A lot of changes
This commit is contained in:
Fabian Stamm
parent
d8c55d4389
commit
3fa209c0cf
@ -1,6 +1,6 @@
|
||||
{
|
||||
"name": "@hibas123/realtimedb",
|
||||
"version": "2.0.0-beta.1",
|
||||
"version": "2.0.0-beta.2",
|
||||
"description": "",
|
||||
"main": "lib/index.js",
|
||||
"private": true,
|
||||
|
||||
@ -2,7 +2,7 @@ import * as WebSocket from "ws";
|
||||
import { Server, IncomingMessage } from "http";
|
||||
import { DatabaseManager } from "./database/database";
|
||||
import Logging from "@hibas123/logging";
|
||||
import Query from "./database/query";
|
||||
import { Query, CollectionQuery, DocumentQuery } from "./database/query";
|
||||
import Session from "./database/session";
|
||||
import nanoid = require("nanoid");
|
||||
|
||||
@ -100,100 +100,40 @@ export class ConnectionManager {
|
||||
const handler = new Map<string, ((data: any) => void)>();
|
||||
type QueryData = { id: string, type: QueryTypes, path: string[], data: any, options: any };
|
||||
|
||||
const queryHandler = new Map<string, (query: Query, permissions: { read: boolean, write: boolean }, data?: any) => Promise<any>>();
|
||||
|
||||
const noperm = new Error("No permisison!");
|
||||
|
||||
if (session.root) {
|
||||
queryHandler.set("collections", (query, perm, data) => {
|
||||
return query.getCollections();
|
||||
})
|
||||
|
||||
queryHandler.set("delete-collection", (query, perm, data) => {
|
||||
return query.deleteCollection();
|
||||
})
|
||||
}
|
||||
|
||||
queryHandler.set("keys", (query, perm, data) => {
|
||||
if (!perm.read)
|
||||
throw noperm;
|
||||
return query.keys();
|
||||
})
|
||||
|
||||
queryHandler.set("get", (query, perm, data) => {
|
||||
if (!perm.read)
|
||||
throw noperm;
|
||||
return query.get();
|
||||
})
|
||||
|
||||
queryHandler.set("set", (query, perm, data) => {
|
||||
if (!perm.write)
|
||||
throw noperm;
|
||||
return query.set(data, {});
|
||||
})
|
||||
|
||||
queryHandler.set("update", (query, perm, data) => {
|
||||
if (!perm.write)
|
||||
throw noperm;
|
||||
return query.update(data);
|
||||
})
|
||||
|
||||
queryHandler.set("push", (query, perm, data) => {
|
||||
if (!perm.write)
|
||||
throw noperm;
|
||||
return query.push(data);
|
||||
})
|
||||
|
||||
queryHandler.set("delete", (query, perm, data) => {
|
||||
if (!perm.write)
|
||||
throw noperm;
|
||||
return query.delete();
|
||||
})
|
||||
|
||||
queryHandler.set("subscribe", async (query, perm, data) => {
|
||||
if (!perm.read)
|
||||
throw noperm;
|
||||
|
||||
let subscriptionID = nanoid();
|
||||
|
||||
query.subscribe((data) => {
|
||||
socket.send(JSON.stringify({ ns: "event", data: { id: subscriptionID, data } }));
|
||||
}, data.types, data.options);
|
||||
|
||||
return StoreQuery(subscriptionID);
|
||||
})
|
||||
|
||||
queryHandler.set("unsubscribe", async (query, perm, data) => {
|
||||
query.unsubscribe();
|
||||
return DeleteQuery(true);
|
||||
})
|
||||
|
||||
handler.set("query", async ({ id, type, path, data }: QueryData) => {
|
||||
//TODO: Handle case with no id, type, path
|
||||
Logging.debug(`Request with id '${id}' from type '${type}' and path '${path}' with data`, data)
|
||||
Logging.debug(`Request with id '${id}' from type '${type}' and path '${path.join("/")}' with data`, data)
|
||||
|
||||
try {
|
||||
if (!db)
|
||||
throw new Error("Database not found!");
|
||||
else {
|
||||
let handler = queryHandler.get(type);
|
||||
if (!handler) {
|
||||
let isDoc = path.length % 2 === 0;
|
||||
let handler = isDoc ? documentHandler.get(type) : collectionHandler.get(type);
|
