extras/JsonFileDataAdapter.ts:38

---

dbPath

dbPath: string = ":memory:"

Defined in

src/extras/JsonFileDataAdapter.ts:45

---

debounce

debounce: number

Defined in

src/extras/JsonFileDataAdapter.ts:41

---

files

files: ImgProcFileRecord[] = []

Defined in

src/extras/JsonFileDataAdapter.ts:47

---

isInMemory

isInMemory: boolean

Defined in

src/extras/JsonFileDataAdapter.ts:40

---

retentionCount

retentionCount: null | number

Defined in

src/extras/JsonFileDataAdapter.ts:44

---

retentionPeriod

retentionPeriod: null | number = 10

Defined in

src/extras/JsonFileDataAdapter.ts:43

Methods

close()

close(): void

Close database

Returns

void

Implementation of

ImgProcDataAdapter.close

Defined in

src/extras/JsonFileDataAdapter.ts:223

---

countdown()

countdown(): void

Countdown all records

Returns

void

Implementation of

ImgProcDataAdapter.countdown

Defined in

src/extras/JsonFileDataAdapter.ts:184

---

delete()

delete(criteria): void

Delete the record

Parameters

• criteria: ImgProcDataAdapterCriteria

Returns

void

Implementation of

ImgProcDataAdapter.delete

Defined in

src/extras/JsonFileDataAdapter.ts:152

---

deleteExpiredRecords()

deleteExpiredRecords(now): null | Set<string>

Delete expired records

Parameters

• now: number = ...

Unixtime (milliseconds)

Returns

null | Set<string>

Deleted hashes or null

Implementation of

ImgProcDataAdapter.deleteExpiredRecords

Defined in

src/extras/JsonFileDataAdapter.ts:197

---

fetch()

fetch(criteria): null | ImgProcFileRecord

Fetch single record

• To fetch a record with category source, specify hash.
• To fetch a record with category variant or placeholder, specify source and profile.

Parameters

• criteria: ImgProcDataAdapterCriteria

Returns

null | ImgProcFileRecord

Implementation of

ImgProcDataAdapter.fetch

Defined in

src/extras/JsonFileDataAdapter.ts:108

---

initialize()

initialize(options): void

Initialize database

Parameters

• options: ImgProcDataAdapterInitOptions

Returns

void

Implementation of

ImgProcDataAdapter.initialize

Defined in

src/extras/JsonFileDataAdapter.ts:66

---

insert()

insert(data): void

Insert the record

Parameters

• data: ImgProcFile

Returns

void

Implementation of

ImgProcDataAdapter.insert

Defined in

src/extras/JsonFileDataAdapter.ts:122

---

list()

list(): Set<string>

List all hashes

Returns

Set<string>

Implementation of

ImgProcDataAdapter.list

Defined in

src/extras/JsonFileDataAdapter.ts:118

---

renew()

renew(criteria): void

Renew the record

Parameters

• criteria: ImgProcDataAdapterCriteria

Returns

void

Implementation of

ImgProcDataAdapter.renew

Defined in

src/extras/JsonFileDataAdapter.ts:164

---

updateMetadata()

updateMetadata(data): void

Update the record for remote file

Parameters

• data

• data.b?: number

• data.expiresAt?: number

• data.format: string

• data.g?: number

• data.hash: string

• data.height: number

• data.r?: number

• data.width: number

Returns

void

Implementation of

ImgProcDataAdapter.updateMetadata

Defined in

src/extras/JsonFileDataAdapter.ts:132