74 lines
1.7 KiB
PHP
74 lines
1.7 KiB
PHP
<?php
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/**
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* Shows how to query data into `Stream`
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*/
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require __DIR__ . '/../vendor/autoload.php';
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use InfluxDB2\Client;
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use InfluxDB2\Point;
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$org = 'my-org';
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$bucket = 'my-bucket';
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$token = 'my-token';
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//
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// Creating client
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//
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$client = new Client([
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"url" => "http://localhost:8086",
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"token" => $token,
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"bucket" => $bucket,
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"org" => $org,
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"precision" => InfluxDB2\Model\WritePrecision::S
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]);
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//
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// Write test data into InfluxDB
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//
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$writeApi = $client->createWriteApi();
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$pointArray = [];
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$dateNow = new DateTime('NOW');
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for ($i = 1; $i <= 10; $i++) {
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$point = Point::measurement("weather")
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->addTag("location", "San Francisco")
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->addField("temperature", rand(5, 25))
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->time($dateNow->getTimestamp());
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$pointArray[] = $point;
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$dateNow->sub(new DateInterval('P1D'));
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}
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$writeApi->write($pointArray);
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$writeApi->close();
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//
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// Get query client
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//
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$queryApi = $client->createQueryApi();
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//
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// Synchronously executes the Flux query and return stream of FluxRecord
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//
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$queryApi = $client->createQueryApi();
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$query = "from(bucket: \"my-bucket\")
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|> range(start: 0)
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|> filter(fn: (r) => r[\"_measurement\"] == \"weather\"
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and r[\"_field\"] == \"temperature\")";
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$result = $queryApi->queryStream($query);
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//
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// Working with returned data into Stream
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//
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printf("\n\n----------------------------- Query Stream -------------------------------\n\n");
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foreach ($result->each() as $record) {
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$location = $record["location"];
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$temperature = $record->getValue();
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$time = $record->getTime();
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$measurement = $record->getMeasurement();
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print " $measurement in $location at $time - Temperature is $temperature °C\n";
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}
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$client->close();
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