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com.github.dockerjava.core.DefaultDockerClientConfig Maven / Gradle / Ivy
package com.github.dockerjava.core;
import com.github.dockerjava.api.exception.DockerClientException;
import com.github.dockerjava.api.model.AuthConfig;
import com.github.dockerjava.api.model.AuthConfigurations;
import com.github.dockerjava.core.NameParser.HostnameReposName;
import com.github.dockerjava.core.NameParser.ReposTag;
import java.util.Optional;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.SystemUtils;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.net.URI;
import java.util.HashSet;
import java.util.Map;
import java.util.Objects;
import java.util.Properties;
import java.util.Set;
import static org.apache.commons.lang3.BooleanUtils.isTrue;
/**
* Respects some of the docker CLI options. See https://docs.docker.com/engine/reference/commandline/cli/#environment-variables
*/
public class DefaultDockerClientConfig implements Serializable, DockerClientConfig {
private static final long serialVersionUID = 1L;
public static final String DOCKER_HOST = "DOCKER_HOST";
public static final String DOCKER_CONTEXT = "DOCKER_CONTEXT";
public static final String DOCKER_TLS_VERIFY = "DOCKER_TLS_VERIFY";
public static final String DOCKER_CONFIG = "DOCKER_CONFIG";
public static final String DOCKER_CERT_PATH = "DOCKER_CERT_PATH";
public static final String API_VERSION = "api.version";
public static final String REGISTRY_USERNAME = "registry.username";
public static final String REGISTRY_PASSWORD = "registry.password";
public static final String REGISTRY_EMAIL = "registry.email";
public static final String REGISTRY_URL = "registry.url";
private static final String DOCKER_JAVA_PROPERTIES = "docker-java.properties";
private static final Set CONFIG_KEYS = new HashSet<>();
static final Properties DEFAULT_PROPERTIES = new Properties();
static final String DEFAULT_DOCKER_HOST = "unix:///var/run/docker.sock";
static final String WINDOWS_DEFAULT_DOCKER_HOST = "npipe:////./pipe/docker_engine";
static {
CONFIG_KEYS.add(DOCKER_HOST);
CONFIG_KEYS.add(DOCKER_TLS_VERIFY);
CONFIG_KEYS.add(DOCKER_CONFIG);
CONFIG_KEYS.add(DOCKER_CERT_PATH);
CONFIG_KEYS.add(API_VERSION);
CONFIG_KEYS.add(REGISTRY_USERNAME);
CONFIG_KEYS.add(REGISTRY_PASSWORD);
CONFIG_KEYS.add(REGISTRY_EMAIL);
CONFIG_KEYS.add(REGISTRY_URL);
DEFAULT_PROPERTIES.put(DOCKER_CONFIG, "${user.home}/.docker");
DEFAULT_PROPERTIES.put(REGISTRY_URL, "https://index.docker.io/v1/");
DEFAULT_PROPERTIES.put(REGISTRY_USERNAME, "${user.name}");
}
private final URI dockerHost;
private final String registryUsername, registryPassword, registryEmail, registryUrl, dockerConfigPath;
private final SSLConfig sslConfig;
private final RemoteApiVersion apiVersion;
private final DockerConfigFile dockerConfig;
DefaultDockerClientConfig(URI dockerHost, DockerConfigFile dockerConfigFile, String dockerConfigPath, String apiVersion,
String registryUrl, String registryUsername, String registryPassword, String registryEmail,
SSLConfig sslConfig) {
this.dockerHost = checkDockerHostScheme(dockerHost);
this.dockerConfig = dockerConfigFile;
this.dockerConfigPath = dockerConfigPath;
this.apiVersion = RemoteApiVersion.parseConfigWithDefault(apiVersion);
this.sslConfig = sslConfig;
this.registryUsername = registryUsername;
this.registryPassword = registryPassword;
this.registryEmail = registryEmail;
this.registryUrl = registryUrl;
}
private URI checkDockerHostScheme(URI dockerHost) {
if (dockerHost == null) {
throw new DockerClientException("'dockerHost' is null");
}
return dockerHost;
}
private static Properties loadIncludedDockerProperties(Properties systemProperties) {
Properties p = new Properties();
p.putAll(DEFAULT_PROPERTIES);
try (InputStream is = DefaultDockerClientConfig.class.getResourceAsStream("/" + DOCKER_JAVA_PROPERTIES)) {
if (is != null) {
p.load(is);
}
} catch (IOException e) {
throw new RuntimeException(e);
}
replaceProperties(p, systemProperties);
return p;
}
private static void replaceProperties(Properties properties, Properties replacements) {
for (Object objectKey : properties.keySet()) {
String key = objectKey.toString();
