io.fabric8.maven.docker.util

Class DockerFileUtil

java.lang.Object

io.fabric8.maven.docker.util.DockerFileUtil

public class DockerFileUtil
extends Object

Utility class for dealing with dockerfiles

Since:

21/01/16

Author:

roland

Method Summary

Modifier and Type	Method and Description
static String	extractBaseImage(File dockerFile, Properties properties, String filter) Extract the base image from a dockerfile.
static List<String[]>	extractLines(File dockerFile, String keyword, Properties props, String filter) Extract all lines containing the given keyword
static String	interpolate(File dockerFile, Properties properties, String filter) Interpolate a docker file with the given properties and filter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

extractBaseImage

public static String extractBaseImage(File dockerFile,
                                      Properties properties,
                                      String filter)
                               throws IOException

Extract the base image from a dockerfile. The first line containing a FROM is taken.

Parameters:

dockerFile - file from where to extract the base image

properties - holding values used for interpolation

filter - @return the base image name or null if none is found.

Throws:

IOException

extractLines

public static List<String[]> extractLines(File dockerFile,
                                          String keyword,
                                          Properties props,
                                          String filter)
                                   throws IOException

Extract all lines containing the given keyword

Parameters:

dockerFile - dockerfile to examine

keyword - keyword to extract the lines for

Returns:

list of matched lines or an empty list

Throws:

IOException

interpolate

public static String interpolate(File dockerFile,
                                 Properties properties,
                                 String filter)
                          throws IOException

Interpolate a docker file with the given properties and filter

Parameters:

dockerFile - docker file to interpolate

properties - properties to replace

filter - filter holding delimeters

Returns:

Throws:

IOException