Package org.openrewrite.maven.cache

Class RocksdbMavenPomCache

java.lang.Object

org.openrewrite.maven.cache.RocksdbMavenPomCache

All Implemented Interfaces:

MavenPomCache

public class RocksdbMavenPomCache
extends Object
implements MavenPomCache

Implementation of the maven cache that leverages Rocksdb. The keys and values are serialized to/from byte arrays using jackson. Things to know about this cache implementation:

It will create a rocks db in the workspace directory passed to it.

If two caches are pointed to the same workspace folder, they will "share" the same underlying rocks database, it is thread-safe.

Because multiple caches can share the same database, the close on this cache implementation does nothing.

The database is closed via a system shutdown hook registered by this class. Any unexpected process termination is non-fatal, any non-flushed data is lost, but the database will not be corrupted.

The database is configured to auto-flush when the in-memory size reaches 1MB.

Rocksdb's write ahead log has been disabled because we are using this as a cache and do not need to recover any "lost" data.

Rocksdb computes checksums for all of its files, normally it checks those on startup, this has been disabled as well.

Constructor Summary

Constructors

Constructor	Description
RocksdbMavenPomCache(Path workspace)

Method Summary

Modifier and Type	Method	Description
@Nullable Optional<MavenMetadata>	getMavenMetadata(URI repo, GroupArtifactVersion gav)
@Nullable Optional<MavenRepository>	getNormalizedRepository(MavenRepository repository)
Optional<Pom>	getPom(ResolvedGroupArtifactVersion gav)
@Nullable ResolvedPom	getResolvedDependencyPom(ResolvedGroupArtifactVersion dependency)
void	putMavenMetadata(URI repo, GroupArtifactVersion gav, @Nullable MavenMetadata metadata)
void	putNormalizedRepository(MavenRepository repository, MavenRepository normalized)
void	putPom(ResolvedGroupArtifactVersion gav, Pom pom)
void	putResolvedDependencyPom(ResolvedGroupArtifactVersion dependency, ResolvedPom resolved)

Methods inherited from class java.lang.Object

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

Constructor Details

RocksdbMavenPomCache

public RocksdbMavenPomCache(Path workspace)

Method Details

getResolvedDependencyPom

@Nullable
public @Nullable ResolvedPom getResolvedDependencyPom(ResolvedGroupArtifactVersion dependency)

Specified by:

getResolvedDependencyPom in interface MavenPomCache

putResolvedDependencyPom

public void putResolvedDependencyPom(ResolvedGroupArtifactVersion dependency,
 ResolvedPom resolved)

Specified by:

putResolvedDependencyPom in interface MavenPomCache

getMavenMetadata

@Nullable
public @Nullable Optional<MavenMetadata> getMavenMetadata(URI repo,
 GroupArtifactVersion gav)

Specified by:

getMavenMetadata in interface MavenPomCache

putMavenMetadata

public void putMavenMetadata(URI repo,
 GroupArtifactVersion gav,
 @Nullable
 @Nullable MavenMetadata metadata)

Specified by:

putMavenMetadata in interface MavenPomCache

getPom

public Optional<Pom> getPom(ResolvedGroupArtifactVersion gav)
                     throws MavenDownloadingException

Specified by:

getPom in interface MavenPomCache

Throws:

MavenDownloadingException

putPom

public void putPom(ResolvedGroupArtifactVersion gav,
 Pom pom)

Specified by:

putPom in interface MavenPomCache

getNormalizedRepository

@Nullable
public @Nullable Optional<MavenRepository> getNormalizedRepository(MavenRepository repository)

Specified by:

getNormalizedRepository in interface MavenPomCache

putNormalizedRepository

public void putNormalizedRepository(MavenRepository repository,
 MavenRepository normalized)

Specified by:

putNormalizedRepository in interface MavenPomCache