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2023-04-18
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export type Mode = 'text' | 'binary'
export type MessageName =
| 'parseComplete'
| 'bindComplete'
| 'closeComplete'
| 'noData'
| 'portalSuspended'
| 'replicationStart'
| 'emptyQuery'
| 'copyDone'
| 'copyData'
| 'rowDescription'
| 'parameterDescription'
| 'parameterStatus'
| 'backendKeyData'
| 'notification'
| 'readyForQuery'
| 'commandComplete'
| 'dataRow'
| 'copyInResponse'
| 'copyOutResponse'
| 'authenticationOk'
| 'authenticationMD5Password'
| 'authenticationCleartextPassword'
| 'authenticationSASL'
| 'authenticationSASLContinue'
| 'authenticationSASLFinal'
| 'error'
| 'notice'
export interface BackendMessage {
name: MessageName
length: number
}
export const parseComplete: BackendMessage = {
name: 'parseComplete',
length: 5,
}
export const bindComplete: BackendMessage = {
name: 'bindComplete',
length: 5,
}
export const closeComplete: BackendMessage = {
name: 'closeComplete',
length: 5,
}
export const noData: BackendMessage = {
name: 'noData',
length: 5,
}
export const portalSuspended: BackendMessage = {
name: 'portalSuspended',
length: 5,
}
export const replicationStart: BackendMessage = {
name: 'replicationStart',
length: 4,
}
export const emptyQuery: BackendMessage = {
name: 'emptyQuery',
length: 4,
}
export const copyDone: BackendMessage = {
name: 'copyDone',
length: 4,
}
interface NoticeOrError {
message: string | undefined
severity: string | undefined
code: string | undefined
detail: string | undefined
hint: string | undefined
position: string | undefined
internalPosition: string | undefined
internalQuery: string | undefined
where: string | undefined
schema: string | undefined
table: string | undefined
column: string | undefined
dataType: string | undefined
constraint: string | undefined
file: string | undefined
line: string | undefined
routine: string | undefined
}
export class DatabaseError extends Error implements NoticeOrError {
public severity: string | undefined
public code: string | undefined
public detail: string | undefined
public hint: string | undefined
public position: string | undefined
public internalPosition: string | undefined
public internalQuery: string | undefined
public where: string | undefined
public schema: string | undefined
public table: string | undefined
public column: string | undefined
public dataType: string | undefined
public constraint: string | undefined
public file: string | undefined
public line: string | undefined
public routine: string | undefined
constructor(message: string, public readonly length: number, public readonly name: MessageName) {
super(message)
}
}
export class CopyDataMessage {
public readonly name = 'copyData'
constructor(public readonly length: number, public readonly chunk: Buffer) {}
}
export class CopyResponse {
public readonly columnTypes: number[]
constructor(
public readonly length: number,
public readonly name: MessageName,
public readonly binary: boolean,
columnCount: number
) {
this.columnTypes = new Array(columnCount)
}
}
export class Field {
constructor(
public readonly name: string,
public readonly tableID: number,
public readonly columnID: number,
public readonly dataTypeID: number,
public readonly dataTypeSize: number,
public readonly dataTypeModifier: number,
public readonly format: Mode
) {}
}
export class RowDescriptionMessage {
public readonly name: MessageName = 'rowDescription'
public readonly fields: Field[]
constructor(public readonly length: number, public readonly fieldCount: number) {
this.fields = new Array(this.fieldCount)
}
}
export class ParameterDescriptionMessage {
public readonly name: MessageName = 'parameterDescription'
public readonly dataTypeIDs: number[]
constructor(public readonly length: number, public readonly parameterCount: number) {
this.dataTypeIDs = new Array(this.parameterCount)
}
}
export class ParameterStatusMessage {
public readonly name: MessageName = 'parameterStatus'
constructor(
public readonly length: number,
public readonly parameterName: string,
public readonly parameterValue: string
) {}
}
export class AuthenticationMD5Password implements BackendMessage {
public readonly name: MessageName = 'authenticationMD5Password'
constructor(public readonly length: number, public readonly salt: Buffer) {}
}
export class BackendKeyDataMessage {
public readonly name: MessageName = 'backendKeyData'
constructor(public readonly length: number, public readonly processID: number, public readonly secretKey: number) {}
}
export class NotificationResponseMessage {
public readonly name: MessageName = 'notification'
constructor(
public readonly length: number,
public readonly processId: number,
public readonly channel: string,
public readonly payload: string
) {}
}
export class ReadyForQueryMessage {
public readonly name: MessageName = 'readyForQuery'
constructor(public readonly length: number, public readonly status: string) {}
}
export class CommandCompleteMessage {
public readonly name: MessageName = 'commandComplete'
constructor(public readonly length: number, public readonly text: string) {}
}
export class DataRowMessage {
public readonly fieldCount: number
public readonly name: MessageName = 'dataRow'
constructor(public length: number, public fields: any[]) {
this.fieldCount = fields.length
}
}
export class NoticeMessage implements BackendMessage, NoticeOrError {
constructor(public readonly length: number, public readonly message: string | undefined) {}
public readonly name = 'notice'
public severity: string | undefined
public code: string | undefined
public detail: string | undefined
public hint: string | undefined
public position: string | undefined
public internalPosition: string | undefined
public internalQuery: string | undefined
public where: string | undefined
public schema: string | undefined
public table: string | undefined
public column: string | undefined
public dataType: string | undefined
public constraint: string | undefined
public file: string | undefined
public line: string | undefined
public routine: string | undefined
}