@synerty/vortexjs
Version:
Custom observable data serialisation and routing based on Angular 2+
238 lines • 34.6 kB
JavaScript
import { Inject, Injectable } from "@angular/core";
import { dateStr } from "../UtilMisc";
import { TupleStorageServiceABC, } from "./TupleStorageServiceABC";
import { TupleOfflineStorageNameService } from "./TupleOfflineStorageNameService";
import { addIndexedDbHandlers, IDBException, indexedDB, } from "../storage-api/indexeddb-api";
import * as i0 from "@angular/core";
// ----------------------------------------------------------------------------
const noSpaceMsgs = [
"there was not enough remaining storage space",
"QuotaExceededError",
];
const noSpaceRetryMs = 5 * 1000;
const indexDbNotOpenMsg = "IndexedDB peek_plugin_diagram_grids is not open";
function now() {
return new Date();
}
const TUPLE_STORE = "tuples";
/** Tuple Storage IndexedDB
*
* This class handles storing and retrieving tuples to/from indexed db.
*
*/
export class TupleStorageIndexedDbService extends TupleStorageServiceABC {
name;
db;
openInProgressPromise = null;
constructor(name) {
super(name);
this.name = name;
}
// ----------------------------------------------------------------------------
// Open the indexed db database
open() {
if (this.openInProgressPromise != null)
return this.openInProgressPromise;
this.openInProgressPromise = new Promise((resolve, reject) => {
// DISP Store
let request = indexedDB.open(this.dbName, 1);
addIndexedDbHandlers(request, () => {
let msg = `${dateStr()} IndexedDB : "${this.dbName}" ` +
`Failed to open IndexedDB database`;
this.openInProgressPromise = null;
reject(msg);
throw new IDBException(msg);
});
request.onsuccess = (event) => {
console.log(`${dateStr()} IndexedDB : "${this.dbName}" Success opening DB`);
if (this.db == null) {
this.db = event.target.result;
this.openInProgressPromise = null;
resolve();
}
};
request.onupgradeneeded = (event) => {
console.log(`${dateStr()} IndexedDB : "${this.dbName}" Upgrading`);
let db = event.target.result;
// SCHEMA for database points
// Schema Version 1
db.createObjectStore(TUPLE_STORE, { keyPath: "tupleSelector" });
console.log(`${dateStr()} IndexedDB : "${this.dbName}" Upgrade Success`);
};
});
return this.openInProgressPromise;
}
// ----------------------------------------------------------------------------
// Check if the DB is open
async isOpen() {
return this.db != null;
}
async close() {
if (!(await this.isOpen())) {
throw new Error(`IndexedDB "${this.dbName}" is not open`);
}
this.db.close();
this.db = null;
}
async truncateStorage() {
if (!(await this.isOpen()))
await this.open();
let startTime = now();
await new Promise((resolve, reject) => {
let response = indexedDB.deleteDatabase(this.dbName);
addIndexedDbHandlers(response, () => {
reject(`${dateStr()} IndexedDB: truncateStorage "truncateStorage" error`);
throw new IDBException("deleteDatabase error");
});
response.oncomplete = () => {
let timeTaken = now() - startTime;
console.log(`${dateStr()} IndexedDB: truncateStorage` +
` took ${timeTaken}ms (in thread)`);
resolve();
};
});
}
objectStoreTx(forWrite) {
// Get the Read Only case out the way, it's easy
const mode = forWrite ? "readwrite" : "readonly";
const tx = this.db.transaction(TUPLE_STORE, mode);
return tx.objectStore(TUPLE_STORE);
}
// ----------------------------------------------------------------------------
// Load the display items from the cache
// ----------------------------------------------------------------------------
// Load the display items from the cache
async loadTuplesEncoded(tupleSelector) {
if (!(await this.isOpen()))
await this.open();
let startTime = now();
return await new Promise((resolve, reject) => {
const request = this.objectStoreTx(false) //
.get(tupleSelector.toOrderedJsonStr());
addIndexedDbHandlers(request, () => {
let msg = `${dateStr()} IndexedDB: Index open cursor`;
reject(msg);
throw new IDBException(msg);
});
request.onsuccess = () => {
let timeTaken = now() - startTime;
console.log(`${dateStr()} IndexedDB: loadTuples took ${timeTaken}ms (in thread)`);
// Called for each matching record
let data = request.result;
if (data == null) {
resolve(null);
return;
}
resolve(data.payload);
};
});
}
async batchSaveTuplesEncoded(data) {
if (!(await this.isOpen()))
await this.open();
// The payload is a convenient way to serialise and compress the data
const items = [];
const nowDate = new Date();
for (const data_ of data) {
{
items.push({
tupleSelector: data_.tupleSelector.toOrderedJsonStr(),
dateTime: nowDate,
payload: data_.vortexMsg,
});
}
}
const startTime = now();
while (true) {
try {
// Run the inserts
