@synerty/vortexjs
Version:
Custom observable data serialisation and routing based on Angular 2+
123 lines • 16.6 kB
JavaScript
import { __decorate, __param } from "tslib";
import { Inject } from "@angular/core";
import { random, SqlApiABC } from "./sql-api-abc";
import { dateStr } from "../UtilMisc";
const RETRY_NO_SPACE = "there was not enough remaining storage space";
const RETRY_DISK_ERROR = "unable to begin transaction (3850 disk I/O error)";
export let WebSqlApi = class WebSqlApi extends SqlApiABC {
constructor(dbName, dbSchema) {
super(dbName, dbSchema);
}
async isOpen() {
return this.db != null;
}
async close() {
this.db = null;
}
async _openDb() {
let retries = 5;
while (true) {
try {
return await this._openWrapped();
}
catch (err) {
err = err.message ? err.message : err;
if (retries >= 0 && WebSqlApi.checkRetryMessage(err)) {
retries--;
await new Promise((r) => setTimeout(() => r(), 100 + random()));
continue;
}
throw new Error(err);
}
}
}
async _openWrapped() {
if (await this.isOpen()) {
return;
}
this.db = openDatabase(this.dbName, "1", this.dbName, 4 * 1024 * 1024);
await this.installSchema();
}
async transaction(executeData, isQuery) {
if (!(await this.isOpen()))
await this.open();
let retries = 5;
while (true) {
try {
return await this._transactionInner(executeData, isQuery);
}
catch (e) {
if (retries >= 0 &&
(WebSqlApi.checkRetryMessage(e) || WebSqlApi.isLockedMsg(e))) {
retries--;
await new Promise((r) => setTimeout(() => r(), 100 + random()));
continue;
}
throw new Error(e);
}
}
}
async _transactionInner(executeData, isQuery) {
executeData = [...executeData];
const data = [];
await new Promise((resolve, reject) => {
this.db.transaction((t) => {
const execSql = () => {
const ed = executeData.pop();
if (ed == null) {
resolve();
return;
}
t.executeSql(ed.sql, ed.bindParams, (transaction, results) => {
/*
* results:(SQLResultSet) {
* insertId:0,
* rows:(SQLResultSetRowList){
* length:0
* },
* rowsAffected:0
* }
*/
if (isQuery) {
// ALL GOOD, Return the rows
for (let i = 0; i < results.rows.length; ++i) {
data.push(results.rows.item(i));
}
}
if (executeData.length === 0) {
resolve();
}
else {
execSql();
}
}, (tx, err) => {
err = err == null ? tx : err; // Sometimes tx is the err
reject(err.message ? err.message : err);
});
};
execSql();
});
});
return isQuery ? data : null;
}
static checkRetryMessage(message) {
if (message.indexOf(RETRY_NO_SPACE) !== -1)
return true;
return message.indexOf(RETRY_DISK_ERROR) !== -1;
}
static isLockedMsg(err) {
const msg = err.toString();
const hasNsSqlError = msg.indexOf("SQLITE.ALL - Database Error5") !== -1;
// unable to begin transaction (5 database is locked)
const hasWebSqlError = msg.indexOf("5 database is locked") !== -1;
if (hasNsSqlError || hasWebSqlError)
return true;
console.log(`${dateStr()} WebSQL: Found error message that isn't a lock : ${msg}`);
return false;
}
};
WebSqlApi = __decorate([
__param(0, Inject("")),
__param(1, Inject([]))
], WebSqlApi);
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err.message : err;\n                if (retries >= 0 && WebSqlApi.checkRetryMessage(err)) {\n                    retries--;\n                    await new Promise<void>((r) =>\n                        setTimeout(() => r(), 100 + random())\n                    );\n                    continue;\n                }\n\n                throw new Error(err);\n            }\n        }\n    }\n\n    private async _openWrapped(): Promise<void> {\n        if (await this.isOpen()) {\n            return;\n        }\n\n        this.db = openDatabase(this.dbName, \"1\", this.dbName, 4 * 1024 * 1024);\n\n        await this.installSchema();\n    }\n\n    protected async transaction(\n        executeData: SqlExecuteData[],\n        isQuery: boolean\n    ): Promise<any[] | null> {\n        if (!(await this.isOpen())) await this.open();\n\n        let retries = 5;\n        while (true) {\n            try {\n                return await this._transactionInner(executeData, isQuery);\n            } catch (e) {\n                if (\n                    retries >= 0 &&\n                    (WebSqlApi.checkRetryMessage(e) || WebSqlApi.isLockedMsg(e))\n                ) {\n                    retries--;\n                    await new Promise<void>((r) =>\n                        setTimeout(() => r(), 100 + random())\n                    );\n                    continue;\n                }\n\n                throw new Error(e);\n            }\n        }\n    }\n\n    private async _transactionInner(\n        executeData: SqlExecuteData[],\n        isQuery: boolean\n    ): Promise<any[] | null> {\n        executeData = [...executeData];\n        const data: any[] = [];\n        await new Promise<void>((resolve, reject) => {\n            this.db.transaction((t) => {\n                const execSql = () => {\n                    const ed = executeData.pop();\n                    if (ed == null) {\n                        resolve();\n                        return;\n                    }\n                    t.executeSql(\n                        ed.sql,\n                        ed.bindParams,\n                        (transaction, results) => {\n                            /*\n                             * results:(SQLResultSet) {\n                             *      insertId:0,\n                             *      rows:(SQLResultSetRowList){\n                             *          length:0\n                             *      },\n                             *      rowsAffected:0\n                             *  }\n                             */\n                            if (isQuery) {\n                                // ALL GOOD, Return the rows\n                                for (let i = 0; i < results.rows.length; ++i) {\n                                    data.push(results.rows.item(i));\n                                }\n                            }\n\n                            if (executeData.length === 0) {\n                                resolve();\n                            } else {\n                                execSql();\n                            }\n                        },\n                        (tx, err) => {\n                            err = err == null ? tx : err; // Sometimes tx is the err\n                            reject(err.message ? err.message : err);\n                        }\n                    );\n                };\n                execSql();\n            });\n        });\n\n        return isQuery ? data : null;\n    }\n\n    private static checkRetryMessage(message: string): boolean {\n        if (message.indexOf(RETRY_NO_SPACE) !== -1) return true;\n\n        return message.indexOf(RETRY_DISK_ERROR) !== -1;\n    }\n\n    private static isLockedMsg(err: any): boolean {\n        const msg = err.toString();\n\n        const hasNsSqlError =\n            msg.indexOf(\"SQLITE.ALL - Database Error5\") !== -1;\n\n        // unable to begin transaction (5 database is locked)\n        const hasWebSqlError = msg.indexOf(\"5 database is locked\") !== -1;\n\n        if (hasNsSqlError || hasWebSqlError) return true;\n\n        console.log(\n            `${dateStr()} WebSQL: Found error message that isn't a lock : ${msg}`\n        );\n        return false;\n    }\n}\n"]}