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package org.nd4j.versioncheck;
import lombok.extern.slf4j.Slf4j;
import java.io.IOException;
import java.net.URI;
import java.net.URL;
import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.*;
/**
* A runtime version check utility that does 2 things:
* (a) validates the versions of ND4J, DL4J, DataVec, RL4J, Arbiter on the class path, logging a warning if
* incompatible versions are found
* (b) allows users to get version information for the above projects at runtime.
*
* @author Alex Black
*/
@Slf4j
public class VersionCheck {
/**
* Setting the system property to false will stop ND4J from performing the version check, and logging any
* warnings/errors. By default, the version check is unable.
*/
public static final String VERSION_CHECK_PROPERTY = "org.nd4j.versioncheck";
public static final String GIT_PROPERTY_FILE_SUFFIX = "-git.properties";
private static final String SCALA_210_SUFFIX = "_2.10";
private static final String SCALA_211_SUFFIX = "_2.11";
private static final String SPARK_1_VER_STRING = "spark_1";
private static final String SPARK_2_VER_STRING = "spark_2";
private static final String UNKNOWN_VERSION = "(Unknown)";
private static final String DL4J_GROUPID = "org.deeplearning4j";
private static final String DL4J_ARTIFACT = "deeplearning4j-nn";
private static final String DATAVEC_GROUPID = "org.datavec";
private static final String DATAVEC_ARTIFACT = "datavec-api";
private static final String ND4J_GROUPID = "org.nd4j";
private static final String ND4J_JBLAS_CLASS = "org.nd4j.linalg.jblas.JblasBackend";
private static final String CANOVA_CLASS = "org.canova.api.io.data.DoubleWritable";
private static final Set GROUPIDS_TO_CHECK = new HashSet<>(Arrays.asList(
ND4J_GROUPID, DL4J_GROUPID, DATAVEC_GROUPID)); //NOTE: DL4J_GROUPID also covers Arbiter and RL4J
/**
* Detailed level for logging:
* GAV: display group ID, artifact, version
* GAVC: display group ID, artifact, version, commit ID
* FULL: display group ID, artifact, version, commit ID, build time, branch, commit message
*/
public enum Detail {
GAV,
GAVC,
FULL
}
private VersionCheck(){
}
/**
* Perform a check of the versions of ND4J, DL4J, DataVec, RL4J and Arbiter dependencies, logging a warning
* if necessary.
*/
public static void checkVersions(){
boolean doCheck = Boolean.parseBoolean(System.getProperty(VERSION_CHECK_PROPERTY, "true"));
if(!doCheck){
return;
}
if(classExists(ND4J_JBLAS_CLASS)) {
//nd4j-jblas is ancient and incompatible
log.error("Found incompatible/obsolete backend and version (nd4j-jblas) on classpath. ND4J is unlikely to"
+ " function correctly with nd4j-jblas on the classpath. JVM will now exit.");
System.exit(1);
}
if(classExists(CANOVA_CLASS)) {
//Canova is ancient and likely to pull in incompatible dependencies
log.error("Found incompatible/obsolete library Canova on classpath. ND4J is unlikely to"
+ " function correctly with this library on the classpath. JVM will now exit.");
System.exit(1);
}
List dependencies = getVersionInfos();
if(dependencies.size() <= 2){
//No -properties.git files were found on the classpath. This may be due to a misconfigured uber-jar
// or maybe running in IntelliJ with "dynamic.classpath" set to true (in workspace.xml). Either way,