properties.setProperty(key, replaceProperties(properties.getProperty(key), replacements));
}
}
private static String replaceProperties(String s, Properties replacements) {
for (Map.Entry entry : replacements.entrySet()) {
String key = "${" + entry.getKey() + "}";
while (s.contains(key)) {
s = s.replace(key, String.valueOf(entry.getValue()));
}
}
return s;
}
/**
* Creates a new Properties object containing values overridden from ${user.home}/.docker.io.properties
*
* @param p
* The original set of properties to override
* @return A copy of the original Properties with overridden values
*/
private static Properties overrideDockerPropertiesWithSettingsFromUserHome(Properties p, Properties systemProperties) {
Properties overriddenProperties = new Properties();
overriddenProperties.putAll(p);
final File usersDockerPropertiesFile = new File(systemProperties.getProperty("user.home"),
"." + DOCKER_JAVA_PROPERTIES);
if (usersDockerPropertiesFile.isFile()) {
try (FileInputStream in = new FileInputStream(usersDockerPropertiesFile)) {
overriddenProperties.load(in);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return overriddenProperties;
}
private static Properties overrideDockerPropertiesWithEnv(Properties properties, Map env) {
Properties overriddenProperties = new Properties();
overriddenProperties.putAll(properties);
// special case which is a sensible default
if (env.containsKey(DOCKER_HOST)) {
String value = env.get(DOCKER_HOST);
if (value != null && value.trim().length() != 0) {
overriddenProperties.setProperty(DOCKER_HOST, value);
}
}
if (env.containsKey(DOCKER_CONTEXT)) {
String value = env.get(DOCKER_CONTEXT);
if (value != null && value.trim().length() != 0) {
overriddenProperties.setProperty(DOCKER_CONTEXT, value);
}
}
for (Map.Entry envEntry : env.entrySet()) {
String envKey = envEntry.getKey();
if (CONFIG_KEYS.contains(envKey)) {
String value = envEntry.getValue();
if (value != null && value.trim().length() != 0) {
overriddenProperties.setProperty(envKey, value);
}
}
}
return overriddenProperties;
}
/**
* Creates a new Properties object containing values overridden from the System properties
*
* @param p
* The original set of properties to override
* @return A copy of the original Properties with overridden values
*/
private static Properties overrideDockerPropertiesWithSystemProperties(Properties p, Properties systemProperties) {
Properties overriddenProperties = new Properties();
overriddenProperties.putAll(p);
for (String key : CONFIG_KEYS) {
if (systemProperties.containsKey(key)) {
overriddenProperties.setProperty(key, systemProperties.getProperty(key));
}
}
return overriddenProperties;
}
public static Builder createDefaultConfigBuilder() {
return createDefaultConfigBuilder(System.getenv(), (Properties) System.getProperties().clone());
}
/**
* Allows you to build the config without system environment interfering for more robust testing
*/
static Builder createDefaultConfigBuilder(Map env, Properties systemProperties) {
Properties properties = loadIncludedDockerProperties(systemProperties);
properties = overrideDockerPropertiesWithSettingsFromUserHome(properties, systemProperties);
properties = overrideDockerPropertiesWithEnv(properties, env);
properties = overrideDockerPropertiesWithSystemProperties(properties, systemProperties);
return new Builder().withProperties(properties);
}
@Override
public URI getDockerHost() {
return dockerHost;
}
@Override
public RemoteApiVersion getApiVersion() {
return apiVersion;
}
@Override
public String getRegistryUsername() {
return registryUsername;
}
@Override
public String getRegistryPassword() {
return registryPassword;
}
@Override
public String getRegistryEmail() {
return registryEmail;
}
@Override
public String getRegistryUrl() {
return registryUrl;
}
@CheckForNull
public String getDockerConfigPath() {
return dockerConfigPath;
}
@Nonnull
public DockerConfigFile getDockerConfig() {
return dockerConfig;
}
private AuthConfig getAuthConfig() {
AuthConfig authConfig = null;
if (getRegistryUsername() != null && getRegistryPassword() != null && getRegistryUrl() != null) {
authConfig = new AuthConfig()
.withUsername(getRegistryUsername())
.withPassword(getRegistryPassword())