||||
|
||||
if (!handler && session.root)
|
||||
handler = rootHandler.get(type);
|
||||
|
||||
if (!handler)
|
||||
throw new Error("Invalid Request!");
|
||||
} else {
|
||||
const query = stored.get(id) || db.getQuery(path || [], session.sessionid);
|
||||
const perms = db.rules.hasPermission(path, session);
|
||||
|
||||
let res = await handler(query, perms, data);
|
||||
if (res && typeof res === "object" && res[StoreSym] !== undefined) {
|
||||
if (res[StoreSym])
|
||||
stored.set(id, query);
|
||||
else
|
||||
stored.delete(id);
|
||||
let query = db.getQuery(path || [], session.sessionid, isDoc ? "document" : "collection");
|
||||
let res = await handler({
|
||||
id,
|
||||
data,
|
||||
socket,
|
||||
query: query as any // We know it is the right one
|
||||
})
|
||||
|
||||
res = res.result;
|
||||
}
|
||||
answer(id, res);
|
||||
if (res && typeof res === "object" && res[StoreSym] !== undefined) {
|
||||
if (res[StoreSym])
|
||||
stored.set(id, query);
|
||||
else
|
||||
stored.delete(id);
|
||||
|
||||
res = res.result;
|
||||
}
|
||||
answer(id, res);
|
||||
}
|
||||
} catch (err) {
|
||||
// Logging.error(err);
|
||||
@ -215,10 +155,103 @@ export class ConnectionManager {
|
||||
}
|
||||
})
|
||||
|
||||
socket.on("disconnect", () => {
|
||||
stored.forEach(query => query.unsubscribe());
|
||||
socket.on("close", () => {
|
||||
Logging.log(`${session.sessionid} has disconnected!`);
|
||||
Logging.debug("Clearing stored:", stored);
|
||||
stored.forEach(query => (query as DocumentQuery | CollectionQuery).unsubscribe());
|
||||
stored.clear();
|
||||
socket.removeAllListeners();
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
type QueryHandler<T extends Query> = (api: {
|
||||
id: string;
|
||||
query: T;
|
||||
// storedQuery(id: string): T | undefined;
|
||||
socket: WebSocket;
|
||||
data: any;
|
||||
}) => any;
|
||||
|
||||
const NoPermissionError = new Error("No permisison!");
|
||||
|
||||
const rootHandler = new Map<string, QueryHandler<Query>>();
|
||||
rootHandler.set("collections", ({ query }) => {
|
||||
return CollectionQuery.fromQuery(query).collections();
|
||||
})
|
||||
|
||||
rootHandler.set("delete-collection", ({ query }) => {
|
||||
return CollectionQuery.fromQuery(query).deleteCollection();
|
||||
})
|
||||
|
||||
|
||||
const documentHandler = new Map<string, QueryHandler<DocumentQuery>>();
|
||||
documentHandler.set("get", ({ query }) => {
|
||||
return query.get();
|
||||
})
|
||||
|
||||
documentHandler.set("set", ({ query, data }) => {
|
||||
return query.set(data, {});
|
||||
})
|
||||
|
||||
documentHandler.set("update", ({ query, data }) => {
|
||||
return query.update(data);
|
||||
})
|
||||
|
||||
documentHandler.set("delete", ({ query }) => {
|
||||
return query.delete();
|
||||
})
|
||||
|
||||
documentHandler.set("snapshot", async ({ query, data, id, socket }) => {
|
||||
let res = await query.snapshot((data) => {
|
||||
socket.send(JSON.stringify({
|
||||
ns: "snapshot", data: { id, data }
|
||||
}));
|
||||
});
|
||||
|
||||
return StoreQuery(res);
|
||||
})
|
||||
|
||||
documentHandler.set("unsubscribe", async ({ query }) => {
|
||||
query.unsubscribe();
|
||||
return DeleteQuery(true);
|
||||
})
|
||||
|
||||
|
||||
const collectionHandler = new Map<string, QueryHandler<CollectionQuery>>();
|
||||
collectionHandler.set("keys", ({ query }) => {
|
||||
return query.keys();
|
||||
})
|
||||
|
||||
|
||||
collectionHandler.set("add", ({ query, data }) => {
|
||||
return query.add(data);
|
||||
})
|
||||
|
||||
collectionHandler.set("get", ({ query, data }) => {