const store = this.objectStoreTx(true);
const promises = [];
for (const item of items) {
promises.push(new Promise((res2, rej2) => {
const response = store.put(item);
addIndexedDbHandlers(response, () => {
rej2(`${dateStr()} IndexedDB: saveTuplesEncoded "put" error`);
throw new IDBException("Put error");
});
response.onsuccess = () => {
const timeTaken = now() - startTime;
console.log(`${dateStr()} IndexedDB: saveTuplesEncoded` +
` took ${timeTaken}ms (in thread)` +
` Inserted/updated ${item.payload?.length} of encoding`);
res2();
};
}));
}
await Promise.all(promises);
return;
}
catch (e) {
if (this.isNoSpaceMessage(e)) {
console.log(`${dateStr()} IndexedDB: ${this.name.name}` +
" saveTuplesEncoded" +
" Waiting for space quote extension");
await new Promise((r) => setTimeout(() => r(), noSpaceRetryMs));
continue;
}
throw new Error(e);
}
}
}
// ----------------------------------------------------------------------------
// Add disply items to the cache
async saveTuplesEncoded(tupleSelector, vortexMsg) {
await this.batchSaveTuplesEncoded([
{ tupleSelector: tupleSelector, vortexMsg: vortexMsg },
]);
}
async deleteTuples(tupleSelector) {
if (!(await this.isOpen()))
await this.open();
// The payload is a convenient way to serialise and compress the data
const tupleSelectorStr = tupleSelector.toOrderedJsonStr();
const startTime = now();
await new Promise((resolve, reject) => {
// Run the inserts
const response = this.objectStoreTx(true) //
.delete(tupleSelectorStr);
addIndexedDbHandlers(response, () => {
reject(`${dateStr()} IndexedDB: deleteTuples "delete" error`);
throw new IDBException("Put error");
});
response.onsuccess = () => {
let timeTaken = now() - startTime;
console.log(`${dateStr()} IndexedDB: deleteTuples` +
` took ${timeTaken}ms (in thread)`);
resolve();
};
});
}
async deleteOldTuples(deleteDataBeforeDate) {
if (!(await this.isOpen()))
await this.open();
console.log(`${dateStr()} WARNING: deleteOldTuple not implemented for IndexedDB`);
return Promise.resolve();
}
// noinspection JSMethodCanBeStatic
isNoSpaceMessage(message) {
for (const msg of noSpaceMsgs) {
if (message.indexOf(msg) !== -1)
return true;
}
return false;
}
// noinspection JSMethodCanBeStatic
isNotOpenMessage(message) {
return message.indexOf(indexDbNotOpenMsg) !== -1;
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TupleStorageIndexedDbService, deps: [{ token: TupleOfflineStorageNameService }], target: i0.ɵɵFactoryTarget.Injectable });
static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TupleStorageIndexedDbService });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TupleStorageIndexedDbService, decorators: [{
type: Injectable
}], ctorParameters: function () { return [{ type: undefined, decorators: [{
type: Inject,
args: [TupleOfflineStorageNameService]
}] }]; } });
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{ Inject, Injectable } from \"@angular/core\";\nimport { dateStr } from \"../UtilMisc\";\nimport {\n    TupleStorageBatchSaveArguments,\n    TupleStorageServiceABC,\n} from \"./TupleStorageServiceABC\";\nimport { TupleOfflineStorageNameService } from \"./TupleOfflineStorageNameService\";\nimport { TupleSelector } from \"../TupleSelector\";\nimport {\n    addIndexedDbHandlers,\n    IDBException,\n    indexedDB,\n} from \"../storage-api/indexeddb-api\";\n\n// ----------------------------------------------------------------------------\n\nconst noSpaceMsgs = [\n    \"there was not enough remaining storage space\",\n    \"QuotaExceededError\",\n];\nconst noSpaceRetryMs = 5 * 1000;\n\nconst indexDbNotOpenMsg = \"IndexedDB peek_plugin_diagram_grids is not open\";\n\nfunction now(): any {\n    return new Date();\n}\n\nconst TUPLE_STORE = \"tuples\";\n\ninterface DataStructI {\n    tupleSelector: string;\n    dateTime: Date;\n    payload: string;\n}\n\n/** Tuple Storage IndexedDB\n *\n * This class handles storing and retrieving tuples to/from indexed db.