.withEmail(getRegistryEmail())
.withRegistryAddress(getRegistryUrl());
}
return authConfig;
}
@Override
public AuthConfig effectiveAuthConfig(String imageName) {
AuthConfig authConfig = getAuthConfig();
if (authConfig != null) {
return authConfig;
}
DockerConfigFile dockerCfg = getDockerConfig();
ReposTag reposTag = NameParser.parseRepositoryTag(imageName);
HostnameReposName hostnameReposName = NameParser.resolveRepositoryName(reposTag.repos);
return dockerCfg.resolveAuthConfig(hostnameReposName.hostname);
}
@Override
public AuthConfigurations getAuthConfigurations() {
return getDockerConfig().getAuthConfigurations();
}
@Override
public SSLConfig getSSLConfig() {
return sslConfig;
}
@Override
public boolean equals(Object o) {
return EqualsBuilder.reflectionEquals(this, o);
}
@Override
public int hashCode() {
return HashCodeBuilder.reflectionHashCode(this);
}
@Override
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
}
public static class Builder {
private URI dockerHost;
private String apiVersion, registryUsername, registryPassword, registryEmail, registryUrl, dockerConfig,
dockerCertPath, dockerContext;
private Boolean dockerTlsVerify;
private SSLConfig customSslConfig = null;
/**
* This will set all fields in the builder to those contained in the Properties object. The Properties object should contain the
* following docker-java configuration keys: DOCKER_HOST, DOCKER_TLS_VERIFY, api.version, registry.username, registry.password,
* registry.email, DOCKER_CERT_PATH, and DOCKER_CONFIG.
*/
public Builder withProperties(Properties p) {
if (p.getProperty(DOCKER_HOST) != null) {
withDockerHost(p.getProperty(DOCKER_HOST));
}
return withDockerTlsVerify(p.getProperty(DOCKER_TLS_VERIFY))
.withDockerContext(p.getProperty(DOCKER_CONTEXT))
.withDockerConfig(p.getProperty(DOCKER_CONFIG))
.withDockerCertPath(p.getProperty(DOCKER_CERT_PATH))
.withApiVersion(p.getProperty(API_VERSION))
.withRegistryUsername(p.getProperty(REGISTRY_USERNAME))
.withRegistryPassword(p.getProperty(REGISTRY_PASSWORD))
.withRegistryEmail(p.getProperty(REGISTRY_EMAIL))
.withRegistryUrl(p.getProperty(REGISTRY_URL));
}
/**
* configure DOCKER_HOST
*/
public final Builder withDockerHost(String dockerHost) {
Objects.requireNonNull(dockerHost, "uri was not specified");
this.dockerHost = URI.create(dockerHost);
return this;
}
public final Builder withApiVersion(RemoteApiVersion apiVersion) {
this.apiVersion = apiVersion.getVersion();
return this;
}
public final Builder withApiVersion(String apiVersion) {
this.apiVersion = apiVersion;
return this;
}
public final Builder withRegistryUsername(String registryUsername) {
this.registryUsername = registryUsername;
return this;
}
public final Builder withRegistryPassword(String registryPassword) {
this.registryPassword = registryPassword;
return this;
}
public final Builder withRegistryEmail(String registryEmail) {
this.registryEmail = registryEmail;
return this;
}
public Builder withRegistryUrl(String registryUrl) {
this.registryUrl = registryUrl;
return this;
}
public final Builder withDockerCertPath(String dockerCertPath) {
this.dockerCertPath = dockerCertPath;
return this;
}
public final Builder withDockerConfig(String dockerConfig) {
this.dockerConfig = dockerConfig;
return this;
}
public final Builder withDockerContext(String dockerContext) {
this.dockerContext = dockerContext;
return this;
}
public final Builder withDockerTlsVerify(String dockerTlsVerify) {
if (dockerTlsVerify != null) {
String trimmed = dockerTlsVerify.trim();
this.dockerTlsVerify = "true".equalsIgnoreCase(trimmed) || "1".equals(trimmed);
} else {
this.dockerTlsVerify = false;
}
return this;
}
public final Builder withDockerTlsVerify(Boolean dockerTlsVerify) {
this.dockerTlsVerify = dockerTlsVerify;
return this;
}
public final boolean isDockerHostSetExplicitly() {
return dockerHost != null;
}
/**
* Overrides the default {@link SSLConfig} that is used when calling {@link Builder#withDockerTlsVerify(java.lang.Boolean)} and
* {@link Builder#withDockerCertPath(String)}. This way it is possible to pass a custom {@link SSLConfig} to the resulting
* {@link DockerClientConfig} that may be created by other means than the local file system.