|
||||
if (data.where)
|
||||
query.where = data.where;
|
||||
if (data.limit)
|
||||
query.limit = data.limit;
|
||||
return query.get();
|
||||
})
|
||||
|
||||
collectionHandler.set("snapshot", async ({ query, id, socket, data }) => {
|
||||
if (data.where)
|
||||
query.where = data.where;
|
||||
if (data.limit)
|
||||
query.limit = data.limit;
|
||||
|
||||
let res = await query.snapshot((data) => {
|
||||
socket.send(JSON.stringify({
|
||||
ns: "snapshot", data: { id, data }
|
||||
}));
|
||||
});
|
||||
|
||||
return StoreQuery(res);
|
||||
})
|
||||
|
||||
collectionHandler.set("unsubscribe", async ({ query }) => {
|
||||
query.unsubscribe();
|
||||
return DeleteQuery(true);
|
||||
})
|
||||
@ -2,7 +2,7 @@ import { Rules } from "./rules";
|
||||
import Settings from "../settings";
|
||||
import getLevelDB, { LevelDB, deleteLevelDB } from "../storage";
|
||||
import DocumentLock from "./lock";
|
||||
import Query from "./query";
|
||||
import { DocumentQuery, CollectionQuery, Query } from "./query";
|
||||
|
||||
export class DatabaseManager {
|
||||
static databases = new Map<string, Database>();
|
||||
@ -104,8 +104,13 @@ export class Database {
|
||||
}
|
||||
|
||||
|
||||
getQuery(path: string[], sender: string) {
|
||||
return new Query(this, path, sender);
|
||||
getQuery(path: string[], sender: string, type: "document" | "collection" | "any") {
|
||||
if (type === "document")
|
||||
return new DocumentQuery(this, path, sender);
|
||||
else if (type === "collection")
|
||||
return new CollectionQuery(this, path, sender);
|
||||
else
|
||||
return new Query(this, path, sender);
|
||||
}
|
||||
|
||||
async stop() {
|
||||
|
||||
@ -19,7 +19,7 @@ export default class DocumentLock {
|
||||
|
||||
return () => {
|
||||
if (l.length > 0)
|
||||
setImmediate(() => l.shift());
|
||||
setImmediate(() => l.shift()());
|
||||
else
|
||||
this.locks.delete(key)
|
||||
}
|
||||
|
||||
@ -14,7 +14,7 @@ interface ISubscribeOptions {
|
||||
existing: boolean;
|
||||
}
|
||||
|
||||
export default class Query {
|
||||
export class Query {
|
||||
/**
|
||||
* Returns true if the path only contains valid characters and false if it doesn't
|
||||
* @param path Path to be checked
|
||||
@ -23,19 +23,17 @@ export default class Query {
|
||||
return path.every(e => (e.match(/[^a-zA-Z0-9_\-\<\>]/g) || []).length === 0);
|
||||
}
|
||||
|
||||
constructor(private database: Database, private path: string[], private sender: string) {
|
||||
constructor(protected database: Database, protected path: string[], protected sender: string) {
|
||||
if (path.length > 10) {
|
||||
throw new Error("Path is to long. Path is only allowed to be 10 Layers deep!");
|
||||
}
|
||||
if (!this.validatePath(path)) {
|
||||
throw new Error("Path can only contain a-z A-Z 0-9 '-' '-' '<' and '>' ");
|
||||
}
|
||||
|
||||
this.onChange = this.onChange.bind(this);
|
||||
}
|
||||
|
||||
|
||||
private async resolve(path: string[], create = false): Promise<{ collection: string, document: string, collectionKey: string }> {
|
||||
protected async resolve(path: string[], create = false): Promise<{ collection: string, document: string, collectionKey: string }> {
|
||||
path = [...path]; // Create modifiable copy
|
||||
let collectionID: string = undefined;
|
||||
let documentKey = path.length % 2 === 0 ? path.pop() : undefined;
|
||||
@ -60,15 +58,17 @@ export default class Query {
|
||||
};
|
||||
}
|
||||
|
||||
private getKey(collection: string, document?: string) {
|
||||
protected getKey(collection: string, document?: string) {
