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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config;
import com.yahoo.config.ConfigInstance;
import com.yahoo.config.codegen.InnerCNode;
import com.yahoo.config.subscription.ConfigInstanceSerializer;
import com.yahoo.config.subscription.ConfigInstanceUtil;
import com.yahoo.io.Utf8ByteWriter;
import com.yahoo.slime.JsonDecoder;
import com.yahoo.slime.JsonFormat;
import com.yahoo.slime.Slime;
import com.yahoo.slime.SlimeFormat;
import com.yahoo.text.AbstractUtf8Array;
import com.yahoo.text.Utf8PartialArray;
import com.yahoo.text.Utf8String;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;
/**
* A config payload.
*
* @author Ulf Lilleengen
*/
public class ConfigPayload {
private final Slime slime;
public ConfigPayload(Slime slime) {
this.slime = slime;
}
public static ConfigPayload fromInstance(ConfigInstance instance) {
Slime slime = new Slime();
ConfigInstanceSerializer serializer = new ConfigInstanceSerializer(slime);
ConfigInstance.serialize(instance, serializer);
return new ConfigPayload(slime);
}
public static ConfigPayload fromBuilder(ConfigPayloadBuilder builder) {
Slime slime = new Slime();
builder.resolve(slime.setObject());
return new ConfigPayload(slime);
}
public Slime getSlime() {
return slime;
}
public void serialize(OutputStream os, SlimeFormat format) throws IOException {
format.encode(os, slime);
}
@Override
public String toString() {
return toString(false);
}
public String toString(boolean compact) {
return toUtf8Array(compact).toString();
}
public ConfigPayload applyDefaultsFromDef(InnerCNode clientDef) {
DefaultValueApplier defaultValueApplier = new DefaultValueApplier();
defaultValueApplier.applyDefaults(slime, clientDef);
return this;
}
public static ConfigPayload empty() {
Slime slime = new Slime();
slime.setObject();
return new ConfigPayload(slime);
}
public static ConfigPayload fromString(String jsonString) {
return fromUtf8Array(new Utf8String(jsonString));
}
public boolean isEmpty() {
return !slime.get().valid() || slime.get().children() == 0;
}
public AbstractUtf8Array toUtf8Array(boolean compact) {
Utf8ByteWriter os = new Utf8ByteWriter(8192);
try {
new JsonFormat(compact).encode(os, slime);
os.close();
} catch (IOException e) {
e.printStackTrace();
}
ByteBuffer buf = os.getBuf();
return new Utf8PartialArray(buf.array(), buf.arrayOffset() + buf.position(), buf.remaining());
}
public static ConfigPayload fromUtf8Array(AbstractUtf8Array payload) {
return new ConfigPayload(new JsonDecoder().decode(new Slime(), payload.wrap()));
}
public <ConfigType extends ConfigInstance> ConfigType toInstance(Class<ConfigType> clazz, String configId) {
return ConfigInstanceUtil.getNewInstance(clazz, configId, this);
}
}
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