// we can't check versions and don't want to log an error, which will more often than not be wrong
if(dependencies.size() == 0){
return;
}
//Another edge case: no -properties.git files were found, but DL4J and/or DataVec were inferred
// by class names. If these "inferred by opName" versions were the only things found, we should also
// not log a warning, as we can't check versions in this case
boolean dl4jViaClass = false;
boolean datavecViaClass = false;
for(VersionInfo vi : dependencies ){
if(DL4J_GROUPID.equals(vi.getGroupId()) && DL4J_ARTIFACT.equals(vi.getArtifactId())
&& (UNKNOWN_VERSION.equals(vi.getBuildVersion()))){
dl4jViaClass = true;
} else if(DATAVEC_GROUPID.equals(vi.getGroupId()) && DATAVEC_ARTIFACT.equals(vi.getArtifactId())
&& (UNKNOWN_VERSION.equals(vi.getBuildVersion()))){
datavecViaClass = true;
}
}
if(dependencies.size() == 1 && (dl4jViaClass || datavecViaClass)){
return;
} else if(dependencies.size() == 2 && dl4jViaClass && datavecViaClass){
return;
}
}
Set foundVersions = new HashSet<>();
for(VersionInfo vi : dependencies){
String g = vi.getGroupId();
if(g != null && GROUPIDS_TO_CHECK.contains(g)){
String version = vi.getBuildVersion();
if(version.contains("_spark_")){
//Normalize spark versions:
// "0.9.1_spark_1" to "0.9.1" and "0.9.1_spark_1-SNAPSHOT" to "0.9.1-SNAPSHOT"
version = version.replaceAll("_spark_1","");
version = version.replaceAll("_spark_2","");
}
foundVersions.add(version);
}
}
boolean logVersions = false;
if(foundVersions.size() > 1){
log.warn("*** ND4J VERSION CHECK FAILED - INCOMPATIBLE VERSIONS FOUND ***");
log.warn("Incompatible versions (different version number) of DL4J, ND4J, RL4J, DataVec, Arbiter are unlikely to function correctly");
logVersions = true;
}
//Also: check for mixed scala versions - but only for our dependencies... These are in the artifact ID,
// scored like dl4j-spack_2.10 and deeplearning4j-ui_2.11
//And check for mixed spark versions (again, just DL4J/DataVec etc dependencies for now)
boolean scala210 = false;
boolean scala211 = false;
boolean spark1 = false;
boolean spark2 = false;
for(VersionInfo vi : dependencies){
String artifact = vi.getArtifactId();
if(!scala210 && artifact.contains(SCALA_210_SUFFIX)){
scala210 = true;
}
if(!scala211 && artifact.contains(SCALA_211_SUFFIX)){
scala211 = true;
}
String version = vi.getBuildVersion();
if(!spark1 && version.contains(SPARK_1_VER_STRING)){
spark1 = true;
}
if(!spark2 && version.contains(SPARK_2_VER_STRING)){
spark2 = true;
}
}
if(scala210 && scala211){
log.warn("*** ND4J VERSION CHECK FAILED - FOUND BOTH SCALA VERSION 2.10 AND 2.11 ARTIFACTS ***");
log.warn("Projects with mixed Scala versions (2.10/2.11) are unlikely to function correctly");
logVersions = true;
}
if(spark1 && spark2){
log.warn("*** ND4J VERSION CHECK FAILED - FOUND BOTH SPARK VERSION 1 AND 2 ARTIFACTS ***");
log.warn("Projects with mixed Spark versions (1 and 2) are unlikely to function correctly");
logVersions = true;
}
if(logVersions){
log.info("Versions of artifacts found on classpath:");
logVersionInfo();
}
}
/**
* @return A list of the property files containing the build/version info
*/
public static List listGitPropertiesFiles() {
Enumeration roots;
try {
roots = VersionCheck.class.getClassLoader().getResources("ai/skymind/");
} catch (IOException e){
//Should never happen?
