/// <summary>
/// Populate the set of roles which this station supports. May be a zero-length list.
/// </summary>
/// <param name="configData">ConfigData for this station</param>
protected virtual void PopulateRoles(ConfigData configData)
{
roles = configData.Values(Constants.StationRole).ToList();
}
private void PopulatePublicFields(ConfigData configData)
{
var publicFieldConfigs = configData.GetConfigSections(Constants.CustomFieldConfig);
foreach (var pubConfig in publicFieldConfigs)
{
var name = pubConfig.RequiredValue(Constants.CustomFieldName);
var label = pubConfig.Value(Constants.CustomFieldLabel);
var type = pubConfig.Value(Constants.CustomFieldType);
var searchable = pubConfig.BoolValue(Constants.CustomFieldSearchable, false);
var pub = pubConfig.BoolValue(Constants.CustomFieldPublic, false);
var field = new CustomFieldDefinition(name, type)
{
Label = label,
Searchable = searchable,
Public = pub
};
customFields.Add(field);
}
}
/// <summary>
/// Populate the set of commands which this station supports. May be a zero-length list.
/// </summary>
/// <param name="configData">ConfigData for this station</param>
/// <param name="commandResolver"></param>
protected virtual void PopulateCommands(ConfigData configData, Resolver commandResolver)
{
var commandNames = configData.Values(Constants.StationCommand).ToList();
foreach (var name in commandNames)
{
if (commandResolver == null)
{
throw new Exception(string.Format("No CommandResolver available for command {0}, station {1}",
name, StationDescription));
}
var cmd = commandResolver.GetCommandByName(name);
if (cmd == null)
{
throw new Exception(string.Format("No Command found for commandName {0}, station {1}",
name, StationDescription));
}
Register(cmd);
}
}
/// <summary>
/// Populate the set of operations which this station supports.
/// Required: opCode
/// Optional: opLabel (defaults to opCode)
/// Optional: operandCount (defaults to zero)
/// </summary>
/// <param name="configData">ConfigData for this station</param>
protected virtual void PopulateOperations(ConfigData configData)
{
operations = new List<OperationDefinition>(Criterion.Definitions);
// start with copy of the standard operations
// add the custom operations
var opConfig = configData.GetConfigSections(Constants.Operation);
foreach (var cd in opConfig)
{
var code = cd.RequiredValue(Constants.OperationCode);
var operandCount = cd.IntValue(Constants.OperationOperandCount);
if (!operandCount.HasValue) operandCount = 0;
var label = cd.Value(Constants.OperationLabel);
if (label == null) label = code;
operations.Add(new OperationDefinition(code, operandCount.Value, label));
}
}
/// <summary>
/// initialization using data in ConfigData object.
/// This should be called immediately after the constructor.
/// Each Station subclass should call base.initialize(configData, memory) from its own initialize() method.
/// </summary>
public virtual void Initialize(ConfigData configData, InstanceMemory memory, Resolver resolver)
{
// do any other global Station initialization here
this.Memory = memory;
stationDescription = configData.Value(Constants.StationDescription);
entities = LoadStationEntities(configData);
var max = configData.IntValue(Constants.StationMaxSearchResults);
MaxSearchResults = max ?? int.MaxValue;
var ageLimit = configData.IntValue(Constants.StationAgeLimit);
AgeLimit = ageLimit ?? int.MaxValue;
PopulateRoles(configData);
PopulateOperations(configData);
PopulateCommands(configData, resolver);
PopulatePublicFields(configData);
}
protected virtual List<StationEntity> LoadStationEntities(ConfigData configData)
{
var entitiesList = new List<StationEntity>();
var entityConfigs = configData.GetConfigSections(Constants.StationEntity);
foreach (var entityConfig in entityConfigs)
{
var entityName = entityConfig.RequiredValue(Constants.StationEntityName);
var entity = new StationEntity(entityName);
var entityLocation = entityConfig.Value(Constants.StationEntityLocation);
entity.Location = (entityLocation);
var fieldConfigs = entityConfig.GetConfigSections(Constants.StationField);
foreach (var fieldConfig in fieldConfigs)
{
var field = new StationField(fieldConfig.RequiredValue(Constants.StationFieldName));
field.Type = (fieldConfig.RequiredValue(Constants.StationFieldType));
// if location is empty, just use field name as default location
var location = fieldConfig.Value(Constants.StationFieldLocation);
if (location == null) location = field.Name;
field.Location = (location);
field.Level = (fieldConfig.IntValue(Constants.StationFieldLevel));
// TODO set other field properties - referredEntity, referredEntityField
entity.AddField(field);
}
var sortField = entityConfig.Value(Constants.StationEntitySortField);
if (sortField != null)
{
entity.SortField = (sortField);
var sortOrder = entityConfig.Value(Constants.StationEntitySortOrder);
if (sortOrder != null && sortOrder.ToUpper().StartsWith("DESC"))
{
entity.DescendingSort = (true);
}
}
entitiesList.Add(entity);
}
return entitiesList;
}
public ConfiguredStation(int id, ConfigData configData)
{
this.id = id;
this.ConfigData = configData;
}
/// <summary>
/// initialization using data in ConfigData object.
