/// <summary>
/// Gets the indices that are mapped to an alias.
/// </summary>
/// <param name="alias"></param>
public string[] GetIndicesForAlias()
{
if (_client.AliasExists(aed => aed.Name(this._config.AliasName)).Exists)
{
//Soo, if we ask for alias where the index name is that alias,
//then it is like we asked for host/<alias>/_aliases and then
//it will return only those indices mapped to that alias.
var response = _client.GetAlias(ga =>
ga
.Index(_config.AliasName)
);
if (!response.IsValid)
{
throw new Exception("Error getting Indices for alias: " + this._config.AliasName, response.OriginalException);
}
else
{
return(response.Indices.Keys.ToArray());
}
}
else
{
return(new string[] { });
}
}
public IExistsResponse AliasExists(Func <AliasExistsDescriptor, IAliasExistsRequest> selector, string callerName = "")
{
var timer = Stopwatch.StartNew();
var result = _client.AliasExists(selector);
SendLog(result.ApiCall, null, timer.ElapsedMilliseconds, $"Alias Exists {callerName}");
return(result);
}
public virtual void ConfigureIndexes(IElasticClient client, IEnumerable<IElasticIndex> indexes = null) {
if (indexes == null)
indexes = GetIndexes();
foreach (var idx in indexes) {
int currentVersion = GetAliasVersion(client, idx.AliasName);
IIndicesOperationResponse response = null;
var templatedIndex = idx as ITemplatedElasticIndex;
if (templatedIndex != null)
response = client.PutTemplate(idx.VersionedName, template => templatedIndex.CreateTemplate(template).AddAlias(idx.AliasName));
else if (!client.IndexExists(idx.VersionedName).Exists)
response = client.CreateIndex(idx.VersionedName, descriptor => idx.CreateIndex(descriptor).AddAlias(idx.AliasName));
Debug.Assert(response == null || response.IsValid, response?.ServerError != null ? response.ServerError.Error : "An error occurred creating the index or template.");
// Add existing indexes to the alias.
if (!client.AliasExists(idx.AliasName).Exists) {
if (templatedIndex != null) {
var indices = client.IndicesStats().Indices.Where(kvp => kvp.Key.StartsWith(idx.VersionedName)).Select(kvp => kvp.Key).ToList();
if (indices.Count > 0) {
var descriptor = new AliasDescriptor();
foreach (string name in indices)
descriptor.Add(add => add.Index(name).Alias(idx.AliasName));
response = client.Alias(descriptor);
}
} else {
response = client.Alias(a => a.Add(add => add.Index(idx.VersionedName).Alias(idx.AliasName)));
}
Debug.Assert(response != null && response.IsValid, response?.ServerError != null ? response.ServerError.Error : "An error occurred creating the alias.");
}
// already on current version
if (currentVersion >= idx.Version || currentVersion < 1)
continue;
var reindexWorkItem = new ReindexWorkItem {
OldIndex = String.Concat(idx.AliasName, "-v", currentVersion),
NewIndex = idx.VersionedName,
Alias = idx.AliasName,
DeleteOld = true,
ParentMaps = idx.GetIndexTypes()
.Select(kvp => new ParentMap {Type = kvp.Value.Name, ParentPath = kvp.Value.ParentPath})
.Where(m => !String.IsNullOrEmpty(m.ParentPath))
.ToList()
};
bool isReindexing = _lockProvider.IsLockedAsync(String.Concat("reindex:", reindexWorkItem.Alias, reindexWorkItem.OldIndex, reindexWorkItem.NewIndex)).Result;
// already reindexing
if (isReindexing)
continue;
// enqueue reindex to new version
_lockProvider.TryUsingAsync("enqueue-reindex", () => _workItemQueue.EnqueueAsync(reindexWorkItem), TimeSpan.Zero, CancellationToken.None).Wait();
}
}
public void ConfigureIndexes(IElasticClient client) {
foreach (var index in GetIndexes()) {
IIndicesOperationResponse response = null;
int currentVersion = GetAliasVersion(client, index.Name);
var templatedIndex = index as ITemplatedElasticSeachIndex;
if (templatedIndex != null)
response = client.PutTemplate(index.VersionedName, template => templatedIndex.CreateTemplate(template).AddAlias(index.Name));
else if (!client.IndexExists(index.VersionedName).Exists)
response = client.CreateIndex(index.VersionedName, descriptor => index.CreateIndex(descriptor).AddAlias(index.Name));
Debug.Assert(response == null || response.IsValid, response?.ServerError != null ? response.ServerError.Error : "An error occurred creating the index or template.");
// Add existing indexes to the alias.
