DockerUtils

java.lang.Object

com.amazonaws.xray.utils.DockerUtils

public class DockerUtils extends Object

Utility class to get metadata for dockerized containers

Constructor Summary

Constructors

Constructor

Description

DockerUtils()

DockerUtils(URL cgroupLocation)
Method Summary

Modifier and Type

Method

Description

@Nullable String

getContainerId()

Reads the docker-generated cgroup file that lists the full (untruncated) docker container ID at the end of each line.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- DockerUtils
  
  public DockerUtils()
- DockerUtils
  
  public DockerUtils(URL cgroupLocation)
Method Details
- getContainerId
  
  public @Nullable String getContainerId() throws IOException
  
  Reads the docker-generated cgroup file that lists the full (untruncated) docker container ID at the end of each line. This method takes advantage of that fact by just reading the 64-character ID from the end of the first line.
  
  Returns:
  
  the untruncated Docker container ID, or null if it can't be read
  
  Throws:
  
  IOException - if the file cannot be read