public string GetStatus()
{
// Use the cluster health API to verify that the Best Bets index is functioning.
// Maps to https://ncias-d1592-v.nci.nih.gov:9299/_cluster/health/bestbets?pretty (or other server)
//
// References:
// https://www.elastic.co/guide/en/elasticsearch/reference/master/cluster-health.html
// https://github.com/elastic/elasticsearch/blob/master/rest-api-spec/src/main/resources/rest-api-spec/api/cluster.health.json#L20
IClusterHealthResponse response = _elasticClient.ClusterHealth(hd =>
{
hd = hd
.Index("autosg");
return(hd);
});
if (!response.IsValid)
{
_logger.LogError("Error checking ElasticSearch health.");
_logger.LogError("Returned debug info: {0}.", response.DebugInformation);
throw new APIErrorException(500, "Errors Occurred.");
}
if (response.Status != "green" &&
response.Status != "yellow")
{
_logger.LogError("Elasticsearch not healthy. Index status is '{0}'.", response.Status);
throw new APIErrorException(500, "Service not healthy.");
}
return(HEALTHY_STATUS);
}
protected override void IntegrationSetup(IElasticClient client, CallUniqueValues values)
{
foreach (var index in values.Values) client.CreateIndex(index, this.CreateIndexSettings).ShouldBeValid();
var indices = Infer.Indices(values.Values.Select(i => (IndexName)i));
client.ClusterHealth(f => f.WaitForStatus(WaitForStatus.Yellow).Index(indices))
.ShouldBeValid();
}
private static bool IsServerInitialized(IElasticClient client)
{
var pingResponse = client.Ping();
if (pingResponse.IsValid)
{
Log.Information("Elasticsearch cluster responded to PING. Checking cluster health...");
var clusterHealthResponse = client.ClusterHealth();
if (clusterHealthResponse.IsValid)
{
switch (clusterHealthResponse.Status)
{
case Health.Red:
Log.Warning("Elasticsearch cluster health is RED. Will back off and wait for cluster to recover");
return(false);
case Health.Yellow:
Log.Warning("Elasticsearch cluster health is YELLOW.");
return(true);
case Health.Green:
Log.Information("Elasticsearch cluster health is GREEN");
return(true);
default:
throw new ArgumentOutOfRangeException();
}
}
}
return(false);
}
protected override void IntegrationSetup(IElasticClient client, CallUniqueValues values)
{
foreach (var index in values.Values)
{
client.CreateIndex(index);
}
client.ClusterHealth(f => f.WaitForStatus(WaitForStatus.Yellow));
}
protected override void BeforeAllCalls(IElasticClient client, IDictionary <ClientMethod, string> values)
{
foreach (var index in values.Values)
{
client.CreateIndex(index);
}
client.ClusterHealth(f => f.WaitForStatus(WaitForStatus.Yellow));
}
public override void Validate(IElasticClient client, NodeConfiguration configuration)
{
var healthyCluster = client.ClusterHealth(g => g
.WaitForStatus(WaitForStatus.Yellow)
.Timeout(ClusterHealthTimeout)
);
if (!healthyCluster.IsValid)
{
throw new Exception($"Did not see a healhty cluster before calling onNodeStarted handler." + healthyCluster.DebugInformation);
}
}
private void WaitForClusterBootstrap(IElasticClient client, XplatManualResetEvent handle, bool alreadyRunningInstance)
{
var healthyCluster = client.ClusterHealth(g => g.WaitForStatus(WaitForStatus.Yellow).Timeout(ClusterHealthTimeout));
if (healthyCluster.IsValid)
{
this.Started = true;
this._blockingSubject.OnNext(handle);
if (alreadyRunningInstance && !handle.WaitOne(HandleTimeout, true))
{
throw new Exception($"Could not launch tests on already running elasticsearch within {HandleTimeout}");
}
}
else
{
this.Fatal(handle, new Exception("Did not see a healthy cluster after the node started for 30 seconds"));
}
}