if (!client.AliasExists(index.Name).Exists) {
if (templatedIndex != null) {
var indices = client.IndicesStats().Indices.Where(kvp => kvp.Key.StartsWith(index.VersionedName)).Select(kvp => kvp.Key).ToList();
if (indices.Count > 0) {
var descriptor = new AliasDescriptor();
foreach (string name in indices)
descriptor.Add(add => add.Index(name).Alias(index.Name));
response = client.Alias(descriptor);
}
} else {
response = client.Alias(a => a.Add(add => add.Index(index.VersionedName).Alias(index.Name)));
}
Debug.Assert(response != null && response.IsValid, response?.ServerError != null ? response.ServerError.Error : "An error occurred creating the alias.");
}
// already on current version
if (currentVersion >= index.Version || currentVersion < 1)
continue;
// upgrade
_lockProvider.TryUsingAsync("reindex", async () => {
await _workItemQueue.EnqueueAsync(new ReindexWorkItem {
OldIndex = String.Concat(index.Name, "-v", currentVersion),
NewIndex = index.VersionedName,
Alias = index.Name,
DeleteOld = true
});
}, TimeSpan.Zero, CancellationToken.None);
}
}
private static void EnsureExpectedAliasesExist(IElasticClient client, IEnumerable <string> expectedAliasNames)
{
var missingAliasNames = expectedAliasNames
.Where(aliasName => !(client.AliasExists(aliasName).Exists || client.IndexExists(aliasName).Exists))
.ToList();
if (missingAliasNames.Count == 0)
{
return;
}
var message = string.Format(
"Failed to find {0} Elasticsearch alias(es): \"{1}\".",
missingAliasNames.Count, ToCommaSeparatedString(missingAliasNames));
throw new Exception(message);
}
/// <summary>
/// 重建索引
/// </summary>
/// <param name="client"></param>
/// <param name="oldIndexName">就索引名字</param>
/// <param name="newIndexName">新索引名字</param>
/// <param name="shardsNumber"></param>
/// <returns></returns>
public static bool ReIndex <T>(IElasticClient client, string oldIndexName, string newIndexName, int shardsNumber = 1) where T : class
{
//检查新索引别名
var alias = client.AliasExists($"{newIndexName}-reindex");
//如果改别名不存在
if (!alias.Exists)
{
//检查是否存在新索引
IExistsResponse newIndex = client.IndexExists(newIndexName);
client.UpdateIndexSettings(Indices.Index(newIndexName), setting => setting.IndexSettings(isetting => isetting.Setting("max_result_window", 100000)));
//如果新索引不存在则创建一个新索引，需要修改各项创建索引时才需要的参数则在这处理
if (!newIndex.Exists)
{
CreateIndexDescriptor createIndex = new CreateIndexDescriptor(newIndexName)
.Settings(s => s.NumberOfShards(shardsNumber).Analysis(a => a.Analyzers(aa => aa.Language("standard_listing", sa => sa.Language(Language.Chinese)))))
.Mappings(ms => ms.Map <T>(m => m.AutoMap()));
ICreateIndexResponse create = client.CreateIndex(createIndex);
Console.WriteLine($"{newIndexName}索引创建：{create.ApiCall.Success}");
//给新创建的索引添加一个索引别名表示时重新创建的
var r2 = client.Alias(t => t.Add(a => a.Index(newIndexName).Alias($"{newIndexName}-reindex")));
Console.WriteLine($"索引别名{newIndexName}=>{newIndexName}：{r2.ApiCall.Success}");
}
//将老索引中的文档索引导新建的索引
var r1 = client.ReindexOnServer(r => r.Source(s => s.Index(Indices.Index(oldIndexName))).Destination(d => d.Index(newIndexName)));
Console.WriteLine($"重新索引：{r1.ApiCall.Success}");
if (r1.ApiCall.Success)
{
//老索引中的所有文档全部到新索引之后删除老索引
client.DeleteIndex(Indices.Index(oldIndexName));
//新索引设置别名为老索引的名字
var r3 = client.Alias(t => t.Add(a => a.Index(newIndexName).Alias(oldIndexName)));
Console.WriteLine($"索引别名{newIndexName}=>{oldIndexName}：{r3.ApiCall.Success}");
}
}
return(alias.Exists);
}
public static IExistsResponse AliasExists(this IElasticClient client, string aliasName, string indexName = null)
{
return(client.AliasExists(new AliasExistsRequest(indexName, aliasName)));
}
public void ConfigureIndexes(IElasticClient client)
{
foreach (var index in GetIndexes())
{
IIndicesOperationResponse response = null;
int currentVersion = GetAliasVersion(client, index.Name);
var templatedIndex = index as ITemplatedElasticSeachIndex;
if (templatedIndex != null)
{
response = client.PutTemplate(index.VersionedName, template => templatedIndex.CreateTemplate(template).AddAlias(index.Name));
}
else if (!client.IndexExists(index.VersionedName).Exists)
{
response = client.CreateIndex(index.VersionedName, descriptor => index.CreateIndex(descriptor).AddAlias(index.Name));
}
Debug.Assert(response == null || response.IsValid, response?.ServerError != null ? response.ServerError.Error : "An error occurred creating the index or template.");
// Add existing indexes to the alias.