|
||||
return `${collection || ""}/${document || ""}`;
|
||||
}
|
||||
|
||||
private getDoc(collection: string, document: string) {
|
||||
return this.database.data.get(this.getKey(collection, document), { asBuffer: true }).then(res => decode(res as Buffer)).catch(resNull);
|
||||
protected getDoc(collection: string, document: string) {
|
||||
return this.database.data
|
||||
.get(this.getKey(collection, document), { asBuffer: true })
|
||||
.then(res => decode<any>(res as Buffer)).catch(resNull);
|
||||
}
|
||||
|
||||
private sendChange(collection: string, document: string, type: ChangeTypes, data: any) {
|
||||
protected sendChange(collection: string, document: string, type: ChangeTypes, data: any) {
|
||||
let change: Change = {
|
||||
type,
|
||||
document,
|
||||
@ -77,6 +77,7 @@ export default class Query {
|
||||
}
|
||||
|
||||
let s = this.database.changes.get(this.getKey(collection, document))
|
||||
|
||||
if (s)
|
||||
s.forEach(e => setImmediate(() => e(change)))
|
||||
s = this.database.changes.get(this.getKey(collection))
|
||||
@ -85,46 +86,31 @@ export default class Query {
|
||||
|
||||
}
|
||||
|
||||
protected static getConstructorParams(query: Query): [Database, string[], string] {
|
||||
return [query.database, query.path, query.sender];
|
||||
}
|
||||
}
|
||||
|
||||
interface UpdateData {
|
||||
[path: string]: {
|
||||
type: "value" | "timestamp" | "increment" | "push";
|
||||
value: any;
|
||||
}
|
||||
}
|
||||
export class DocumentQuery extends Query {
|
||||
constructor(database: Database, path: string[], sender: string) {
|
||||
super(database, path, sender);
|
||||
this.onChange = this.onChange.bind(this);
|
||||
}
|
||||
|
||||
public async get() {
|
||||
let { collection, document } = await this.resolve(this.path);
|
||||
|
||||
if (!collection || !document) {
|
||||
return null;
|
||||
}
|
||||
const lock = await this.database.locks.lock(collection, document);
|
||||
return this.getDoc(collection, document).finally(() => lock())
|
||||
}
|
||||
|
||||
public async keys() {
|
||||
let { collection, document } = await this.resolve(this.path);
|
||||
if (document)
|
||||
throw new Error("Keys only works on collections!");
|
||||
if (!collection)
|
||||
throw new Error("There must be a collection");
|
||||
|
||||
|
||||
let gt = Buffer.from(this.getKey(collection) + " ");
|
||||
gt[gt.length - 1] = 0;
|
||||
|
||||
let lt = Buffer.alloc(gt.length);
|
||||
lt.set(gt);
|
||||
lt[gt.length - 1] = 0xFF;
|
||||
|
||||
return new Promise<string[]>((yes, no) => {
|
||||
let keys = [];
|
||||
const stream = this.database.data.createKeyStream({
|
||||
gt,
|
||||
lt,
|
||||
keyAsBuffer: false
|
||||
})
|
||||
stream.on("data", (key: string) => {
|
||||
let s = key.split("/", 2);
|
||||
if (s.length > 1)
|
||||
keys.push(s[1]);
|
||||
});
|
||||
stream.on("end", () => yes(keys));
|
||||
stream.on("error", no);
|
||||
});
|
||||
return this.getDoc(collection, document)
|
||||
}
|
||||
|
||||
public async set(data: any, { merge = false }) {
|
||||
@ -149,11 +135,79 @@ export default class Query {
|
||||
.finally(() => lock())
|
||||
}
|
||||
|
||||
public async push(value: any) {
|
||||
let id = nanoid(ALPHABET, 32);
|
||||
let q = new Query(this.database, [...this.path, id], this.sender);
|
||||
await q.set(value, {});
|
||||
return id;
|
||||
public async update(updateData: UpdateData) {
|
||||
let { collection, document } = await this.resolve(this.path, true);
|
||||
if (!collection) {
|
||||
throw new Error("There must be a collection!")
