Re: [libvirt] [PATCH libvirt-java 1/2] Return a byte[] array with secretGetValue

We break the API with this, but Java does not support multiple method signatures with different return types. The old method returned a String, but since a secret can be binary data this type is not suited. Users who now that their secret is in fact a String, can use cast with:

Secret secret = conn.secretLookupByUUIDString("uuuuuuuid"); String value = new String(secret.getValue()); Signed-off-by: Wido den Hollander <wido(a)widodh.nl&gt; --- src/main/java/org/libvirt/Secret.java | 13 ++++++++++--- src/main/java/org/libvirt/jna/Libvirt.java | 2 +- 2 files changed, 11 insertions(+), 4 deletions(-) diff --git a/src/main/java/org/libvirt/Secret.java b/src/main/java/org/libvirt/Secret.java index 48f7895..39d9122 100644 --- a/src/main/java/org/libvirt/Secret.java +++ b/src/main/java/org/libvirt/Secret.java @@ -5,6 +5,9 @@ import org.libvirt.jna.SecretPointer; import com.sun.jna.Native; import com.sun.jna.NativeLong; +import com.sun.jna.ptr.LongByReference; +import com.sun.jna.Pointer; +import java.nio.ByteBuffer; /** * A secret defined by libvirt @@ -106,12 +109,16 @@ public class Secret { /** * Fetches the value of the secret - * + * * @return the value of the secret, or null on failure. */ - public String getValue() throws LibvirtException { - String returnValue = libvirt.virSecretGetValue(VSP, new NativeLong(), 0); + public byte[] getValue() throws LibvirtException { + LongByReference value_size = new LongByReference(); + Pointer value = libvirt.virSecretGetValue(VSP, value_size, 0); processError(); + ByteBuffer bb = value.getByteBuffer(0, value_size.getValue()); + byte[] returnValue = new byte[bb.remaining()]; + bb.get(returnValue); return returnValue; } diff --git a/src/main/java/org/libvirt/jna/Libvirt.java b/src/main/java/org/libvirt/jna/Libvirt.java index b1e53a2..f53199d 100644 --- a/src/main/java/org/libvirt/jna/Libvirt.java +++ b/src/main/java/org/libvirt/jna/Libvirt.java @@ -330,7 +330,7 @@ public interface Libvirt extends Library { public int virSecretGetUUID(SecretPointer virSecretPtr, byte[] uuidString); public int virSecretGetUUIDString(SecretPointer virSecretPtr, byte[] uuidString); public String virSecretGetUsageID(SecretPointer virSecretPtr); - public String virSecretGetValue(SecretPointer virSecretPtr, NativeLong value_size, int flags); + public Pointer virSecretGetValue(SecretPointer virSecretPtr, LongByReference value_size, int flags); public String virSecretGetXMLDesc(SecretPointer virSecretPtr, int flags); public SecretPointer virSecretLookupByUsage(ConnectionPointer virConnectPtr, int usageType, String usageID); public SecretPointer virSecretLookupByUUID(ConnectionPointer virConnectPtr, byte[] uuidBytes);