\n *\n */\n@Injectable()\nexport class TupleStorageIndexedDbService extends TupleStorageServiceABC {\n    db: any;\n    private openInProgressPromise: Promise<void> | null = null;\n\n    constructor(@Inject(TupleOfflineStorageNameService) public name) {\n        super(name);\n    }\n\n    // ----------------------------------------------------------------------------\n    // Open the indexed db database\n    open(): Promise<void> {\n        if (this.openInProgressPromise != null)\n            return this.openInProgressPromise;\n\n        this.openInProgressPromise = new Promise<void>((resolve, reject) => {\n            // DISP Store\n\n            let request = indexedDB.open(this.dbName, 1);\n            addIndexedDbHandlers(request, () => {\n                let msg =\n                    `${dateStr()} IndexedDB : \"${this.dbName}\" ` +\n                    `Failed to open IndexedDB database`;\n                this.openInProgressPromise = null;\n                reject(msg);\n                throw new IDBException(msg);\n            });\n\n            request.onsuccess = (event) => {\n                console.log(\n                    `${dateStr()} IndexedDB : \"${\n                        this.dbName\n                    }\" Success opening DB`\n                );\n                if (this.db == null) {\n                    this.db = event.target.result;\n                    this.openInProgressPromise = null;\n                    resolve();\n                }\n            };\n\n            request.onupgradeneeded = (event) => {\n                console.log(\n                    `${dateStr()} IndexedDB : \"${this.dbName}\" Upgrading`\n                );\n                let db = event.target.result;\n\n                // SCHEMA for database points\n                // Schema Version 1\n                db.createObjectStore(TUPLE_STORE, { keyPath: \"tupleSelector\" });\n\n                console.log(\n                    `${dateStr()} IndexedDB : \"${this.dbName}\" Upgrade Success`\n                );\n            };\n        });\n        return this.openInProgressPromise;\n    }\n\n    // ----------------------------------------------------------------------------\n    // Check if the DB is open\n    async isOpen(): Promise<boolean> {\n        return this.db != null;\n    }\n\n    async close(): Promise<void> {\n        if (!(await this.isOpen())) {\n            throw new Error(`IndexedDB \"${this.dbName}\" is not open`);\n        }\n        this.db.close();\n        this.db = null;\n    }\n\n    async truncateStorage(): Promise<void> {\n        if (!(await this.isOpen())) await this.open();\n        let startTime = now();\n\n        await new Promise<void>((resolve, reject) => {\n            let response = indexedDB.deleteDatabase(this.dbName);\n\n            addIndexedDbHandlers(response, () => {\n                reject(\n                    `${dateStr()} IndexedDB: truncateStorage \"truncateStorage\" error`\n                );\n                throw new IDBException(\"deleteDatabase error\");\n            });\n\n            response.oncomplete = () => {\n                let timeTaken = now() - startTime;\n                console.log(\n                    `${dateStr()} IndexedDB: truncateStorage` +\n                        ` took ${timeTaken}ms (in thread)`\n                );\n                resolve();\n            };\n        });\n    }\n\n    private objectStoreTx(forWrite: boolean) {\n        // Get the Read Only case out the way, it's easy\n        const mode = forWrite ? \"readwrite\" : \"readonly\";\n        const tx = this.db.transaction(TUPLE_STORE, mode);\n        return tx.objectStore(TUPLE_STORE);\n    }\n\n    // ----------------------------------------------------------------------------\n    // Load the display items from the cache\n\n    // ----------------------------------------------------------------------------\n    // Load the display items from the cache\n    async loadTuplesEncoded(\n        tupleSelector: TupleSelector\n    ): Promise<string | null> {\n        if (!(await this.isOpen())) await this.open();\n        let startTime: any = now();\n\n        return await new Promise<string | null>((resolve, reject) => {\n            const request = this.objectStoreTx(false) //\n                .get(tupleSelector.toOrderedJsonStr());\n\n            addIndexedDbHandlers(request, () => {\n                let msg = `${dateStr()} IndexedDB: Index open cursor`;\n                reject(msg);\n                throw new IDBException(msg);\n            });\n\n            request.onsuccess = () => {\n                let timeTaken = now() - startTime;\n                console.log(\n                    `${dateStr()} IndexedDB: loadTuples took ${timeTaken}ms (in thread)`\n                );\n\n                // Called for each matching record\n                let data: DataStructI | null = request.result;\n                if (data == null) {\n                    resolve(null);\n                    return;\n                }\n\n                resolve(data.payload);\n            };\n        });\n    }\n\n    async batchSaveTuplesEncoded(\n        data: TupleStorageBatchSaveArguments[]\n    ): Promise<void> {\n        if (!