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        <h1><a href="../../../index.html">All files</a> / <a href="index.html">src/lib/db</a> client-instance-store.ts</h1>
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            <div class='fl pad1y space-right2'>
                <span class="strong">72.34% </span>
                <span class="quiet">Statements</span>
                <span class='fraction'>34/47</span>
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                <span class="strong">85.71% </span>
                <span class="quiet">Branches</span>
                <span class='fraction'>6/7</span>
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            <div class='fl pad1y space-right2'>
                <span class="strong">68.42% </span>
                <span class="quiet">Functions</span>
                <span class='fraction'>13/19</span>
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            <div class='fl pad1y space-right2'>
                <span class="strong">72.09% </span>
                <span class="quiet">Lines</span>
                <span class='fraction'>31/43</span>
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">import EventEmitter from 'events';
import { Knex } from 'knex';
import { Logger, LogProvider } from '../logger';
import {
    IClientInstance,
    IClientInstanceStore,
    INewClientInstance,
} from '../types/stores/client-instance-store';
import { hoursToMilliseconds } from 'date-fns';
import Timeout = NodeJS.Timeout;
&nbsp;
const metricsHelper = require('../util/metrics-helper');
const { DB_TIME } = require('../metric-events');
&nbsp;
const COLUMNS = [
    'app_name',
    'instance_id',
    'sdk_version',
    'client_ip',
    'last_seen',
    'created_at',
    'environment',
];
const TABLE = 'client_instances';
&nbsp;
const mapRow = (row) =&gt; ({
    appName: row.app_name,
    instanceId: row.instance_id,
    sdkVersion: row.sdk_version,
    clientIp: row.client_ip,
    lastSeen: row.last_seen,
    createdAt: row.created_at,
    environment: row.environment,
});
&nbsp;
const mapToDb = (client) =&gt; ({
    app_name: client.appName,
    instance_id: client.instanceId,
    sdk_version: client.sdkVersion || '',
    client_ip: client.clientIp,
    last_seen: client.lastSeen || 'now()',
    environment: client.environment || 'default',
});
&nbsp;
export default class ClientInstanceStore implements IClientInstanceStore {
    private db: Knex;
&nbsp;
    private logger: Logger;
&nbsp;
    private eventBus: EventEmitter;
&nbsp;
    private metricTimer: Function;
&nbsp;
    private timer: Timeout;
&nbsp;
    constructor(db: Knex, eventBus: EventEmitter, getLogger: LogProvider) {
        this.db = db;
        this.eventBus = eventBus;
        this.logger = getLogger('client-instance-store.ts');
        this.metricTimer = (action) =&gt;
            metricsHelper.wrapTimer(eventBus, DB_TIME, {
                store: 'instance',
                action,
            });
        const clearer = () =&gt; this._removeInstancesOlderThanTwoDays();
        setTimeout(clearer, 10).unref();
        this.timer = setInterval(clearer, hoursToMilliseconds(24)).unref();
    }
&nbsp;
    async _removeInstancesOlderThanTwoDays(): Promise&lt;void&gt; {
        const rows = await this.db(TABLE)
            .whereRaw("created_at &lt; now() - interval '2 days'")
            .del();
&nbsp;
        <span class="missing-if-branch" title="if path not taken" >I</span>if (rows &gt; 0) {
<span class="cstat-no" title="statement not covered" >            this.logger.debug(`Deleted ${rows} instances`);</span>
        }
    }
&nbsp;
    async setLastSeen({
        appName,
        instanceId,
        environment,
        clientIp,
    }: INewClientInstance): Promise&lt;void&gt; {
        await this.db(TABLE)
            .update({ last_seen: new Date(), client_ip: clientIp })
            .where({ app_name: appName, instance_id: instanceId, environment })
            .onConflict(['app_name', 'instance_id', 'environment'])
            .ignore();
    }
&nbsp;