*/
public final Builder withCustomSslConfig(SSLConfig customSslConfig) {
this.customSslConfig = customSslConfig;
return this;
}
private void applyContextConfiguration(final String context) {
final Optional dockerContextMetaFile =
Optional.ofNullable(context)
.flatMap(ctx -> DockerContextMetaFile.resolveContextMetaFile(DockerClientConfig.getDefaultObjectMapper(),
new File(this.dockerConfig), ctx));
final Optional dockerContextTLSFile =
Optional.ofNullable(context)
.flatMap(ctx -> DockerContextMetaFile.resolveContextTLSFile(new File(this.dockerConfig), ctx));
if (dockerContextMetaFile.isPresent()) {
final Optional dockerEndpoint =
dockerContextMetaFile.map(metaFile -> metaFile.endpoints).map(endpoint -> endpoint.docker);
if (this.dockerHost == null) {
this.dockerHost = dockerEndpoint.map(endpoint -> endpoint.host).map(URI::create).orElse(null);
}
}
if (dockerContextTLSFile.isPresent() && this.dockerCertPath == null) {
this.dockerCertPath = dockerContextTLSFile.get().getAbsolutePath();
this.dockerTlsVerify = true;
}
}
public DefaultDockerClientConfig build() {
final DockerConfigFile dockerConfigFile = readDockerConfig();
final String context = (dockerContext != null) ? dockerContext : dockerConfigFile.getCurrentContext();
applyContextConfiguration(context);
SSLConfig sslConfig = null;
if (customSslConfig == null) {
if (isTrue(dockerTlsVerify)) {
dockerCertPath = checkDockerCertPath(dockerCertPath);
sslConfig = new LocalDirectorySSLConfig(dockerCertPath);
}
} else {
sslConfig = customSslConfig;
}
URI dockerHostUri = dockerHost != null
? dockerHost
: URI.create(SystemUtils.IS_OS_WINDOWS ? WINDOWS_DEFAULT_DOCKER_HOST : DEFAULT_DOCKER_HOST);
return new DefaultDockerClientConfig(dockerHostUri, dockerConfigFile, dockerConfig, apiVersion, registryUrl, registryUsername,
registryPassword, registryEmail, sslConfig);
}
private DockerConfigFile readDockerConfig() {
try {
return DockerConfigFile.loadConfig(DockerClientConfig.getDefaultObjectMapper(), dockerConfig);
} catch (IOException e) {
throw new DockerClientException("Failed to parse docker configuration file", e);
}
}
private String checkDockerCertPath(String dockerCertPath) {
if (StringUtils.isEmpty(dockerCertPath)) {
throw new DockerClientException(
"Enabled TLS verification (DOCKER_TLS_VERIFY=1) but certificate path (DOCKER_CERT_PATH) is not defined.");
}
File certPath = new File(dockerCertPath);
if (!certPath.exists()) {
throw new DockerClientException(
"Enabled TLS verification (DOCKER_TLS_VERIFY=1) but certificate path (DOCKER_CERT_PATH) '"
+ dockerCertPath + "' doesn't exist.");
} else if (!certPath.isDirectory()) {
throw new DockerClientException(
"Enabled TLS verification (DOCKER_TLS_VERIFY=1) but certificate path (DOCKER_CERT_PATH) '"
+ dockerCertPath + "' doesn't point to a directory.");
}
return dockerCertPath;
}
}
}
