// TODO I think we need to take a fresh approach to this.. it's getting really complex with heaps of edge cases
private BranchConfig InheritBranchConfiguration(IBranch targetBranch, BranchConfig branchConfiguration, ICommit currentCommit, Config configuration, IList <IBranch> excludedInheritBranches)
{
using (log.IndentLog("Attempting to inherit branch configuration from parent branch"))
{
var excludedBranches = new[] { targetBranch };
// Check if we are a merge commit. If so likely we are a pull request
var parentCount = currentCommit.Parents.Count();
if (parentCount == 2)
{
excludedBranches = CalculateWhenMultipleParents(currentCommit, ref targetBranch, excludedBranches);
}
excludedInheritBranches ??= repositoryMetadataProvider.GetExcludedInheritBranches(configuration).ToList();
excludedBranches = excludedBranches.Where(b => excludedInheritBranches.All(bte => !b.Equals(bte))).ToArray();
// Add new excluded branches.
foreach (var excludedBranch in excludedBranches)
{
excludedInheritBranches.Add(excludedBranch);
}
var branchesToEvaluate = repositoryMetadataProvider.ExcludingBranches(excludedInheritBranches).ToList();
var branchPoint = repositoryMetadataProvider
.FindCommitBranchWasBranchedFrom(targetBranch, configuration, excludedInheritBranches.ToArray());
List <IBranch> possibleParents;
if (branchPoint == BranchCommit.Empty)
{
possibleParents = repositoryMetadataProvider.GetBranchesContainingCommit(targetBranch.Tip, branchesToEvaluate)
// It fails to inherit Increment branch configuration if more than 1 parent;
// therefore no point to get more than 2 parents
.Take(2)
.ToList();
}
else
{
var branches = repositoryMetadataProvider.GetBranchesContainingCommit(branchPoint.Commit, branchesToEvaluate).ToList();
if (branches.Count > 1)
{
var currentTipBranches = repositoryMetadataProvider.GetBranchesContainingCommit(currentCommit, branchesToEvaluate).ToList();
possibleParents = branches.Except(currentTipBranches).ToList();
}
else
{
possibleParents = branches;
}
}
log.Info("Found possible parent branches: " + string.Join(", ", possibleParents.Select(p => p.ToString())));
if (possibleParents.Count == 1)
{
var branchConfig = GetBranchConfiguration(possibleParents[0], currentCommit, configuration, excludedInheritBranches);
// If we have resolved a fallback config we should not return that we have got config
if (branchConfig.Name != FallbackConfigName)
{
return(new BranchConfig(branchConfiguration)
{
Increment = branchConfig.Increment,
PreventIncrementOfMergedBranchVersion = branchConfig.PreventIncrementOfMergedBranchVersion,
// If we are inheriting from develop then we should behave like develop
TracksReleaseBranches = branchConfig.TracksReleaseBranches
});
}
}
// If we fail to inherit it is probably because the branch has been merged and we can't do much. So we will fall back to develop's config
// if develop exists and master if not
var errorMessage = possibleParents.Count == 0
? "Failed to inherit Increment branch configuration, no branches found."
: "Failed to inherit Increment branch configuration, ended up with: " + string.Join(", ", possibleParents.Select(p => p.ToString()));
var chosenBranch = repositoryMetadataProvider.GetChosenBranch(configuration);
if (chosenBranch == null)
{
// TODO We should call the build server to generate this exception, each build server works differently
// for fetch issues and we could give better warnings.
throw new InvalidOperationException("Could not find a 'develop' or 'master' branch, neither locally nor remotely.");
}
log.Warning($"{errorMessage}{System.Environment.NewLine}Falling back to {chosenBranch} branch config");
// To prevent infinite loops, make sure that a new branch was chosen.
if (targetBranch.Equals(chosenBranch))
{
var developOrMasterConfig =
ChooseMasterOrDevelopIncrementStrategyIfTheChosenBranchIsOneOfThem(
chosenBranch, branchConfiguration, configuration);
if (developOrMasterConfig != null)
{
return(developOrMasterConfig);
}
log.Warning("Fallback branch wants to inherit Increment branch configuration from itself. Using patch increment instead.");
return(new BranchConfig(branchConfiguration)
{
Increment = IncrementStrategy.Patch
});
}
var inheritingBranchConfig = GetBranchConfiguration(chosenBranch, currentCommit, configuration, excludedInheritBranches);
var configIncrement = inheritingBranchConfig.Increment;
if (inheritingBranchConfig.Name.IsEquivalentTo(FallbackConfigName) && configIncrement == IncrementStrategy.Inherit)
{
log.Warning("Fallback config inherits by default, dropping to patch increment");
configIncrement = IncrementStrategy.Patch;
}
return(new BranchConfig(branchConfiguration)
{
Increment = configIncrement,
PreventIncrementOfMergedBranchVersion = inheritingBranchConfig.PreventIncrementOfMergedBranchVersion,
// If we are inheriting from develop then we should behave like develop
TracksReleaseBranches = inheritingBranchConfig.TracksReleaseBranches
});
}
}