if (!client.AliasExists(index.Name).Exists)
{
if (templatedIndex != null)
{
var indices = client.IndicesStats().Indices.Where(kvp => kvp.Key.StartsWith(index.VersionedName)).Select(kvp => kvp.Key).ToList();
if (indices.Count > 0)
{
var descriptor = new AliasDescriptor();
foreach (string name in indices)
{
descriptor.Add(add => add.Index(name).Alias(index.Name));
}
response = client.Alias(descriptor);
}
}
else
{
response = client.Alias(a => a.Add(add => add.Index(index.VersionedName).Alias(index.Name)));
}
Debug.Assert(response != null && response.IsValid, response?.ServerError != null ? response.ServerError.Error : "An error occurred creating the alias.");
}
// already on current version
if (currentVersion >= index.Version || currentVersion < 1)
{
continue;
}
// upgrade
_lockProvider.TryUsingAsync("reindex", async() => {
await _workItemQueue.EnqueueAsync(new ReindexWorkItem {
OldIndex = String.Concat(index.Name, "-v", currentVersion),
NewIndex = index.VersionedName,
Alias = index.Name,
DeleteOld = true
});
}, TimeSpan.Zero, CancellationToken.None);
}
}
public virtual void ConfigureIndexes(IElasticClient client, IEnumerable <IElasticIndex> indexes = null)
{
if (indexes == null)
{
indexes = GetIndexes();
}
foreach (var idx in indexes)
{
int currentVersion = GetAliasVersion(client, idx.AliasName);
IIndicesOperationResponse response = null;
var templatedIndex = idx as ITemplatedElasticIndex;
if (templatedIndex != null)
{
response = client.PutTemplate(idx.VersionedName, template => templatedIndex.CreateTemplate(template).AddAlias(idx.AliasName));
}
else if (!client.IndexExists(idx.VersionedName).Exists)
{
response = client.CreateIndex(idx.VersionedName, descriptor => idx.CreateIndex(descriptor).AddAlias(idx.AliasName));
}
Debug.Assert(response == null || response.IsValid, response?.ServerError != null ? response.ServerError.Error : "An error occurred creating the index or template.");
// Add existing indexes to the alias.
if (!client.AliasExists(idx.AliasName).Exists)
{
if (templatedIndex != null)
{
var indices = client.IndicesStats().Indices.Where(kvp => kvp.Key.StartsWith(idx.VersionedName)).Select(kvp => kvp.Key).ToList();
if (indices.Count > 0)
{
var descriptor = new AliasDescriptor();
foreach (string name in indices)
{
descriptor.Add(add => add.Index(name).Alias(idx.AliasName));
}
response = client.Alias(descriptor);
}
}
else
{
response = client.Alias(a => a.Add(add => add.Index(idx.VersionedName).Alias(idx.AliasName)));
}
Debug.Assert(response != null && response.IsValid, response?.ServerError != null ? response.ServerError.Error : "An error occurred creating the alias.");
}
// already on current version
if (currentVersion >= idx.Version || currentVersion < 1)
{
continue;
}
var reindexWorkItem = new ReindexWorkItem {
OldIndex = String.Concat(idx.AliasName, "-v", currentVersion),
NewIndex = idx.VersionedName,
Alias = idx.AliasName,
DeleteOld = true,
ParentMaps = idx.GetIndexTypes()
.Select(kvp => new ParentMap {
Type = kvp.Value.Name, ParentPath = kvp.Value.ParentPath
})
.Where(m => !String.IsNullOrEmpty(m.ParentPath))
.ToList()
};
bool isReindexing = _lockProvider.IsLockedAsync(String.Concat("reindex:", reindexWorkItem.Alias, reindexWorkItem.OldIndex, reindexWorkItem.NewIndex)).Result;
// already reindexing
if (isReindexing)
{
continue;
}
// enqueue reindex to new version
_lockProvider.TryUsingAsync("enqueue-reindex", () => _workItemQueue.EnqueueAsync(reindexWorkItem), TimeSpan.Zero, CancellationToken.None).Wait();
}
}