public void OnCellDefinitionChanged(CellDefinition newCellDefinition, SolutionHead newDeployment)
{
var oldCellDefinition = _cellDefinition;
var newAssemblies = newCellDefinition.Assemblies;
var newEntryPointTypeName = newCellDefinition.EntryPointTypeName;
_cellDefinition = newCellDefinition;
_deployment = newDeployment;
var entryPoint = _entryPoint;
if (entryPoint == null)
{
return;
}
if (!oldCellDefinition.Assemblies.Equals(newAssemblies) ||
!StringComparer.Ordinal.Equals(oldCellDefinition.EntryPointTypeName, newEntryPointTypeName))
{
// cancel will stop the cell and unload the AppDomain, but then automatically
// start again with the new assemblies and entry point
entryPoint.Cancel();
return;
}
entryPoint.AppplyChangedSettings(newCellDefinition.SettingsXml);
}
public void RunSync(CancellationToken cancellationToken)
{
_hostContext.Observer.TryNotify(() => new HostStartedEvent(_hostContext.Identity));
try
{
_currentDeployment = null;
_currentSolution = null;
_currentDeploymentEtag = null;
_autoLoadHeadDeploymentTimer.Change(0, _autoLoadHeadDeploymentIntervalMs);
_watchdogTimer.Change(_watchdogIntervalMs, _watchdogIntervalMs);
foreach (var command in _commandQueue.GetConsumingEnumerable(cancellationToken))
{
Do((dynamic)command, cancellationToken);
}
}
finally
{
_autoLoadHeadDeploymentTimer.Change(Timeout.Infinite, _autoLoadHeadDeploymentIntervalMs);
_watchdogTimer.Change(Timeout.Infinite, _watchdogIntervalMs);
_hostContext.Observer.TryNotify(() => new HostStoppedEvent(_hostContext.Identity));
}
}
internal ApplicationEnvironment(IHostContext hostContext, CellLifeIdentity cellIdentity, SolutionHead solution, AssembliesHead assemblies, Action <IHostCommand> sendCommand)
{
_hostContext = hostContext;
_cellIdentity = cellIdentity;
_solution = solution;
_assemblies = assemblies;
_sendCommand = sendCommand;
}
internal ApplicationEnvironment(IHostContext hostContext, CellLifeIdentity cellIdentity, SolutionHead solution, AssembliesHead assemblies, Action<IHostCommand> sendCommand)
{
_hostContext = hostContext;
_cellIdentity = cellIdentity;
_solution = solution;
_assemblies = assemblies;
_sendCommand = sendCommand;
}
private Cell(IHostContext hostContext, Action <IHostCommand> sendCommand, CellDefinition cellDefinition, SolutionHead deployment, string solutionName, CancellationToken cancellationToken)
{
_hostContext = hostContext;
_sendCommand = sendCommand;
_solutionName = solutionName;
_cellName = cellDefinition.CellName;
_cellDefinition = cellDefinition;
_deployment = deployment;
_cancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
}
private Cell(IHostContext hostContext, Action<IHostCommand> sendCommand, CellDefinition cellDefinition, SolutionHead deployment, string solutionName, CancellationToken cancellationToken)
{
_hostContext = hostContext;
_sendCommand = sendCommand;
_solutionName = solutionName;
_cellName = cellDefinition.CellName;
_cellDefinition = cellDefinition;
_deployment = deployment;
_cancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
}
public static Cell Run(
IHostContext hostContext,
Action<IHostCommand> sendCommand,
CellDefinition cellDefinition,
SolutionHead deployment,
string solutionName,
CancellationToken cancellationToken)
{
var process = new Cell(hostContext, sendCommand, cellDefinition, deployment, solutionName, cancellationToken);
process.Run();
return process;
}
public static Cell Run(
IHostContext hostContext,
Action <IHostCommand> sendCommand,
CellDefinition cellDefinition,
