JarCasting
ebx-unixtime-sdk
A simple reusable implementation of a unix time construct.
This was originally created for use in Java 6-7 to allow for test mocking but since Java 8 we also have:
import java.time.Clock;
...
long unixTimestamp = Clock.systemUTC().instant().getEpochSecond();
and
import java.time.Instant;
...
long unixTimestamp = Instant.now().getEpochSecond();
Wherever unix times are required (and form part of business logic) the preferred usage is to inject java.time.Clock into constructors or failing that Supplier<Long>.
Installation
For our latest stable release use:
<dependency>
<groupId>com.echobox</groupId>
<artifactId>ebx-unixtime-sdk</artifactId>
<version>2.0.0</version>
</dependency>
Example using java.time.Clock
Important: When testing please use Clock.fixed(Instant.parse("2017-10-22T07:52 :11Z "), ZoneOffset.UTC) or similar rather than mocking the clock to avoid NPEs.
public class Test {
private final Clock clock;
public Test(Clock clock) {
this.clock = clock;
}
public void doSomething() {
long currentUnixTime = clock.instant().getEpochSecond();
...
}
}
We could then instantiate by:
new Test(Clock.systemUTC())
or
new Test(Clock.fixed(Instant.parse("2017-10-22T07:52:11Z"), ZoneOffset.UTC))
Example using Supplier<Long>
public class Test {
private final Long<Supplier> unixTimeSupplier;
public Test(Long<Supplier> unixTimeSupplier) {
this.unixTimeSupplier = unixTimeSupplier;
}
public void doSomething() {
long currentUnixTime = unixTimeSupplier.get();
...
}
}
We could then instantiate by:
new Test(Instant.now()::getEpochSecond)
or where the existing class still has legacy mocks:
new Test(UnixTime::now)
