Class InMemoryArtifactService

java.lang.Object

com.google.adk.artifacts.InMemoryArtifactService

All Implemented Interfaces:

BaseArtifactService

public final class InMemoryArtifactService
extends Object
implements BaseArtifactService

An in-memory implementation of the BaseArtifactService.

Constructor Summary

Constructors

Constructor	Description
InMemoryArtifactService()

Method Summary

Modifier and Type	Method	Description
io.reactivex.rxjava3.core.Completable	deleteArtifact(String appName, String userId, String sessionId, String filename)	Deletes all versions of the given artifact.
io.reactivex.rxjava3.core.Single<ListArtifactsResponse>	listArtifactKeys(String appName, String userId, String sessionId)	Lists filenames of stored artifacts for the session.
io.reactivex.rxjava3.core.Single<com.google.common.collect.ImmutableList<Integer>>	listVersions(String appName, String userId, String sessionId, String filename)	Lists all versions of the specified artifact.
io.reactivex.rxjava3.core.Maybe<com.google.genai.types.Part>	loadArtifact(String appName, String userId, String sessionId, String filename, @Nullable Integer version)	Loads an artifact by version or latest.
io.reactivex.rxjava3.core.Single<com.google.genai.types.Part>	saveAndReloadArtifact(String appName, String userId, String sessionId, String filename, com.google.genai.types.Part artifact)	Saves an artifact and returns it with fileData if available.
io.reactivex.rxjava3.core.Single<Integer>	saveArtifact(String appName, String userId, String sessionId, String filename, com.google.genai.types.Part artifact)	Saves an artifact in memory and assigns a new version.

Methods inherited from class Object

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

Methods inherited from interface BaseArtifactService

deleteArtifact, listArtifactKeys, listVersions, loadArtifact, loadArtifact, loadArtifact, loadArtifact, saveAndReloadArtifact, saveArtifact

Modifier and Type	Method	Description
default io.reactivex.rxjava3.core.Completable	deleteArtifact(SessionKey sessionKey, String filename)
default io.reactivex.rxjava3.core.Single<ListArtifactsResponse>	listArtifactKeys(SessionKey sessionKey)
default io.reactivex.rxjava3.core.Single<com.google.common.collect.ImmutableList<Integer>>	listVersions(SessionKey sessionKey, String filename)
default io.reactivex.rxjava3.core.Maybe<com.google.genai.types.Part>	loadArtifact(SessionKey sessionKey, String filename)	Loads the latest version of an artifact from the service.
default io.reactivex.rxjava3.core.Maybe<com.google.genai.types.Part>	loadArtifact(SessionKey sessionKey, String filename, int version)
default io.reactivex.rxjava3.core.Maybe<com.google.genai.types.Part>	loadArtifact(String appName, String userId, String sessionId, String filename)	Loads the latest version of an artifact from the service.
default io.reactivex.rxjava3.core.Maybe<com.google.genai.types.Part>	loadArtifact(String appName, String userId, String sessionId, String filename, int version)	Loads a specific version of an artifact from the service.
default io.reactivex.rxjava3.core.Single<com.google.genai.types.Part>	saveAndReloadArtifact(SessionKey sessionKey, String filename, com.google.genai.types.Part artifact)	Saves an artifact and returns it with fileData if available.
default io.reactivex.rxjava3.core.Single<Integer>	saveArtifact(SessionKey sessionKey, String filename, com.google.genai.types.Part artifact)	Saves an artifact.

Constructor Details

InMemoryArtifactService

public InMemoryArtifactService()

Method Details

saveArtifact

public io.reactivex.rxjava3.core.Single<Integer> saveArtifact(String appName,
 String userId,
 String sessionId,
 String filename,
 com.google.genai.types.Part artifact)

Saves an artifact in memory and assigns a new version.

Specified by:

saveArtifact in interface BaseArtifactService

Parameters:

appName - the app name

userId - the user ID

sessionId - the session ID

filename - the filename

artifact - the artifact

Returns:

Single with assigned version number.

loadArtifact

public io.reactivex.rxjava3.core.Maybe<com.google.genai.types.Part> loadArtifact(String appName,
 String userId,
 String sessionId,
 String filename,
 @Nullable Integer version)

Loads an artifact by version or latest.

Specified by:

loadArtifact in interface BaseArtifactService

Returns:

Maybe with the artifact, or empty if not found.

listArtifactKeys

public io.reactivex.rxjava3.core.Single<ListArtifactsResponse> listArtifactKeys(String appName,
 String userId,
 String sessionId)

Lists filenames of stored artifacts for the session.

Specified by:

listArtifactKeys in interface BaseArtifactService

Parameters:

appName - the app name

userId - the user ID

sessionId - the session ID

Returns:

Single with list of artifact filenames.

deleteArtifact

public io.reactivex.rxjava3.core.Completable deleteArtifact(String appName,
 String userId,
 String sessionId,
 String filename)

Deletes all versions of the given artifact.

Specified by:

deleteArtifact in interface BaseArtifactService

Parameters:

appName - the app name

userId - the user ID

sessionId - the session ID

filename - the filename

Returns:

Completable indicating completion.

listVersions

public io.reactivex.rxjava3.core.Single<com.google.common.collect.ImmutableList<Integer>> listVersions(String appName,
 String userId,
 String sessionId,
 String filename)

Lists all versions of the specified artifact.

Specified by:

listVersions in interface BaseArtifactService

Parameters:

appName - the app name

userId - the user ID

sessionId - the session ID

filename - the artifact filename

Returns:

Single with list of version numbers.

saveAndReloadArtifact

public io.reactivex.rxjava3.core.Single<com.google.genai.types.Part> saveAndReloadArtifact(String appName,
 String userId,
 String sessionId,
 String filename,
 com.google.genai.types.Part artifact)

Description copied from interface: BaseArtifactService

Saves an artifact and returns it with fileData if available.

Implementations should override this default method for efficiency, as the default performs two I/O operations (save then load).

Specified by:

saveAndReloadArtifact in interface BaseArtifactService

Parameters:

appName - the app name

userId - the user ID

sessionId - the session ID

filename - the filename

artifact - the artifact to save

Returns:

the saved artifact with fileData if available.