1 回答
TA贡献1853条经验 获得超9个赞
恐怕您的问题对于“哪个服务器不相同”问题并不完全清楚。我不认为它定义得很好。例如,如果您有四台服务器,每台服务器都有不同的作业版本怎么办?
考虑到这一点,我假设您想要的是通过以下测试:
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.junit.jupiter.api.Test;
class QuestionTest {
@Test
void example() {
var input = List.of(
new Version("dev-1.lan", List.of(
new Job("a", "1.1.1"),
new Job("b", "10.0.1"),
new Job("c", "2.0.1")
)),
new Version("dev-2.lan", List.of(
new Job("a", "1.1.1"),
new Job("b", "10.0.1"),
new Job("c", "2.0.1")
)),
new Version("dev-3.lan", List.of(
new Job("a", "1.1.1"),
new Job("b", "10.0.1"),
new Job("c", "2.0.2")
)),
new Version("uk-1.lan", List.of(
new Job("a", "1.1.1"),
new Job("b", "10.0.0"),
new Job("c", "2.0.2")
)),
new Version("uk-2.lan", List.of(
new Job("a", "1.1.1"),
new Job("b", "10.0.0"),
new Job("c", "2.0.2")
)),
new Version("uk-3.lan", List.of(
new Job("a", "1.1.1"),
new Job("b", "10.0.0"),
new Job("c", "2.0.2")
)),
new Version("uk-4.lan", List.of(
new Job("a", "1.1.1"),
new Job("b", "10.0.1"),
new Job("c", "2.0.2")
))
);
var expectedOutput = Map.of(
"a", Map.of(
"DEV", Map.of(
"1.1.1", Set.of(1, 2, 3)
),
"UK", Map.of(
"1.1.1", Set.of(1, 2, 3, 4)
)
),
"b", Map.of(
"DEV", Map.of(
"10.0.1", Set.of(1, 2, 3)
),
"UK", Map.of(
"10.0.0", Set.of(1, 2, 3),
"10.0.1", Set.of(4)
)
),
"c", Map.of(
"DEV", Map.of(
"2.0.1", Set.of(1, 2),
"2.0.2", Set.of(3)
),
"UK", Map.of(
"2.0.2", Set.of(1, 2, 3, 4)
)
)
);
var actualOutput = Main.parse(input);
assertEquals(expectedOutput, actualOutput);
}
}
有了这个假设,您的问题就变成了使用 Java lambda 的有趣练习。我找到的解决方案是:
import static java.util.stream.Collectors.groupingBy;
import static java.util.stream.Collectors.mapping;
import static java.util.stream.Collectors.toSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
class Main {
static Map<String, Map<String, Map<String, Set<Integer>>>> parse(List<Version> input) {
return input.stream()
.flatMap(version -> version.jobs.stream().map(job -> new Entry(version, job)))
.collect(
groupingBy(
entry -> entry.jobName,
groupingBy(
entry -> entry.serverName,
groupingBy(
entry -> entry.jobVersion,
mapping(entry -> entry.serverNumber, toSet())
)
)
)
);
}
}
助手类Entry定义为:
class Entry {
final String serverName;
final int serverNumber;
final String jobName;
final String jobVersion;
Entry(Version version, Job job) {
this.serverName = version.serverName;
this.serverNumber = version.serverNumber;
this.jobName = job.name;
this.jobVersion = job.version;
}
}
与:
class Job {
final String name;
final String version;
Job(String name, String version) {
this.name = name;
this.version = version;
}
}
最后:
import java.util.List;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
class Version {
private static final Pattern SERVER_NAME_PATTERN = Pattern.compile("(\\w+)-(\\d+)\\.lan");
final String server;
final List<Job> jobs;
final String serverName;
final int serverNumber;
Version(String server, List<Job> jobs) {
this.server = server;
this.jobs = List.copyOf(jobs);
Matcher matcher = SERVER_NAME_PATTERN.matcher(server);
if (matcher.matches()) {
this.serverName = matcher.group(1).toUpperCase(Locale.US);
this.serverNumber = Integer.parseInt(matcher.group(2));
} else {
throw new IllegalArgumentException("Invalid server: " + server);
}
}
}
添加回答
举报