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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2014-2023 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import class Basics.ObservabilityScope
import class PackageGraph.PinsStore
import struct PackageModel.PackageReference
import struct PackageModel.ToolsVersion
import struct TSCUtility.Version
extension Workspace {
/// Pins all of the current managed dependencies at their checkout state.
func saveResolvedFile(
pinsStore: PinsStore,
dependencyManifests: DependencyManifests,
originHash: String,
rootManifestsMinimumToolsVersion: ToolsVersion,
observabilityScope: ObservabilityScope
) throws {
var dependenciesToPin = [ManagedDependency]()
let requiredDependencies = try dependencyManifests.requiredPackages.filter(\.kind.isPinnable)
for dependency in requiredDependencies {
if let managedDependency = self.state.dependencies[comparingLocation: dependency] {
dependenciesToPin.append(managedDependency)
} else if let managedDependency = self.state.dependencies[dependency.identity] {
observabilityScope
.emit(
info: "required dependency '\(dependency.identity)' from '\(dependency.locationString)' was not found in managed dependencies, using alternative location '\(managedDependency.packageRef.locationString)' instead"
)
dependenciesToPin.append(ManagedDependency(packageRef: dependency, state: managedDependency.state, subpath: managedDependency.subpath))
} else {
observabilityScope
.emit(
warning: "required dependency '\(dependency.identity)' from '\(dependency.locationString)' was not found in managed dependencies and will not be recorded in resolved file"
)
}
}
// try to load the pin store from disk so we can compare for any changes
// this is needed as we want to avoid re-writing the resolved files unless absolutely necessary
var needsUpdate = false
if let storedPinStore = try? self.pinsStore.load() {
// compare for any differences between the existing state and the stored one
// subtle changes between versions of SwiftPM could treat URLs differently
// in which case we don't want to cause unnecessary churn
if dependenciesToPin.count != storedPinStore.pins.count {
needsUpdate = true
} else {
for dependency in dependenciesToPin {
if let pin = storedPinStore.pins[comparingLocation: dependency.packageRef] {
if pin.state != PinsStore.Pin(dependency)?.state {
needsUpdate = true
break
}
} else {
needsUpdate = true
break
}
}
}
} else {
needsUpdate = true
}
// exist early is there is nothing to do
if !needsUpdate {
return
}
// reset the pinsStore and start pinning the required dependencies.
pinsStore.unpinAll()
for dependency in dependenciesToPin {
pinsStore.pin(dependency)
}
observabilityScope.trap {
try pinsStore.saveState(
toolsVersion: rootManifestsMinimumToolsVersion,
originHash: originHash
)
}
// Ask resolved file watcher to update its value so we don't fire
// an extra event if the file was modified by us.
self.resolvedFileWatcher?.updateValue()
}
/// Watch the Package.resolved for changes.
///
/// This is useful if clients want to be notified when the Package.resolved
/// file is changed *outside* of libSwiftPM operations. For example, as part
/// of a git operation.
public func watchResolvedFile() throws {
// Return if we're already watching it.
guard self.resolvedFileWatcher == nil else { return }
self
.resolvedFileWatcher = try ResolvedFileWatcher(
resolvedFile: self.location
.resolvedVersionsFile
) { [weak self] in
self?.delegate?.resolvedFileChanged()
}
}
}
extension PinsStore {
/// Pin a managed dependency at its checkout state.
///
/// This method does nothing if the dependency is in edited state.
func pin(_ dependency: Workspace.ManagedDependency) {
if let pin = PinsStore.Pin(dependency) {
self.add(pin)
}
}
}
extension PinsStore.Pin {
fileprivate init?(_ dependency: Workspace.ManagedDependency) {
switch dependency.state {
case .sourceControlCheckout(.version(let version, let revision)):
self.init(
packageRef: dependency.packageRef,
state: .version(version, revision: revision.identifier)
)
case .sourceControlCheckout(.branch(let branch, let revision)):
self.init(
packageRef: dependency.packageRef,
state: .branch(name: branch, revision: revision.identifier)
)
case .sourceControlCheckout(.revision(let revision)):
self.init(
packageRef: dependency.packageRef,
state: .revision(revision.identifier)
)
case .registryDownload(let version):
self.init(
packageRef: dependency.packageRef,
state: .version(version, revision: .none)
)
case .edited, .fileSystem, .custom:
// NOOP
return nil
}
}
}
extension PackageReference.Kind {
var isPinnable: Bool {
switch self {
case .remoteSourceControl, .localSourceControl, .registry:
return true
default:
return false
}
}
}
extension PinsStore.PinState {
func equals(_ checkoutState: CheckoutState) -> Bool {
switch (self, checkoutState) {
case (.version(let lversion, let lrevision), .version(let rversion, let rrevision)):
return lversion == rversion && lrevision == rrevision.identifier
case (.branch(let lbranch, let lrevision), .branch(let rbranch, let rrevision)):
return lbranch == rbranch && lrevision == rrevision.identifier
case (.revision(let lrevision), .revision(let rrevision)):
return lrevision == rrevision.identifier
default:
return false
}
}
func equals(_: Version) -> Bool {
switch self {
case .version(let version, _):
return version == version
default:
return false
}
}
}
extension PinsStore.Pins {
subscript(comparingLocation package: PackageReference) -> PinsStore.Pin? {
if let pin = self[package.identity], pin.packageRef.equalsIncludingLocation(package) {
return pin
}
return .none
}
}
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