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reorganized logic around main resolver conditions

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This commit is contained in:
Mark Wolters 2024-04-10 10:21:02 -04:00 committed by Jonathan Shook
parent ddb8d4d550
commit 59b2502e11
2 changed files with 92 additions and 68 deletions
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4
nb-api/src/main/java/io/nosqlbench/nb/api/nbio/NBIOResolverConditions.java
View File

@ -18,4 +18,8 @@
package io.nosqlbench.nb.api.nbio;
public enum NBIOResolverConditions {
UPDATE_AND_VERIFY,
UPDATE_NO_VERIFY,
LOCAL_VERIFY,
LOCAL_NO_VERIFY
}

156
nb-api/src/main/java/io/nosqlbench/nb/api/nbio/ResolverForNBIOCache.java
View File

@ -75,7 +75,7 @@ public class ResolverForNBIOCache implements ContentResolver {
return null;
}
private boolean downloadFile(URI uri, Path cachePath) {
private boolean downloadFile(URI uri, Path cachePath, URLContent checksum) {
int retries = 0;
boolean success = false;
while (retries < maxRetries) {
@ -85,8 +85,10 @@ public class ResolverForNBIOCache implements ContentResolver {
logger.info(() -> "Downloading remote file " + uri + " to cache at " + cachePath);
Files.copy(urlContent.getInputStream(), cachePath);
logger.info(() -> "Downloaded remote file to cache at " + cachePath);
success = true;
break;
if(checksum != null && verifyChecksum(cachePath, checksum)) {
success = true;
break;
}
} else {
logger.error(() -> "Error downloading remote file to cache at " + cachePath + ", retrying...");
retries++;
@ -99,6 +101,24 @@ public class ResolverForNBIOCache implements ContentResolver {
return success;
}
private boolean verifyChecksum(Path cachePath, URLContent checksum) {
try {
String localChecksumStr = generateSHA256Checksum(cachePath.toString());
Path checksumPath = Path.of(cachePath.toString().substring(0, cachePath.toString().lastIndexOf('.')) + ".sha256");
Files.writeString(checksumPath, localChecksumStr);
logger.debug(() -> "Generated local checksum and saved to cache at " + checksumPath);
String remoteChecksum = new String(checksum.getInputStream().readAllBytes());
if (localChecksumStr.equals(remoteChecksum)) {
return true;
} else {
logger.warn(() -> "checksums do not match for " + checksumPath + " and " + checksum);
return false;
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* This method is used to download a file from a remote URL and store it in a local cache.
* It first creates the cache directory if it doesn't exist.
@ -114,35 +134,11 @@ public class ResolverForNBIOCache implements ContentResolver {
private Path pathFromRemoteUrl(URI uri) {
Path cachePath = Path.of(cacheDir + uri.getPath());
createCacheDir(cachePath);
if (downloadFile(uri, cachePath)) {
String remoteChecksumFileStr = uri.getPath().substring(0, uri.getPath().indexOf('.')) + ".sha256";
try {
String localChecksumStr = generateSHA256Checksum(cachePath.toString());
URLContent checksum = resolveURI(URI.create(uri.toString().replace(uri.getPath(), remoteChecksumFileStr)));
if (checksum == null) {
logger.warn(() -> "Remote checksum file " + remoteChecksumFileStr + " does not exist");
return cachePath;
} else {
Path checksumPath = Path.of(cachePath.toString().substring(0, cachePath.toString().lastIndexOf('.')) + ".sha256");
Files.writeString(checksumPath, localChecksumStr);
logger.debug(() -> "Generated local checksum and saved to cache at " + checksumPath);
String remoteChecksum = new String(checksum.getInputStream().readAllBytes());
if (localChecksumStr.equals(remoteChecksum)) {
return cachePath;
} else {
if (!cachePath.toFile().delete())
logger.warn(() -> "Could not delete cached file " + cachePath);
if (!checksumPath.toFile().delete())
logger.warn(() -> "Could not delete cached checksum " + checksumPath);
throw new RuntimeException("Checksums do not match");
}
}
} catch (Exception e) {
throw new RuntimeException(e);
}
} else {
cleanupCache(cachePath);
throw new RuntimeException("Error downloading remote file to cache at " + cachePath);
if (!verifyChecksum) {
return execute(NBIOResolverConditions.UPDATE_NO_VERIFY, cachePath, uri);
}
else {
return execute(NBIOResolverConditions.UPDATE_AND_VERIFY, cachePath, uri);
}
}