|
||||
}
|
||||
|
||||
if (!document) {
|
||||
throw new Error("There must be a document key!")
|
||||
}
|
||||
|
||||
// Logging.debug(updateData);
|
||||
|
||||
const lock = await this.database.locks.lock(collection, document);
|
||||
try {
|
||||
let data = await this.getDoc(collection, document);
|
||||
let isNew = false
|
||||
if (!data) {
|
||||
isNew = true;
|
||||
data = {};
|
||||
}
|
||||
|
||||
for (let path in updateData) {
|
||||
const toUpdate = updateData[path];
|
||||
let d = data;
|
||||
let parts = path.split(".");
|
||||
while (parts.length > 1) {
|
||||
let seg = parts.shift();
|
||||
if (!data[seg])
|
||||
data[seg] = {}
|
||||
d = data[seg];
|
||||
}
|
||||
|
||||
const last = parts[0];
|
||||
|
||||
// Logging.debug(parts, last, d)
|
||||
|
||||
switch (toUpdate.type) {
|
||||
case "value":
|
||||
d[last] = toUpdate.value;
|
||||
break;
|
||||
case "increment":
|
||||
if (d[last] === undefined || d[last] === null)
|
||||
d[last] = toUpdate.value;
|
||||
else if (typeof d[last] !== "number") {
|
||||
throw new Error("Field is no number!");
|
||||
} else {
|
||||
d[last] += toUpdate.value;
|
||||
}
|
||||
break;
|
||||
case "timestamp":
|
||||
d[last] = new Date().valueOf();
|
||||
break;
|
||||
case "push":
|
||||
if (d[last] === undefined || d[last] === null)
|
||||
d[last] = [toUpdate.value];
|
||||
else if (Array.isArray(d[last])) {
|
||||
d[last].push(toUpdate.value);
|
||||
} else {
|
||||
throw new Error("Field is not array!");
|
||||
}
|
||||
break;
|
||||
default:
|
||||
throw new Error("Invalid update type: " + toUpdate.type);
|
||||
}
|
||||
}
|
||||
|
||||
this.database.data
|
||||
.put(this.getKey(collection, document), encode(data))
|
||||
.then(() => this.sendChange(collection, document, isNew ? "added" : "modified", data))
|
||||
} finally {
|
||||
lock();
|
||||
}
|
||||
//TODO: Implement
|
||||
}
|
||||
|
||||
public async delete() {
|
||||
@ -167,7 +221,6 @@ export default class Query {
|
||||
throw new Error("There must be a document key!")
