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));
}
}
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 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 NewDeploymentOfSolutionDetectedEvent(HostLifeIdentity host, SolutionHead deployment, SolutionDefinition solution)
{
Host = host;
Deployment = deployment;
Solution = solution;
}