log.debug("Error listing resources for version check", e);
return Collections.emptyList();
}
final List out = new ArrayList<>();
while(roots.hasMoreElements()){
URL u = roots.nextElement();
try {
URI uri = u.toURI();
try (FileSystem fileSystem = (uri.getScheme().equals("jar") ? FileSystems.newFileSystem(uri, Collections.emptyMap()) : null)) {
Path myPath = Paths.get(uri);
Files.walkFileTree(myPath, new SimpleFileVisitor() {
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
URI fileUri = file.toUri();
String s = fileUri.toString();
if(s.endsWith(GIT_PROPERTY_FILE_SUFFIX)){
out.add(fileUri);
}
return FileVisitResult.CONTINUE;
}
});
}
} catch (Exception e){
//log and skip
log.debug("Error finding/loading version check resources", e);
}
}
Collections.sort(out); //Equivalent to sorting by groupID and artifactID
return out;
}
/**
* @return A list containing the information for the discovered dependencies
*/
public static List getVersionInfos() {
boolean dl4jFound = false;
boolean datavecFound = false;
List repState = new ArrayList<>();
for(URI s : listGitPropertiesFiles()){
VersionInfo grs;
try{
grs = new VersionInfo(s);
} catch (Exception e){
log.debug("Error reading property files for {}", s);
continue;
}
repState.add(grs);
if(!dl4jFound && DL4J_GROUPID.equalsIgnoreCase(grs.getGroupId()) && DL4J_ARTIFACT.equalsIgnoreCase(grs.getArtifactId())){
dl4jFound = true;
}
if(!datavecFound && DATAVEC_GROUPID.equalsIgnoreCase(grs.getGroupId()) && DATAVEC_ARTIFACT.equalsIgnoreCase(grs.getArtifactId())){
datavecFound = true;
}
}
if(classExists(ND4J_JBLAS_CLASS)){
//nd4j-jblas is ancient and incompatible
log.error("Found incompatible/obsolete backend and version (nd4j-jblas) on classpath. ND4J is unlikely to"
+ " function correctly with nd4j-jblas on the classpath.");
}
if(classExists(CANOVA_CLASS)){
//Canova is anchient and likely to pull in incompatible
log.error("Found incompatible/obsolete library Canova on classpath. ND4J is unlikely to"
+ " function correctly with this library on the classpath.");
}
return repState;
}
private static boolean classExists(String className){
try{
Class.forName(className);
return true;
} catch (ClassNotFoundException e ){
//OK - not found
}
return false;
}
/**
* @return A string representation of the version information, with the default (GAV) detail level
*/
public static String versionInfoString() {
return versionInfoString(Detail.GAV);
}
/**
* Get the version information for dependencies as a string with a specified amount of detail
*
* @param detail Detail level for the version information. See {@link Detail}
* @return Version information, as a String
*/
public static String versionInfoString(Detail detail) {
StringBuilder sb = new StringBuilder();
for(VersionInfo grp : getVersionInfos()){
sb.append(grp.getGroupId()).append(" : ").append(grp.getArtifactId()).append(" : ").append(grp.getBuildVersion());
switch (detail){
case FULL:
case GAVC:
sb.append(" - ").append(grp.getCommitIdAbbrev());
if(detail != Detail.FULL) break;
sb.append("buildTime=").append(grp.getBuildTime()).append("branch=").append(grp.getBranch())
.append("commitMsg=").append(grp.getCommitMessageShort());
}
sb.append("\n");
}
return sb.toString();
}
/**
* Log of the version information with the default level of detail
*/
public static void logVersionInfo(){
logVersionInfo(Detail.GAV);
}
/**
* Log the version information with the specified level of detail
* @param detail Level of detail for logging
*/
public static void logVersionInfo(Detail detail){
List info = getVersionInfos();
for(VersionInfo grp : info){
switch (detail){
case GAV:
log.info("{} : {} : {}", grp.getGroupId(), grp.getArtifactId(), grp.getBuildVersion());
break;
case GAVC:
log.info("{} : {} : {} - {}", grp.getGroupId(), grp.getArtifactId(), grp.getBuildVersion(),
grp.getCommitIdAbbrev());
break;
case FULL:
log.info("{} : {} : {} - {}, buildTime={}, buildHost={} branch={}, commitMsg={}", grp.getGroupId(), grp.getArtifactId(),
grp.getBuildVersion(), grp.getCommitId(), grp.getBuildTime(), grp.getBuildHost(),
grp.getBranch(), grp.getCommitMessageShort());
break;
}
}
}
}