|
||||
}
|
||||
|
||||
|
||||
const lock = await this.database.locks.lock(collection, document);
|
||||
|
||||
return await this.database.data
|
||||
@ -176,11 +229,294 @@ export default class Query {
|
||||
.finally(() => lock())
|
||||
}
|
||||
|
||||
public async update(data: any) {
|
||||
//TODO: Implement
|
||||
|
||||
|
||||
private subscription: {
|
||||
key: string,
|
||||
onChange: (change: DocRes & { type: ChangeTypes }) => void
|
||||
};
|
||||
|
||||
async snapshot(onChange: (change: DocRes & { type: ChangeTypes }) => void) {
|
||||
if (this.subscription)
|
||||
throw new Error("This query is already subscribed!");
|
||||
let { collection, document } = await this.resolve(this.path);
|
||||
|
||||
let data = await this.getDoc(collection, document);
|
||||
let key = this.getKey(collection, document);
|
||||
this.subscription = {
|
||||
key,
|
||||
onChange
|
||||
}
|
||||
let s = this.database.changes.get(key);
|
||||
if (!s) {
|
||||
s = new Set();
|
||||
this.database.changes.set(key, s);
|
||||
}
|
||||
|
||||
s.add(this.onChange);
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
public async getCollections() {
|
||||
onChange(change: Change) {
|
||||
// if(change.sender === this.sender)
|
||||
// return
|
||||
this.subscription.onChange({
|
||||
id: change.document,
|
||||
data: change.data,
|
||||
type: change.type
|
||||
})
|
||||
}
|
||||
|
||||
unsubscribe() {
|
||||
if (!this.subscription)
|
||||
return;
|
||||
let s = this.database.changes.get(this.subscription.key);
|
||||
s.delete(this.onChange);
|
||||
if (s.size <= 0)
|
||||
this.database.changes.delete(this.subscription.key);
|
||||
|
||||
this.subscription = undefined;
|
||||
}
|
||||
|
||||
public static fromQuery(query: Query) {
|
||||
return new DocumentQuery(...Query.getConstructorParams(query));
|
||||
}
|
||||
}
|
||||
|
||||
type FieldPath = string;
|
||||
type WhereFilterOp =
|
||||
| '<'
|
||||
| '<='
|
||||
| '=='
|
||||
| '>='
|
||||
| '>'
|
||||
| 'array-contains'
|
||||
| 'in'
|
||||
| 'array-contains-any';
|
||||
|
||||
interface IQueryWhere {
|
||||
fieldPath: FieldPath,
|
||||
opStr: WhereFilterOp,
|
||||
value: any
|
||||
}
|
||||
|
||||
|
||||
interface DocRes {
|
||||
id: string;
|
||||
data: any;
|
||||
}
|
||||
|
||||
export class CollectionQuery extends Query {
|
||||
constructor(database: Database, path: string[], sender: string) {
|
||||
super(database, path, sender);
|
||||
this.onChange = this.onChange.bind(this);
|
||||
}
|
||||
|
||||
|
||||
public where: IQueryWhere[] = [];
|
||||
public limit: number = -1;
|
||||
|
||||
public async add(value: any) {
|
||||
let id = nanoid(ALPHABET, 32);
|
||||
let q = new DocumentQuery(this.database, [...this.path, id], this.sender);
|
||||
await q.set(value, {});
|
||||
return id;
|
||||
}
|
||||
|
||||
private getStreamOptions(collection: string) {
|
||||
let gt = Buffer.from(this.getKey(collection) + " ");
|
||||
gt[gt.length - 1] = 0;
|
||||
|
||||
let lt = Buffer.alloc(gt.length);
|
||||
lt.set(gt);
|
||||
lt[gt.length - 1] = 0xFF;
|
||||
|
||||
return {
|
||||
gt,
|
||||
lt
|
||||
}
|
||||
}
|
||||
|
||||
public async keys() {
|
||||
let { collection, document } = await this.resolve(this.path);
|
||||
if (document)
|
||||
throw new Error("Keys only works on collections!");
|
||||
if (!collection)
|
||||
throw new Error("There must be a collection");
|
||||
|
||||
return new Promise<string[]>((yes, no) => {
|
||||
let keys = [];
|
||||
const stream = this.database.data.createKeyStream({
|
||||
...this.getStreamOptions(collection),
|
||||
keyAsBuffer: false
|
||||
})
|
||||
stream.on("data", (key: string) => {
|
||||
let s = key.split("/", 2);
|
||||
if (s.length > 1)
|
||||
keys.push(s[1]);
|
||||
});
|
||||
stream.on("end", () => yes(keys));
|
||||
stream.on("error", no);
|
||||
});
|
||||
}
|
||||
|
||||
private getFieldValue(data: any, path: FieldPath) {
|
||||
let parts = path.split(".");
|
||||
let d = data;
|
||||
while (parts.length > 0) {
|
||||
let seg = parts.shift();
|
||||
|
||||
d = data[seg];
|
||||
if (d === undefined || d === null)
|
||||
break; // Undefined/Null has no other fields!
