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// Copyright Yahoo. 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.text.Utf8String;
import com.yahoo.vespa.config.protocol.CompressionInfo;
import com.yahoo.vespa.config.protocol.JRTClientConfigRequest;
import com.yahoo.vespa.config.protocol.JRTConfigRequest;
import com.yahoo.vespa.config.protocol.JRTServerConfigRequest;
import com.yahoo.vespa.config.protocol.Payload;
import com.yahoo.vespa.config.protocol.VespaVersion;
import com.yahoo.vespa.config.util.ConfigUtils;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
/**
* Encapsulates config, usually associated with a {@link JRTConfigRequest}. An instance of this class can represent
* either a config that is not yet resolved, a successfully resolved config, or an error.
*
* @author hmusum
*/
public class RawConfig extends ConfigInstance {
private final ConfigKey<?> key;
private final String defMd5;
private final List<String> defContent;
private final Payload payload;
private final int errorCode;
private final PayloadChecksums payloadChecksums;
private final Optional<VespaVersion> vespaVersion;
private long generation;
private boolean applyOnRestart;
/**
* Constructor for an empty config (not yet resolved).
*
* @param key The ConfigKey
* @param defMd5 The md5 sum of the .def-file.
*/
public RawConfig(ConfigKey<?> key, String defMd5) {
this(key, defMd5, null, PayloadChecksums.empty(), 0L, false, 0, Collections.emptyList(), Optional.empty());
}
public RawConfig(ConfigKey<?> key, String defMd5, Payload payload, PayloadChecksums payloadChecksums, long generation,
boolean applyOnRestart, List<String> defContent, Optional<VespaVersion> vespaVersion) {
this(key, defMd5, payload, payloadChecksums, generation, applyOnRestart, 0, defContent, vespaVersion);
}
/** Copy constructor */
public RawConfig(RawConfig rawConfig) {
this(rawConfig.key, rawConfig.defMd5, rawConfig.payload, rawConfig.payloadChecksums,
rawConfig.generation, rawConfig.applyOnRestart,
rawConfig.errorCode, rawConfig.defContent, rawConfig.getVespaVersion());
}
public RawConfig(ConfigKey<?> key, String defMd5, Payload payload, PayloadChecksums payloadChecksums, long generation,
boolean applyOnRestart, int errorCode, List<String> defContent,
Optional<VespaVersion> vespaVersion) {
this.key = key;
this.defMd5 = ConfigUtils.getDefMd5FromRequest(defMd5, defContent);
this.payload = payload;
this.payloadChecksums = payloadChecksums;
this.generation = generation;
this.applyOnRestart = applyOnRestart;
this.errorCode = errorCode;
this.defContent = defContent;
this.vespaVersion = vespaVersion;
}
/**
* Creates a new Config from the given request, with the values in the response parameters.
*
* @param req a {@link JRTClientConfigRequest}
*/
public static RawConfig createFromResponseParameters(JRTClientConfigRequest req) {
return new RawConfig(req.getConfigKey(),
ConfigUtils.getDefMd5(req.getDefContent().asList()),
req.getNewPayload(),
req.getNewChecksums(),
req.getNewGeneration(),
req.responseIsApplyOnRestart(),
0,
req.getDefContent().asList(),
req.getVespaVersion());
}
/**
* Creates a new Config from the given request, with the values in the response parameters.
*
* @param req a {@link JRTClientConfigRequest}
*/
public static RawConfig createFromServerRequest(JRTServerConfigRequest req) {
return new RawConfig(req.getConfigKey(),
ConfigUtils.getDefMd5(req.getDefContent().asList()),
Payload.from(new Utf8String(""), CompressionInfo.uncompressed()),
req.getRequestConfigChecksums(),
req.getRequestGeneration(),
req.applyOnRestart(),
0,
req.getDefContent().asList(),
req.getVespaVersion());
}
public ConfigKey<?> getKey() { return key; }
public String getName() { return key.getName(); }
public String getNamespace() { return key.getNamespace(); }
public String getConfigId() { return key.getConfigId(); }
public String getDefMd5() { return defMd5; }
public long getGeneration() { return generation; }
public void setGeneration(long generation) { this.generation = generation; }
public void setApplyOnRestart(boolean applyOnRestart) { this.applyOnRestart = applyOnRestart; }
public boolean applyOnRestart() { return applyOnRestart; }
public Payload getPayload() { return payload; }
public int errorCode() { return errorCode; }
public String getDefNamespace() { return key.getNamespace(); }
public Optional<VespaVersion> getVespaVersion() { return vespaVersion; }
public PayloadChecksums getPayloadChecksums() { return payloadChecksums; }
/**
* Returns true if this config is equal to the config (same payload md5) in the given request.
*
* @param req the request for which to compare config payload with this config.
* @return true if this config is equal to the config in the given request.
*/
public boolean hasEqualConfig(JRTServerConfigRequest req) {
PayloadChecksums payloadChecksums = getPayloadChecksums();
PayloadChecksum xxhash64 = payloadChecksums.getForType(PayloadChecksum.Type.XXHASH64);
PayloadChecksum md5 = payloadChecksums.getForType(PayloadChecksum.Type.MD5);
if (xxhash64 != null)
return xxhash64.equals(req.getRequestConfigChecksums().getForType(PayloadChecksum.Type.XXHASH64));
if (md5 != null)
return md5.equals(req.getRequestConfigChecksums().getForType(PayloadChecksum.Type.MD5));
return true;
}
/**
* Returns true if this config has a more recent generation than the config in the given request.
*
* @param req the request for which to compare generation with this config.
* @return true if this config has a more recent generation than the config in the given request.
*/
public boolean hasNewerGeneration(JRTServerConfigRequest req) {
return (getGeneration() > req.getRequestGeneration());
}
/**
* Convenience method.
* @return true if errorCode() returns 0, false otherwise.
*/
public boolean isError() {
return (errorCode() != 0);
}
@Override
public boolean equals(Object o) {
if (o == this) return true;
if (! (o instanceof RawConfig)) return false;
RawConfig other = (RawConfig) o;
if (! (key.equals(other.key) && defMd5.equals(other.defMd5) && (errorCode == other.errorCode)) )
return false;
// Need to check error codes before isError, since unequal error codes always means unequal requests,
// while non-zero and equal error codes means configs are equal.
if (isError()) return true;
if (generation != other.generation) return false;
return (payloadChecksums.equals(((RawConfig) o).payloadChecksums));
}
@Override
public int hashCode() {
int hash = 17;
if (key != null) {
hash = 31 * hash + key.hashCode();
}
if (defMd5 != null) {
hash = 31 * hash + defMd5.hashCode();
}
hash = 31 * hash + errorCode;
if (! isError()) {
// checksum and generation only matter when the RawConfig is not an error.
hash = 31 * hash + (int)(generation ^(generation >>>32));
hash = 31 * hash + payloadChecksums.hashCode();
}
return hash;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(key.getNamespace()).append(".").append(key.getName());
sb.append(",");
sb.append(getDefMd5());
sb.append(",");
sb.append(key.getConfigId());
sb.append(",");
sb.append(payloadChecksums);
sb.append(",");
sb.append(getGeneration());
sb.append(",");
sb.append(getPayload());
return sb.toString();
}
public List<String> getDefContent() {
return defContent;
}
}
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