public static bool IsContainersFeaturePresent()
{
try
{
DismPackageFeatureState featureState = DismHelper.GetFeatureState(ContainersFeatureName);
switch (featureState)
{
case DismPackageFeatureState.DismStateInstallPending:
case DismPackageFeatureState.DismStateInstalled:
case DismPackageFeatureState.DismStateSuperseded:
return(true);
}
}
catch (COMException ex)
{
// Dism COM errors aren't well understood yet across different OSes. TODO Handle specific error codes and throw the rest
DeployerTrace.WriteWarning(StringResources.Warning_FabricDeployer_DockerDnsSetup_ErrorGettingFeatureState1, ContainersFeatureName, ex);
}
catch (DllNotFoundException ex)
{
// This happens on platforms that don't have dismapi.dll
// https://technet.microsoft.com/en-us/library/hh825186.aspx
DeployerTrace.WriteWarning(
StringResources.Warning_FabricDeployer_DockerDnsSetup_ErrorGettingFeatureState2,
ContainersFeatureName,
ex);
}
catch (Exception ex)
{
// Swallowing all!
// Setup for Docker isn't a mainline scenario currently. Hence try and continue.
// If an exception is thrown on an OS that has Docker, and setup doesn't continue, we have mitigation
// steps on the VM by setting ContinueIfContainersFeatureNotInstalled.
// E.g. FabricDeployer.exe /operation:DockerDnsSetup /continueIfContainersFeatureNotInstalled:true
DeployerTrace.WriteWarning(
StringResources.Warning_FabricDeployer_DockerDnsSetup_ErrorGettingFeatureState3,
ContainersFeatureName,
ex);
}
return(false);
}
internal static bool IsContainersFeaturePresent()
{
try
{
DismPackageFeatureState featureState = DismHelper.GetFeatureState(Constants.ContainersFeatureName);
switch (featureState)
{
case DismPackageFeatureState.DismStateInstallPending:
case DismPackageFeatureState.DismStateInstalled:
case DismPackageFeatureState.DismStateSuperseded:
return(true);
}
}
catch (COMException ex)
{
// Dism COM errors aren't well understood yet across different OSes. TODO Handle specific error codes and throw the rest
DeployerTrace.WriteWarning("Error getting feature state for feature {0}. Treating feature as not present and continuing. Exception: {1}", Constants.ContainersFeatureName, ex);
}
catch (DllNotFoundException ex)
{
// This happens on platforms that don't have dismapi.dll
// https://technet.microsoft.com/en-us/library/hh825186.aspx
DeployerTrace.WriteWarning(
"Error getting feature state for feature {0}. This usually means that the platform doesn't support DISM APIs. " +
"Treating feature as not present and continuing. Exception: {1}",
Constants.ContainersFeatureName,
ex);
}
catch (Exception ex)
{
// Swallowing all!
DeployerTrace.WriteWarning(
"Unexpected error getting feature state for feature {0}. " +
"Treating feature as not present and continuing. Exception: {1}",
Constants.ContainersFeatureName,
ex);
}
return(false);
}