|
||||
}
|
||||
return d;
|
||||
}
|
||||
|
||||
private fitsWhere(data: any): boolean {
|
||||
if (this.where.length > 0) {
|
||||
return this.where.every(where => {
|
||||
let val = this.getFieldValue(data, where.fieldPath);
|
||||
switch (where.opStr) {
|
||||
case "<":
|
||||
return val < where.value;
|
||||
case "<=":
|
||||
return val <= where.value;
|
||||
case "==":
|
||||
return val == where.value;
|
||||
case ">=":
|
||||
return val >= where.value;
|
||||
case ">":
|
||||
return val > where.value;
|
||||
case "array-contains":
|
||||
if (Array.isArray(val)) {
|
||||
return val.some(e => e === where.value);
|
||||
}
|
||||
|
||||
break;
|
||||
// case "array-contains-any":
|
||||
// case "in":
|
||||
|
||||
default:
|
||||
throw new Error("Invalid where operation " + where.opStr);
|
||||
}
|
||||
})
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
async get() {
|
||||
let { collection, document } = await this.resolve(this.path);
|
||||
if (document)
|
||||
throw new Error("Keys only works on collections!");
|
||||
if (!collection)
|
||||
throw new Error("There must be a collection");
|
||||
return new Promise<DocRes[]>((yes, no) => {
|
||||
const stream = this.database.data.iterator({
|
||||
...this.getStreamOptions(collection),
|
||||
keyAsBuffer: false,
|
||||
valueAsBuffer: true
|
||||
})
|
||||
|
||||
let values: DocRes[] = [];
|
||||
|
||||
const onValue = (err: Error, key: string, value: Buffer) => {
|
||||
if (err) {
|
||||
no(err);
|
||||
stream.end(err => Logging.error(err));
|
||||
}
|
||||
else {
|
||||
if (!key && !value) {
|
||||
// END
|
||||
Logging.debug("Checked all!")
|
||||
yes(values);
|
||||
} else {
|
||||
let s = key.split("/", 2);
|
||||
if (s.length <= 1)
|
||||
return;
|
||||
|
||||
const id = s[1];
|
||||
|
||||
let data = decode(value);
|
||||
if (this.fitsWhere(data)) {
|
||||
Logging.debug("Found fitting")
|
||||
if (this.limit < 0 || value.length < this.limit) {
|
||||
values.push({
|
||||
id,
|
||||
data
|
||||
});
|
||||
|
||||
}
|
||||
else {
|
||||
stream.end((err) => err ? no(err) : yes(values))
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
stream.next(onValue);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
stream.next(onValue)
|
||||
})
|
||||
}
|
||||
|
||||
private subscription: {
|
||||
key: string,
|
||||
onChange: (change: (DocRes & { type: ChangeTypes })[]) => void
|
||||
};
|
||||
|
||||
async snapshot(onChange: (change: (DocRes & { type: ChangeTypes })[]) => void) {
|
||||
if (this.subscription)
|
||||
throw new Error("This query is already subscribed!");
|
||||
let { collection, document } = await this.resolve(this.path);
|
||||
|
||||
let data = await this.get();
|
||||
|
||||
let key = this.getKey(collection, document);
|
||||
this.subscription = {
|
||||
key,
|
||||
onChange
|
||||
}
|
||||
let s = this.database.changes.get(key);
|
||||
if (!s) {
|
||||
s = new Set();
|
||||
this.database.changes.set(key, s);
|
||||
}
|
||||
|
||||
s.add(this.onChange);
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
onChange(change: Change) {
|
||||
// if(change.sender === this.sender)
|
||||
// return
|
||||
|
||||
if (this.fitsWhere(change.data)) {
|
||||
this.subscription.onChange([{
|
||||
id: change.document,
|
||||
data: change.data,
|
||||
type: change.type
|
||||
}])
|
||||
}
|
||||
}
|
||||
|
||||
unsubscribe() {
|
||||
if (!this.subscription)
|
||||
return;
|
||||
let s = this.database.changes.get(this.subscription.key);
|
||||
s.delete(this.onChange);
|
||||
if (s.size <= 0)
|
||||
this.database.changes.delete(this.subscription.key);
|
||||
|
||||
this.subscription = undefined;
|
||||
}
|
||||
|
||||
|
||||
public async collections() {
|
||||
return new Promise<string[]>((yes, no) => {
|
||||
let keys = [];
|
||||
const stream = this.database.data.createKeyStream({ keyAsBuffer: false })
|
||||
@ -197,12 +533,14 @@ export default class Query {
|
||||
throw new Error("There can be no document defined on this operation");
|
||||
}
|
||||
|
||||
//TODO: Lock whole collection!