/// This should be called immediately after the constructor.
/// Each Station subclass should call base.initialize(configData, memory) from its own initialize() method.
/// </summary>
public override void Initialize(ConfigData configData, InstanceMemory memory, Resolver commandResolver)
{
base.Initialize(configData, memory, commandResolver);
// do any other Station specific initialization here
HomePath = configData.RequiredValue("homePath");
if (!(HomePath.EndsWith(@"\") || HomePath.EndsWith(@"/")))
HomePath += "/";
User = configData.Value("user");
Password = configData.Value("password");
IncludeSubfolders = configData.BoolValue("includeSubfolders", false);
string possibleError;
var unc = ConnectUnc(out possibleError);
try
{
EntityName = configData.RequiredValue("entityName");
List<ConfigData> folderConfigs = configData.GetConfigSections("folder");
if (folderConfigs.Count == 0)
throw new Exception("No folders configured for station " + this.GetType());
foreach (ConfigData folderConfig in folderConfigs)
{
string name = folderConfig.RequiredValue("name");
string status = folderConfig.Value("status");
if (status == null) status = name;
string path = HomePath + name;
if (Directory.Exists(path))
{
Folder f = new Folder(name, status, path);
Folders.Add(f);
}
else
{
Console.Error.WriteLine("WARNING: Directory not found: {0}", path);
}
}
if (Folders.Count == 0)
{
string error = "No folders accessible for station " + this.GetType();
if (possibleError != null)
error += "; " + possibleError;
throw new Exception(error);
}
List<ConfigData> extConfigs = configData.GetConfigSections("extension");
foreach (ConfigData extConfig in extConfigs)
{
string ext = extConfig.Value();
if (string.IsNullOrEmpty(ext))
{
throw new Exception("Property is empty: extension");
}
Extensions.Add(ext);
}
}
finally
{
if (unc != null) unc.Dispose();
}
}
/// <summary>
/// create a new Station, based on the station entityName specified in the portion of the config file.
/// </summary>
/// <param name="configData">portion of a config file describing this particular station</param>
/// <param name="mem"></param>
/// <returns>a new Station of object, of the desired flavor; returns null if the station is inactive</returns>
private Station NewStation(ConfigData configData, InstanceMemory mem)
{
Station s;
string stationClassName = configData.RequiredValue(Constants.StationClassName);
//Console.Error.WriteLine("Creating new station: " + stationClassName);
try
{
s = classFactory.InstantiateStationClass(stationClassName);
if (s != null)
{
s.Initialize(configData, mem, this);
}
else
{
throw new Exception("Unable to create Station Class " + stationClassName);
}
}
catch (Exception e)
{
throw new Exception("Unable to create Station Class " + stationClassName, e);
}
//log.WriteLine("Station type "+s.getStationDescription()+" successfully initialized");
return s;
}
/// <summary>
/// create a new StationCommand, based on the StationCommand class name specified in the
/// portion of the config file.