(await this.isOpen())) await this.open();\n        // The payload is a convenient way to serialise and compress the data\n\n        const items: DataStructI[] = [];\n        const nowDate = new Date();\n\n        for (const data_ of data) {\n            {\n                items.push({\n                    tupleSelector: data_.tupleSelector.toOrderedJsonStr(),\n                    dateTime: nowDate,\n                    payload: data_.vortexMsg,\n                });\n            }\n        }\n\n        const startTime = now();\n\n        while (true) {\n            try {\n                // Run the inserts\n                const store = this.objectStoreTx(true);\n                const promises = [];\n\n                for (const item of items) {\n                    promises.push(\n                        new Promise<void>((res2, rej2) => {\n                            const response = store.put(item);\n\n                            addIndexedDbHandlers(response, () => {\n                                rej2(\n                                    `${dateStr()} IndexedDB: saveTuplesEncoded \"put\" error`\n                                );\n                                throw new IDBException(\"Put error\");\n                            });\n\n                            response.onsuccess = () => {\n                                const timeTaken = now() - startTime;\n                                console.log(\n                                    `${dateStr()} IndexedDB: saveTuplesEncoded` +\n                                        ` took ${timeTaken}ms (in thread)` +\n                                        ` Inserted/updated ${item.payload?.length} of encoding`\n                                );\n                                res2();\n                            };\n                        })\n                    );\n                }\n\n                await Promise.all(promises);\n                return;\n            } catch (e) {\n                if (this.isNoSpaceMessage(e)) {\n                    console.log(\n                        `${dateStr()} IndexedDB: ${this.name.name}` +\n                            \" saveTuplesEncoded\" +\n                            \" Waiting for space quote extension\"\n                    );\n                    await new Promise<void>((r) =>\n                        setTimeout(() => r(), noSpaceRetryMs)\n                    );\n                    continue;\n                }\n                throw new Error(e);\n            }\n        }\n    }\n\n    // ----------------------------------------------------------------------------\n    // Add disply items to the cache\n\n    async saveTuplesEncoded(\n        tupleSelector: TupleSelector,\n        vortexMsg: string\n    ): Promise<void> {\n        await this.batchSaveTuplesEncoded([\n            { tupleSelector: tupleSelector, vortexMsg: vortexMsg },\n        ]);\n    }\n\n    async deleteTuples(tupleSelector: TupleSelector): Promise<void> {\n        if (!(await this.isOpen())) await this.open();\n        // The payload is a convenient way to serialise and compress the data\n        const tupleSelectorStr = tupleSelector.toOrderedJsonStr();\n\n        const startTime = now();\n\n        await new Promise<void>((resolve, reject) => {\n            // Run the inserts\n            const response = this.objectStoreTx(true) //\n                .delete(tupleSelectorStr);\n\n            addIndexedDbHandlers(response, () => {\n                reject(`${dateStr()} IndexedDB: deleteTuples \"delete\" error`);\n                throw new IDBException(\"Put error\");\n            });\n\n            response.onsuccess = () => {\n                let timeTaken = now() - startTime;\n                console.log(\n                    `${dateStr()} IndexedDB: deleteTuples` +\n                        ` took ${timeTaken}ms (in thread)`\n                );\n                resolve();\n            };\n        });\n    }\n\n    async deleteOldTuples(deleteDataBeforeDate: Date): Promise<void> {\n        if (!(await this.isOpen())) await this.open();\n        console.log(\n            `${dateStr()} WARNING: deleteOldTuple not implemented for IndexedDB`\n        );\n        return Promise.resolve();\n    }\n\n    // noinspection JSMethodCanBeStatic\n    private isNoSpaceMessage(message: string): boolean {\n        for (const msg of noSpaceMsgs) {\n            if (message.indexOf(msg) !== -1) return true;\n        }\n        return false;\n    }\n\n    // noinspection JSMethodCanBeStatic\n    private isNotOpenMessage(message: string): boolean {\n        return message.indexOf(indexDbNotOpenMsg) !== -1;\n    }\n}\n"]}