|
||||
|
||||
let batch = this.database.data.batch();
|
||||
try {
|
||||
if (collection) {
|
||||
let keys = await this.keys();
|
||||
for (let key in keys) {
|
||||
batch.del(key);
|
||||
let documents = await this.keys();
|
||||
for (let document in documents) {
|
||||
batch.del(this.getKey(collection, document));
|
||||
}
|
||||
await batch.write();
|
||||
batch = undefined;
|
||||
@ -214,80 +552,7 @@ export default class Query {
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
private subscription: {
|
||||
key: string;
|
||||
type: Set<ChangeTypes>;
|
||||
send: (data: Omit<Change, "sender">) => void;
|
||||
};
|
||||
async subscribe(send: (data: Omit<Change, "sender">) => void, type: ChangeTypes[] | undefined, _options: Partial<ISubscribeOptions>) {
|
||||
let options: ISubscribeOptions = {
|
||||
existing: true,
|
||||
..._options
|
||||
}
|
||||
|
||||
let { collection, document } = await this.resolve(this.path);
|
||||
|
||||
let key = this.getKey(collection, document);
|
||||
let s = this.database.changes.get(key) || new Set();
|
||||
s.add(this.onChange)
|
||||
this.database.changes.set(key, s);
|
||||
|
||||
this.subscription = {
|
||||
key,
|
||||
send,
|
||||
type: new Set(type || [])
|
||||
};
|
||||
|
||||
Logging.debug("Existing?", options.existing)
|
||||
|
||||
if (options.existing) {
|
||||
if (document) {
|
||||
send({
|
||||
document: document,
|
||||
type: "added",
|
||||
data: await this.get(),
|
||||
})
|
||||
} else {
|
||||
await this.keys().then(async documents => {
|
||||
for (let document of documents) {
|
||||
const data = await this.getDoc(collection, document);
|
||||
if (data)
|
||||
send({
|
||||
type: "added",
|
||||
document,
|
||||
data
|
||||
})
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
Logging.debug("Subscribed");
|
||||
}
|
||||
|
||||
async onChange(change: Change) {
|
||||
const { type, send } = this.subscription;
|
||||
|
||||
// Events from the sender are handled locally
|
||||
if (change.sender !== this.sender && type.has(change.type)) {
|
||||
let c = { ...change };
|
||||
delete c.sender;
|
||||
send(c)
|
||||
}
|
||||
}
|
||||
|
||||
unsubscribe() {
|
||||
if (!this.subscription) {
|
||||
const { key } = this.subscription;
|
||||
let s = this.database.changes.get(key);
|
||||
if (s) {
|
||||
s.delete(this.onChange);
|
||||
if (s.size <= 0)
|
||||
this.database.changes.delete(key);
|
||||
}
|
||||
this.subscription = undefined;
|
||||
}
|
||||
public static fromQuery(query: Query) {
|
||||
return new CollectionQuery(...Query.getConstructorParams(query));
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user