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/* | ||
* Copyright @ 2018 - present 8x8, Inc. | ||
* | ||
* Licensed under the Apache License, Version 2.0 (the "License"); | ||
* you may not use this file except in compliance with the License. | ||
* You may obtain a copy of the License at | ||
* | ||
* http://www.apache.org/licenses/LICENSE-2.0 | ||
* | ||
* Unless required by applicable law or agreed to in writing, software | ||
* distributed under the License is distributed on an "AS IS" BASIS, | ||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
* See the License for the specific language governing permissions and | ||
* limitations under the License. | ||
*/ | ||
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package org.jitsi.utils | ||
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import java.time.Instant | ||
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/** | ||
* Helpers to create instances of [Instant] more easily, and Kotlin operators for it | ||
*/ | ||
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/** | ||
* Converts this instant to the number of microseconds from the epoch | ||
* of 1970-01-01T00:00:00Z. | ||
* | ||
* | ||
* If this instant represents a point on the time-line too far in the future | ||
* or past to fit in a `long` microseconds, then an exception is thrown. | ||
* | ||
* If this instant has greater than microseconds precision, then the conversion | ||
* will drop any excess precision information as though the amount in nanoseconds | ||
* was subject to integer division by one thousand. | ||
* | ||
* @return the number of microseconds since the epoch of 1970-01-01T00:00:00Z | ||
* @throws ArithmeticException if numeric overflow occurs | ||
*/ | ||
fun Instant.toEpochMicro(): Long { | ||
if (epochSecond < 0 && nano > 0) { | ||
val millis = Math.multiplyExact(epochSecond + 1, 1_000_000).toLong() | ||
val adjustment: Long = (nano / 1_000 - 1).toLong() | ||
return Math.addExact(millis, adjustment) | ||
} else { | ||
val millis = Math.multiplyExact(epochSecond, 1_000_000).toLong() | ||
return Math.addExact(millis, (nano / 1000).toLong()) | ||
} | ||
} | ||
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/** | ||
* Obtains an instance of {@code Instant} using microseconds from the | ||
* epoch of 1970-01-01T00:00:00Z. | ||
* <p> | ||
* The seconds and nanoseconds are extracted from the specified microseconds. | ||
* | ||
* @param epochMicro the number of microseconds from 1970-01-01T00:00:00Z | ||
* @return an instant, not null | ||
* @throws DateTimeException if the instant exceeds the maximum or minimum instant | ||
*/ | ||
fun instantOfEpochMicro(epochMicro: Long): Instant { | ||
val secs = Math.floorDiv(epochMicro, 1_000_000) | ||
val mos = Math.floorMod(epochMicro, 1_000_000).toLong() | ||
return Instant.ofEpochSecond(secs, mos * 1000) | ||
} |
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/* | ||
* Copyright @ 2018 - present 8x8, Inc. | ||
* | ||
* Licensed under the Apache License, Version 2.0 (the "License"); | ||
* you may not use this file except in compliance with the License. | ||
* You may obtain a copy of the License at | ||
* | ||
* http://www.apache.org/licenses/LICENSE-2.0 | ||
* | ||
* Unless required by applicable law or agreed to in writing, software | ||
* distributed under the License is distributed on an "AS IS" BASIS, | ||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
* See the License for the specific language governing permissions and | ||
* limitations under the License. | ||
*/ | ||
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package org.jitsi.utils | ||
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import io.kotest.core.spec.style.ShouldSpec | ||
import io.kotest.matchers.shouldBe | ||
import java.time.Instant | ||
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class InstantTest : ShouldSpec() { | ||
init { | ||
context("The instant helpers should work") { | ||
Instant.ofEpochMilli(123).toEpochMicro() shouldBe 123000L | ||
instantOfEpochMicro(123456).toEpochMilli() shouldBe 123L | ||
instantOfEpochMicro(123987).toEpochMilli() shouldBe 123L | ||
} | ||
} | ||
} |