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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.hosted.controller.persistence;
import com.yahoo.config.provision.CloudAccount;
import com.yahoo.config.provision.TenantName;
import com.yahoo.slime.Cursor;
import com.yahoo.slime.Inspector;
import com.yahoo.slime.Slime;
import com.yahoo.slime.SlimeUtils;
import com.yahoo.vespa.hosted.controller.api.integration.archive.ArchiveBuckets;
import com.yahoo.vespa.hosted.controller.api.integration.archive.TenantManagedArchiveBucket;
import com.yahoo.vespa.hosted.controller.api.integration.archive.VespaManagedArchiveBucket;
import java.util.Set;
import java.util.stream.Collectors;
/**
* (de)serializes tenant/bucket mappings for a zone
*
* @author andreer
*/
public class ArchiveBucketsSerializer {
// WARNING: Since there are multiple servers in a ZooKeeper cluster and they upgrade one by one
// (and rewrite all nodes on startup), changes to the serialized format must be made
// such that what is serialized on version N+1 can be read by version N:
// - ADDING FIELDS: Always ok
// - REMOVING FIELDS: Stop reading the field first. Stop writing it on a later version.
// - CHANGING THE FORMAT OF A FIELD: Don't do it bro.
private final static String vespaManagedBucketsFieldName = "buckets";
private final static String tenantManagedBucketsFieldName = "tenantManagedBuckets";
private final static String bucketNameFieldName = "bucketName";
private final static String keyArnFieldName = "keyArn";
private final static String tenantsFieldName = "tenantIds";
private final static String accountFieldName = "account";
private final static String updatedAtFieldName = "updatedAt";
public static Slime toSlime(ArchiveBuckets archiveBuckets) {
Slime slime = new Slime();
Cursor rootObject = slime.setObject();
Cursor vespaBucketsArray = rootObject.setArray(vespaManagedBucketsFieldName);
archiveBuckets.vespaManaged().forEach(bucket -> {
Cursor cursor = vespaBucketsArray.addObject();
cursor.setString(bucketNameFieldName, bucket.bucketName());
cursor.setString(keyArnFieldName, bucket.keyArn());
Cursor tenants = cursor.setArray(tenantsFieldName);
bucket.tenants().forEach(tenantName -> tenants.addString(tenantName.value()));
});
Cursor tenantBucketsArray = rootObject.setArray(tenantManagedBucketsFieldName);
archiveBuckets.tenantManaged().forEach(bucket -> {
Cursor cursor = tenantBucketsArray.addObject();
cursor.setString(bucketNameFieldName, bucket.bucketName());
cursor.setString(accountFieldName, bucket.cloudAccount().value());
cursor.setLong(updatedAtFieldName, bucket.updatedAt().toEpochMilli());
});
return slime;
}
public static ArchiveBuckets fromSlime(Slime slime) {
Inspector inspector = slime.get();
return new ArchiveBuckets(
SlimeUtils.entriesStream(inspector.field(vespaManagedBucketsFieldName))
.map(ArchiveBucketsSerializer::vespaManagedArchiveBucketFromInspector)
.collect(Collectors.toUnmodifiableSet()),
SlimeUtils.entriesStream(inspector.field(tenantManagedBucketsFieldName))
.map(ArchiveBucketsSerializer::tenantManagedArchiveBucketFromInspector)
.collect(Collectors.toUnmodifiableSet()));
}
private static VespaManagedArchiveBucket vespaManagedArchiveBucketFromInspector(Inspector inspector) {
Set<TenantName> tenants = SlimeUtils.entriesStream(inspector.field(tenantsFieldName))
.map(i -> TenantName.from(i.asString()))
.collect(Collectors.toUnmodifiableSet());
return new VespaManagedArchiveBucket(
inspector.field(bucketNameFieldName).asString(),
inspector.field(keyArnFieldName).asString())
.withTenants(tenants);
}
private static TenantManagedArchiveBucket tenantManagedArchiveBucketFromInspector(Inspector inspector) {
return new TenantManagedArchiveBucket(
inspector.field(bucketNameFieldName).asString(),
CloudAccount.from(inspector.field(accountFieldName).asString()),
SlimeUtils.instant(inspector.field(updatedAtFieldName)));
}
}
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