SolutionHead deployment,
string solutionName,
CancellationToken cancellationToken)
{
var process = new Cell(hostContext, sendCommand, cellDefinition, deployment, solutionName, cancellationToken);
process.Run();
return(process);
}
public CellLifeIdentity GetNewCellLifeIdentity(string solutionName, string cellName, SolutionHead deployment)
{
return new CellLifeIdentity(_identity, solutionName, cellName, Guid.NewGuid().ToString("N"));
}
public NewUnrelatedSolutionDetectedEvent(HostLifeIdentity host, SolutionHead deployment, SolutionDefinition solution)
{
Host = host;
Deployment = deployment;
Solution = solution;
}
void OnDeploymentChanged(SolutionHead newDeployment, SolutionDefinition newSolution, CancellationToken cancellationToken)
{
// 0. ANALYZE CELL LAYOUT CHANGES
var removed = new Dictionary <string, Cell>(_cells);
var added = new List <CellDefinition>();
var remaining = new List <CellDefinition>();
Dictionary <string, CellDefinition> old;
if (_currentSolution == null || _currentSolution.SolutionName != newSolution.SolutionName)
{
// we do not reuse cells in completely unrelated solutions (i.e. solution name changed)
_hostContext.Observer.TryNotify(() => new NewUnrelatedSolutionDetectedEvent(_hostContext.Identity, newDeployment, newSolution));
old = new Dictionary <string, CellDefinition>();
added.AddRange(newSolution.Cells);
}
else
{
// keep remaining cells (only touch cells that actually change in some way)
_hostContext.Observer.TryNotify(() => new NewDeploymentOfSolutionDetectedEvent(_hostContext.Identity, newDeployment, newSolution));
old = _currentSolution.Cells.ToDictionary(cellDefinition => cellDefinition.CellName);
foreach (var newCellDefinition in newSolution.Cells)
{
if (old.ContainsKey(newCellDefinition.CellName))
{
removed.Remove(newCellDefinition.CellName);
remaining.Add(newCellDefinition);
}
else
{
added.Add(newCellDefinition);
}
}
}
// 1. UPDATE
_currentSolution = newSolution;
_currentDeployment = newDeployment;
// 2. REMOVE CELLS NO LONGER PRESENT
foreach (var cell in removed)
{
_cells.Remove(cell.Key);
cell.Value.Cancel();
}
// 3. UPDATE CELLS STILL PRESENT
foreach (var newCellDefinition in remaining)
{
var oldCellDefinition = old[newCellDefinition.CellName];
if (!newCellDefinition.Equals(oldCellDefinition))
{
_cells[newCellDefinition.CellName].OnCellDefinitionChanged(newCellDefinition, newDeployment);
}
}
// 4. ADD NEW CELLS
foreach (var cellDefinition in added)
{
var cellName = cellDefinition.CellName;
_cells.Add(cellName, Cell.Run(_hostContext, _commandQueue.Add, cellDefinition, newDeployment, newSolution.SolutionName, cancellationToken));
}
}
public void RunSync(CancellationToken cancellationToken)
{
_hostContext.Observer.TryNotify(() => new HostStartedEvent(_hostContext.Identity));
try
{
_currentDeployment = null;
_currentSolution = null;
_currentDeploymentEtag = null;
_autoLoadHeadDeploymentTimer.Change(0, _autoLoadHeadDeploymentIntervalMs);
_watchdogTimer.Change(_watchdogIntervalMs, _watchdogIntervalMs);
foreach (var command in _commandQueue.GetConsumingEnumerable(cancellationToken))
{
Do((dynamic)command, cancellationToken);
}
}
finally
{
_autoLoadHeadDeploymentTimer.Change(Timeout.Infinite, _autoLoadHeadDeploymentIntervalMs);
_watchdogTimer.Change(Timeout.Infinite, _watchdogIntervalMs);
_hostContext.Observer.TryNotify(() => new HostStoppedEvent(_hostContext.Identity));
}
}
public void LoadDeployment(SolutionHead deployment)
{
_sendCommand(new LoadDeploymentCommand(deployment));
}
