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 org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator	createInterpolator(MojoParameters params, String filter) Create an interpolator for the given maven parameters and filter configuration.
static Map<String,String>	extractArgs(File dockerfile, org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator) Extract Args from dockerfile.
protected static Map<String,String>	extractArgsFromLines(List<String[]> argLines) Helper method for extractArgs(exposed for test)
static List<String>	extractBaseImages(File dockerFile, org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator) Extract the base images from a dockerfile.
static String[]	extractDelimiters(String filter)
static List<String[]>	extractLines(File dockerFile, String keyword, org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator) Extract all lines containing the given keyword
static String	interpolate(File dockerFile, org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator) Interpolate a docker file with the given properties and filter
static com.google.gson.JsonObject	readDockerConfig()
static Map<String,?>	readKubeConfig()

Methods inherited from class java.lang.Object

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

Method Detail

extractBaseImages

public static List<String> extractBaseImages(File dockerFile,
                                             org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)
                                      throws IOException

Extract the base images from a dockerfile. All lines containing a FROM is taken.

Parameters:

dockerFile - file from where to extract the base image

interpolator - interpolator for replacing properties

Returns:

LinkedList of base images name or empty collection if none is found.

Throws:

IOException

extractArgs

public static Map<String,String> extractArgs(File dockerfile,
                                             org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)
                                      throws IOException

Extract Args from dockerfile. All lines containing ARG is taken.

Parameters:

dockerfile - Docker File

interpolator - interpolator for replacement

Returns:

HashMap of arguments or empty collection if none is found

Throws:

IOException

extractLines

public static List<String[]> extractLines(File dockerFile,
                                          String keyword,
                                          org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)
                                   throws IOException

Extract all lines containing the given keyword

Parameters:

dockerFile - dockerfile to examine

keyword - keyword to extract the lines for

interpolator - interpolator for replacing properties

Returns:

list of matched lines or an empty list

Throws:

IOException

interpolate

public static String interpolate(File dockerFile,
                                 org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)
                          throws IOException

Interpolate a docker file with the given properties and filter

Parameters:

dockerFile - docker file to interpolate

interpolator - interpolator for replacing properties

Returns:

The interpolated contents of the file.

Throws:

IOException

createInterpolator

public static org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator createInterpolator(MojoParameters params,
                                                                                                       String filter)

Create an interpolator for the given maven parameters and filter configuration.

Parameters:

params - The maven parameters.

filter - The filter configuration.

Returns:

An interpolator for replacing maven properties.

extractArgsFromLines

protected static Map<String,String> extractArgsFromLines(List<String[]> argLines)

Helper method for extractArgs(exposed for test)

Parameters:

argLines - list of string arrays containing lines with words

Returns:

map of parsed arguments

readDockerConfig

public static com.google.gson.JsonObject readDockerConfig()

extractDelimiters

public static String[] extractDelimiters(String filter)

readKubeConfig

public static Map<String,?> readKubeConfig()