public override bool OnStart()
{
// Not sure what this should be. Hopefully storage over smb doesn't open a million connections
ServicePointManager.DefaultConnectionLimit = 12;
#region Load Config Settings
nodeName = RoleEnvironment.CurrentRoleInstance.Id;
string UseElasticLocalDataFolder = CloudConfigurationManager.GetSetting("UseElasticLocalDataFolder");
string javaInstaller = CloudConfigurationManager.GetSetting("JavaInstallerName");
string javaDownloadURL = CloudConfigurationManager.GetSetting("JavaDownloadURL");
string elasticsearchZip = CloudConfigurationManager.GetSetting("ElasticsearchZip");
string elasticsearchDownloadURL = CloudConfigurationManager.GetSetting("ElasticsearchDownloadURL");
string elasticsearchPluginContainer = CloudConfigurationManager.GetSetting("ElasticsearchPluginContainer");
string shareName = CloudConfigurationManager.GetSetting("ShareName"); //root path for es data
string shareDrive = CloudConfigurationManager.GetSetting("ShareDrive"); //Drive letter to map azure share
string endpointName = CloudConfigurationManager.GetSetting("EndpointName");
string archiveRoot = RoleEnvironment.GetLocalResource("ArchiveRoot").RootPath;
string logRoot = RoleEnvironment.GetLocalResource("LogRoot").RootPath;
string elasticDataRoot = RoleEnvironment.GetLocalResource("ElasticDataRoot").RootPath;
string elasticRoot = RoleEnvironment.GetLocalResource("ElasticRoot").RootPath;
string emulatorDataRoot = RoleEnvironment.GetLocalResource("EmulatorDataRoot").RootPath; // we need this cause we can't emulate shares
string roleRoot = Environment.GetEnvironmentVariable("ROLEROOT");
string tempPath = RoleEnvironment.GetLocalResource("CustomTempRoot").RootPath; //Standard temp folder is too small
/**
* Issue #1. In azure the role root is just a drive letter. Unfortunately, System.IO doesn't add needed slash
* so Path.Combine("E:","path\to\file") yields E:path\to\file
* Still hoping there is a .net api that I an use to avoid the code below.
*/
if (!roleRoot.EndsWith(@"\"))
{
roleRoot += @"\";
}
#endregion
#region Configure Java manager
//Are we downloading java from storage or regular url?
string javaDownloadType = CloudConfigurationManager.GetSetting("JavaDownloadType");
WebArtifact javaArtifact;
if (!string.IsNullOrWhiteSpace(javaDownloadType) && javaDownloadType == "storage")
{
javaArtifact = new StorageArtifact(javaDownloadURL, javaInstaller, storage);
}
else
{
javaArtifact = new WebArtifact(javaDownloadURL, javaInstaller);
}
javaManager = new JavaManager(javaArtifact, archiveRoot, logRoot); //Java installer
#endregion
#region Configure Elasticsearch manager
//Are we downloading elasticsearch from storage or regular url?
string elasticsearchDownloadType = CloudConfigurationManager.GetSetting("ElasticsearchDownloadType");
WebArtifact elasticsearchArtifact;
if (!string.IsNullOrWhiteSpace(elasticsearchDownloadType) && elasticsearchDownloadType == "storage")
{
elasticsearchArtifact = new StorageArtifact(elasticsearchDownloadURL, elasticsearchZip, storage);
}
else
{
elasticsearchArtifact = new WebArtifact(elasticsearchDownloadURL, elasticsearchZip);
}
bridge = new PipesRuntimeBridge(endpointName); //Discovery helper
if (UseElasticLocalDataFolder.ToLower() != "true")
{
//Azure file is not available in emulator
if (!RoleEnvironment.IsEmulated)
{
// Mount a drive for a CloudFileShare.
Trace.WriteLine("Configuring file Share");
var share = storage.CreateCloudFileClient()
.GetShareReference(shareName);
share.CreateIfNotExists();
Trace.WriteLine("Mapping Share to " + shareDrive);
share.Mount(shareDrive);
}
else
{
shareDrive = emulatorDataRoot;
}
}
else
{
shareDrive = elasticDataRoot;
}
var runtimeConfig = new ElasticsearchRuntimeConfig
{
DataPath = shareDrive,
LogPath = logRoot,
TempPath = tempPath,
NodeName = nodeName,
BridgePipeName = bridge.PipeName,
PackagePluginPath = Path.Combine(roleRoot, "approot", "plugins"),
TemplateConfigFile = Path.Combine(roleRoot, "approot", "config", ElasticsearchManager.ELASTICSEARCH_CONFIG_FILE),
TemplateLogConfigFile = Path.Combine(roleRoot, "approot", "config", ElasticsearchManager.ELASTICSEARCH_LOG_CONFIG_FILE)
};
elasticsearchManager = new ElasticsearchManager(runtimeConfig, elasticsearchArtifact, archiveRoot, elasticRoot, logRoot);
if (!string.IsNullOrWhiteSpace(elasticsearchPluginContainer))
{
elasticsearchManager.AddPluginSource(elasticsearchPluginContainer, storage);
}
#endregion
bool result = base.OnStart();
Trace.TraceInformation("ElasticsearchRole has been started");
return(result);
}
public string PostBackProc(string data, [AllowNull] string user, int userRights)
{
NameValueCollection parts = HttpUtility.ParseQueryString(data);
string form = parts["id"];
/////
///
///
PluginConfig config = this.pluginConfig;
string action = parts["id"];
if (NameToIdWithPrefix(SaveButtonName) == action)
{
try
{
PopulatePluginConfig(config, parts);
config.FireConfigChanged();
this.divToUpdate.Add(SuccessDivId, "Settings updated successfully");
}
catch (Exception e)
{
pluginInstance.LogError(string.Format("Error updating settings: {0}", e.Message));
this.divToUpdate.Add(ErrorDivId, "Error updating settings");
}
}
else if (NameToIdWithPrefix(TestButtonName) == action)
{
PluginConfig testConfig;
using (testConfig = new PluginConfig(HS, true))
{
PopulatePluginConfig(testConfig, parts);
ConnectionTestResults results = ElasticsearchManager.PerformConnectivityTest(testConfig);
if (results.ConnectionSuccessful)
{
StringBuilder stb = new StringBuilder();
stb.Append(@"<div>");
stb.Append(@"<h3>Connection Test Successful!<h3>");
stb.Append(BuildClusterHealthView(results.ClusterHealth));
stb.Append(@"</div>");
this.divToUpdate.Add(SuccessDivId, stb.ToString());
this.divToUpdate.Add(ErrorDivId, "");
}
else
{
string message = "Connection test failed";
if (results.ClusterHealth != null && results.ClusterHealth.OriginalException != null)
{
message += ": " + results.ClusterHealth.OriginalException.Message;
}
this.divToUpdate.Add(SuccessDivId, "");
this.divToUpdate.Add(ErrorDivId, message);
}
}
}
return(base.postBackProc(Name, data, user, userRights));
}