/// </summary>
/// <param name="configData">portion of a config file describing this particular stationCommand</param>
/// <returns> a new StationCommand of object, of the desired flavor;
/// returns null if the stationCommand is inactive</returns>
private StationCommand NewStationCommand(ConfigData configData)
{
StationCommand cmd;
string stationCommandClassName = configData.RequiredValue(Constants.CommandClassName);
//// if the command is configured to be inactive, just return null
//String active = configData.value(Constants.ACTIVE_COMMAND);
//if (!String.IsNullOrEmpty(active) && active.Equals(Constants.FALSE, StringComparison.InvariantCultureIgnoreCase))
//{
// //Console.Error.WriteLine("ignoring inactive command: " + stationCommandClassName);
// return null;
//}
//Console.Error.WriteLine("Creating new stationCommand: " + stationCommandClassName);
try
{
cmd = classFactory.InstantiateStationCommandClass(stationCommandClassName);
if (cmd != null)
{
cmd.Initialize(configData);
}
else
{
throw new Exception("Unable to create StationCommand Class " + stationCommandClassName);
}
}
catch (Exception e)
{
throw new Exception("Unable to create StationCommand Class " + stationCommandClassName, e);
}
//log.WriteLine("Command type "+s.getStationCommandDescription()+" successfully initialized");
return cmd;
}
private void InitializeCommand(ConfigData cmdConfig, ConfiguredStationCommand cc)
{
StationCommand cmd = null;
try
{
cmd = NewStationCommand(cmdConfig);
if (cmd != null)
{
cc.StationCommand = cmd;
cc.Description = cmd.Description; // allow command to provide an updated description
//cc.enabled = true;
}
}
catch (Exception e)
{
cc.Error = e.Message;
errors += "Command not available: ";
errorsDetail += "Command not available: ";
if (cmd != null)
{
errors += cmd.ToString();
errorsDetail += cmd.ToString();
}
errors += "\n";
errors += e.Message + "\n";
errorsDetail += "\n";
errorsDetail += e + "\n";
}
}
private void ConfigureStations(InstanceMemory mem, ConfigData config)
{
// for each station element in the configStream file,
// create a station and add it to the stations list
List<ConfigData> stationConfigs = config.GetConfigSections(Constants.StationConfig);
int index = 0;
foreach (ConfigData sConfig in stationConfigs)
{
ConfiguredStation cs = new ConfiguredStation(index++, sConfig);
cs.Description = sConfig.Value(Constants.StationDescription);
if (string.IsNullOrWhiteSpace(cs.Description))
cs.Description = sConfig.Value(Constants.StationClassName);
configuredStations.Add(cs);
// if the Station is configured to be inactive, don't initialize
bool active = sConfig.BoolValue(Constants.ActiveStation, true);
if (active)
{
InitializeStation(mem, cs);
}
}
}
private void ConfigureCommands(ConfigData config)
{
// for each command element in the configStream file,
// create a StationCommand and add it to the Commands list
List<ConfigData> commandConfigs = config.GetConfigSections(Constants.CommandConfig);
int index = 0;
foreach (ConfigData cmdConfig in commandConfigs)
{
ConfiguredStationCommand cc = new ConfiguredStationCommand(index++);
cc.Description = cmdConfig.Value(Constants.CommandDescription);
if (string.IsNullOrWhiteSpace(cc.Description))
cc.Description = cmdConfig.Value(Constants.CommandClassName);
configuredCommands.Add(cc);
InitializeCommand(cmdConfig, cc);
//// if the Command is configured to be inactive, don't initialize
//String active = cmdConfig.value(Constants.ACTIVE_STATION);
//if (active == null || !active.Equals(Constants.FALSE, StringComparison.InvariantCultureIgnoreCase))
//{
// InitializeCommand(cmdConfig, cc);
//}
}
}
/// <summary>
/// alternate constructor -- performs the initialization, including reading the config
/// file, instantiating and initializing the configured stations,
/// specifying an alternate class factory to instantiate stations.
/// </summary>
/// <param name="configName">name of configuration file which describes this specific pipeline</param>
/// <param name="memory">instance memory to be associated with this pipeline</param>
/// <param name="stationCreator">used when we had problems finding classes in a different assembly</param>
public Pipeline(string configName, InstanceMemory memory, ClassFactory stationCreator)
{
this.classFactory = stationCreator;
this.memory = memory;
// read config file
Stream configStream = new FileStream(configName, FileMode.Open, FileAccess.Read);
// TODO new way to get the resource file -- actually should use IOC / Dependency Injection
// also accept a stream instead of a file
ConfigData config = new ConfigData(configStream);
errors = "";
errorsDetail = "";
ConfigureCommands(config);
ConfigureStations(memory, config);
ConfigFile = (configName);
Description = (config.RequiredValue("description"));
if (errors.Length > 0)
{
//Console.Error.WriteLine("WARNING: " + _errors); // leave it to the app to decide how to present error messages
//throw new StationFailedException(_errors); // allow the constructor to succeed, caller can check HasError
}
}
public override void Initialize(ConfigData configData)
{
base.Initialize(configData);
retryPath = configData.RequiredValue("retryPath");
retryUser = configData.RequiredValue("retryUser");
retryPassword = configData.RequiredValue("retryPassword");
}