public void OnCellDefinitionChanged(CellDefinition newCellDefinition, SolutionHead newDeployment)
{
var oldCellDefinition = _cellDefinition;
var newAssemblies = newCellDefinition.Assemblies;
var newEntryPointTypeName = newCellDefinition.EntryPointTypeName;
_cellDefinition = newCellDefinition;
_deployment = newDeployment;
var entryPoint = _entryPoint;
if (entryPoint == null)
{
return;
}
if (!oldCellDefinition.Assemblies.Equals(newAssemblies)
|| !StringComparer.Ordinal.Equals(oldCellDefinition.EntryPointTypeName, newEntryPointTypeName))
{
// cancel will stop the cell and unload the AppDomain, but then automatically
// start again with the new assemblies and entry point
entryPoint.Cancel();
return;
}
entryPoint.AppplyChangedSettings(newCellDefinition.SettingsXml);
}
public LoadDeploymentCommand(SolutionHead deployment)
{
Deployment = deployment;
}
public void LoadDeployment(SolutionHead deployment)
{
_sendCommand(new LoadDeploymentCommand(deployment));
}
public CellLifeIdentity GetNewCellLifeIdentity(string solutionName, string cellName, SolutionHead deployment)
{
// TODO: Replace GUID with global blob counter
return new CellLifeIdentity(_identity, solutionName, cellName, Guid.NewGuid().ToString("N"));
}
public NewDeploymentOfSolutionDetectedEvent(HostLifeIdentity host, SolutionHead deployment, SolutionDefinition solution)
{
Host = host;
Deployment = deployment;
Solution = solution;
}
void OnDeploymentChanged(SolutionHead newDeployment, SolutionDefinition newSolution, CancellationToken cancellationToken)
{
// 0. ANALYZE CELL LAYOUT CHANGES
var removed = new Dictionary<string, Cell>(_cells);
var added = new List<CellDefinition>();
var remaining = new List<CellDefinition>();
Dictionary<string, CellDefinition> old;
if (_currentSolution == null || _currentSolution.SolutionName != newSolution.SolutionName)
{
// we do not reuse cells in completely unrelated solutions (i.e. solution name changed)
_hostContext.Observer.TryNotify(() => new NewUnrelatedSolutionDetectedEvent(_hostContext.Identity, newDeployment, newSolution));
old = new Dictionary<string, CellDefinition>();
added.AddRange(newSolution.Cells);
}
else
{
// keep remaining cells (only touch cells that actually change in some way)
_hostContext.Observer.TryNotify(() => new NewDeploymentOfSolutionDetectedEvent(_hostContext.Identity, newDeployment, newSolution));
old = _currentSolution.Cells.ToDictionary(cellDefinition => cellDefinition.CellName);
foreach (var newCellDefinition in newSolution.Cells)
{
if (old.ContainsKey(newCellDefinition.CellName))
{
removed.Remove(newCellDefinition.CellName);
remaining.Add(newCellDefinition);
}
else
{
added.Add(newCellDefinition);
}
}
}
// 1. UPDATE
_currentSolution = newSolution;
_currentDeployment = newDeployment;
// 2. REMOVE CELLS NO LONGER PRESENT
foreach (var cell in removed)
{
_cells.Remove(cell.Key);
cell.Value.Cancel();
}
// 3. UPDATE CELLS STILL PRESENT
foreach (var newCellDefinition in remaining)
{
var oldCellDefinition = old[newCellDefinition.CellName];
if (!newCellDefinition.Equals(oldCellDefinition))
{
_cells[newCellDefinition.CellName].OnCellDefinitionChanged(newCellDefinition, newDeployment);
}
}
// 4. ADD NEW CELLS
foreach (var cellDefinition in added)
{
var cellName = cellDefinition.CellName;
_cells.Add(cellName, Cell.Run(_hostContext, _commandQueue.Add, cellDefinition, newDeployment, newSolution.SolutionName, cancellationToken));
}
}
public LoadDeploymentCommand(SolutionHead deployment)
{
Deployment = deployment;
}