@ -165,6 +161,51 @@ public class ResolverForNBIOCache implements ContentResolver {
logger.warn(() -> "Could not delete cached checksum " + checksumPath);
}
private Path execute(NBIOResolverConditions condition, Path cachePath, URI uri) {
String remoteChecksumFileStr = uri.getPath().substring(0, uri.getPath().indexOf('.')) + ".sha256";
URLContent checksum = resolveURI(URI.create(uri.toString().replace(uri.getPath(), remoteChecksumFileStr)));
switch(condition) {
case UPDATE_AND_VERIFY:
if (checksum == null) {
logger.warn(() -> "Remote checksum file " + remoteChecksumFileStr + " does not exist. Proceeding without verification");
}
if (downloadFile(uri, cachePath, checksum)) {
return cachePath;
} else {
throw new RuntimeException("Error downloading remote file to cache at " + cachePath);
}
case UPDATE_NO_VERIFY:
logger.warn(() -> "Checksum verification is disabled, downloading remote file to cache at " + cachePath);
if (downloadFile(uri, cachePath, null)) {
return cachePath;
} else {
throw new RuntimeException("Error downloading remote file to cache at " + cachePath);
}
case LOCAL_VERIFY:
if (checksum == null) {
logger.warn(() -> "Remote checksum file does not exist, returning cached file " + cachePath);
return cachePath;
}
try {
String localChecksum = Files.readString(getOrCreateChecksum(cachePath));
String remoteChecksum = new String(checksum.getInputStream().readAllBytes());
if (localChecksum.equals(remoteChecksum)) {
return cachePath;
}
else {
logger.warn(() -> "Checksums do not match, rehydrating cache " + cachePath);
return pathFromRemoteUrl(uri);
}
} catch (IOException e) {
throw new RuntimeException(e);
}
case LOCAL_NO_VERIFY:
return cachePath;
default:
throw new RuntimeException("Invalid NBIO Cache condition");
}
}
/**
* This method is used to retrieve a file from the local cache.
* It first checks if the file exists in the cache and if a checksum file is present.
@ -181,6 +222,20 @@ public class ResolverForNBIOCache implements ContentResolver {
* @throws RuntimeException if there was an error during the checksum comparison or if the checksums don't match
*/
private Path pathFromLocalCache(Path cachePath, URI uri) {
if (forceUpdate) {
return pathFromRemoteUrl(uri);
}
if (!verifyChecksum) {
logger.warn(() -> "Checksum verification is disabled, returning cached file " + cachePath);
return execute(NBIOResolverConditions.LOCAL_NO_VERIFY, cachePath, uri);
} else {
return execute(NBIOResolverConditions.LOCAL_VERIFY, cachePath, uri);
}
}
private Path getOrCreateChecksum(Path cachePath) {
Path checksumPath = Path.of(cachePath.toString().substring(0, cachePath.toString().lastIndexOf('.')) + ".sha256");
if (!Files.isReadable(checksumPath)) {
try {
@ -189,42 +244,7 @@ public class ResolverForNBIOCache implements ContentResolver {
throw new RuntimeException(e);
}
}
if (forceUpdate) {
if (!cachePath.toFile().delete())
logger.warn(() -> "Could not delete cached file " + cachePath);
if (!checksumPath.toFile().delete())
logger.warn(() -> "Could not delete cached checksum " + checksumPath);
return pathFromRemoteUrl(uri);
}
if (!verifyChecksum) {
logger.warn(() -> "Checksum verification is disabled, returning cached file " + cachePath);
return cachePath;
}
URLContent content = resolveURI(uri);
if (content == null) {
logger.warn(() -> "Remote file does not exist, returning cached file " + cachePath);
return cachePath;
}
String remoteChecksumFileStr = uri.getPath().substring(0, uri.getPath().indexOf('.')) + ".sha256";
URLContent checksum = resolveURI(URI.create(uri.toString().replace(uri.getPath(), remoteChecksumFileStr)));
if (checksum == null) {
logger.warn(() -> "Remote checksum file does not exist, returning cached file " + cachePath);
return cachePath;
}
try {
String localChecksum = Files.readString(checksumPath);
String remoteChecksum = new String(checksum.getInputStream().readAllBytes());
if (localChecksum.equals(remoteChecksum)) {
return cachePath;
}
else {
if (!cachePath.toFile().delete())
logger.warn(() -> "Could not delete cached file " + cachePath);
return pathFromRemoteUrl(uri);
}
} catch (IOException e) {
throw new RuntimeException(e);
}
return checksumPath;
}
private static String generateSHA256Checksum(String filePath) throws IOException, NoSuchAlgorithmException {