    async bulkUpsert(instances: INewClientInstance[]): Promise&lt;void&gt; {
        const rows = instances.map(mapToDb);
        await this.db(TABLE)
            .insert(rows)
            .onConflict(['app_name', 'instance_id', 'environment'])
            .merge();
    }
&nbsp;
<span class="fstat-no" title="function not covered" >    async </span>delete({
        appName,
        instanceId,
    }: Pick&lt;INewClientInstance, 'appName' | 'instanceId'&gt;): Promise&lt;void&gt; {
<span class="cstat-no" title="statement not covered" >        await this.db(TABLE)</span>
            .where({ app_name: appName, instance_id: instanceId })
            .del();
    }
&nbsp;
<span class="fstat-no" title="function not covered" >    async </span>deleteAll(): Promise&lt;void&gt; {
<span class="cstat-no" title="statement not covered" >        await this.db(TABLE).del();</span>
    }
&nbsp;
<span class="fstat-no" title="function not covered" >    async </span>get({
        appName,
        instanceId,
    }: Pick&lt;
        INewClientInstance,
        'appName' | 'instanceId'
    &gt;): Promise&lt;IClientInstance&gt; {
        const row = <span class="cstat-no" title="statement not covered" >await this.db(TABLE)</span>
            .where({ app_name: appName, instance_id: instanceId })
            .first();
<span class="cstat-no" title="statement not covered" >        return mapRow(row);</span>
    }
&nbsp;
    async exists({
        appName,
        instanceId,
    }: Pick&lt;INewClientInstance, 'appName' | 'instanceId'&gt;): Promise&lt;boolean&gt; {
        const result = await this.db.raw(
            `SELECT EXISTS (SELECT 1 FROM ${TABLE} WHERE app_name = ? AND instance_id = ?) AS present`,
            [appName, instanceId],
        );
        const { present } = result.rows[0];
        return present;
    }
&nbsp;
    async insert(details: INewClientInstance): Promise&lt;void&gt; {
        const stopTimer = this.metricTimer('insert');
&nbsp;
        await this.db(TABLE)
            .insert(mapToDb(details))
            .onConflict(['app_name', 'instance_id', 'environment'])
            .merge();
&nbsp;
        stopTimer();
    }
&nbsp;
<span class="fstat-no" title="function not covered" >    async </span>getAll(): Promise&lt;IClientInstance[]&gt; {
        const stopTimer = <span class="cstat-no" title="statement not covered" >this.metricTimer('getAll');</span>
&nbsp;
        const rows = <span class="cstat-no" title="statement not covered" >await this.db</span>
            .select(COLUMNS)
            .from(TABLE)
            .orderBy('last_seen', 'desc');
&nbsp;
        const toggles = <span class="cstat-no" title="statement not covered" >rows.map(mapRow);</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >        stopTimer();</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >        return toggles;</span>
    }
&nbsp;
    async getByAppName(appName: string): Promise&lt;IClientInstance[]&gt; {
        const rows = await this.db
            .select()
            .from(TABLE)
            .where('app_name', appName)
            .orderBy('last_seen', 'desc');
&nbsp;
        return rows.map(mapRow);
    }
&nbsp;
<span class="fstat-no" title="function not covered" >    async </span>getDistinctApplications(): Promise&lt;string[]&gt; {
        const rows = <span class="cstat-no" title="statement not covered" >await this.db</span>
            .distinct('app_name')
            .select(['app_name'])
            .from(TABLE)
            .orderBy('app_name', 'desc');
&nbsp;
<span class="cstat-no" title="statement not covered" >        return rows.map(<span class="fstat-no" title="function not covered" >(r</span>) =&gt; <span class="cstat-no" title="statement not covered" >r.app_name)</span>;</span>
    }
&nbsp;
    async deleteForApplication(appName: string): Promise&lt;void&gt; {
        return this.db(TABLE).where('app_name', appName).del();
    }
&nbsp;
    destroy(): void {
        clearInterval(this.timer);
    }
}
&nbsp;</pre></td></tr></table></pre>

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