yay/depPool.go
2019-01-15 18:43:46 +00:00

477 lines
9.8 KiB
Go

package main
import (
"sort"
"strings"
"sync"
alpm "github.com/jguer/go-alpm"
rpc "github.com/mikkeloscar/aur"
)
type target struct {
Db string
Name string
Mod string
Version string
}
func toTarget(pkg string) target {
db, dep := splitDbFromName(pkg)
name, mod, version := splitDep(dep)
return target{
db,
name,
mod,
version,
}
}
func (t target) DepString() string {
return t.Name + t.Mod + t.Version
}
func (t target) String() string {
if t.Db != "" {
return t.Db + "/" + t.DepString()
}
return t.DepString()
}
type depPool struct {
Targets []target
Explicit stringSet
Repo map[string]*alpm.Package
Aur map[string]*rpc.Pkg
AurCache map[string]*rpc.Pkg
Groups []string
LocalDb *alpm.Db
SyncDb alpm.DbList
Warnings *aurWarnings
}
func makeDepPool() (*depPool, error) {
localDb, err := alpmHandle.LocalDb()
if err != nil {
return nil, err
}
syncDb, err := alpmHandle.SyncDbs()
if err != nil {
return nil, err
}
dp := &depPool{
make([]target, 0),
make(stringSet),
make(map[string]*alpm.Package),
make(map[string]*rpc.Pkg),
make(map[string]*rpc.Pkg),
make([]string, 0),
localDb,
syncDb,
nil,
}
return dp, nil
}
// Includes db/ prefixes and group installs
func (dp *depPool) ResolveTargets(pkgs []string) error {
// RPC requests are slow
// Combine as many AUR package requests as possible into a single RPC
// call
aurTargets := make(stringSet)
pkgs = removeInvalidTargets(pkgs)
for _, pkg := range pkgs {
var err error
target := toTarget(pkg)
// skip targets already satisfied
// even if the user enters db/pkg and aur/pkg the latter will
// still get skipped even if it's from a different database to
// the one specified
// this is how pacman behaves
if dp.hasPackage(target.DepString()) {
continue
}
var foundPkg *alpm.Package
var singleDb *alpm.Db
// aur/ prefix means we only check the aur
if target.Db == "aur" || mode == modeAUR {
dp.Targets = append(dp.Targets, target)
aurTargets.set(target.DepString())
continue
}
// If there'ss a different priefix only look in that repo
if target.Db != "" {
singleDb, err = alpmHandle.SyncDbByName(target.Db)
if err != nil {
return err
}
foundPkg, err = singleDb.PkgCache().FindSatisfier(target.DepString())
//otherwise find it in any repo
} else {
foundPkg, err = dp.SyncDb.FindSatisfier(target.DepString())
}
if err == nil {
dp.Targets = append(dp.Targets, target)
dp.Explicit.set(foundPkg.Name())
dp.ResolveRepoDependency(foundPkg)
continue
} else {
//check for groups
//currently we don't resolve the packages in a group
//only check if the group exists
//would be better to check the groups from singleDb if
//the user specified a db but there's no easy way to do
//it without making alpm_lists so don't bother for now
//db/group is probably a rare use case
group, err := dp.SyncDb.PkgCachebyGroup(target.Name)
if err == nil {
dp.Groups = append(dp.Groups, target.String())
group.ForEach(func(pkg alpm.Package) error {
dp.Explicit.set(pkg.Name())
return nil
})
continue
}
}
//if there was no db prefix check the aur
if target.Db == "" {
aurTargets.set(target.DepString())
}
dp.Targets = append(dp.Targets, target)
}
if len(aurTargets) > 0 && (mode == modeAny || mode == modeAUR) {
return dp.resolveAURPackages(aurTargets, true)
}
return nil
}
// Pseudo provides finder.
// Try to find provides by performing a search of the package name
// This effectively performs -Ss on each package
// then runs -Si on each result to cache the information.
//
// For example if you were to -S yay then yay -Ss would give:
// yay-git yay-bin yay realyog pacui pacui-git ruby-yard
// These packages will all be added to the cache in case they are needed later
// Ofcouse only the first three packages provide yay, the rest are just false
// positives.
//
// This method increases dependency resolve time
func (dp *depPool) findProvides(pkgs stringSet) error {
var mux sync.Mutex
var wg sync.WaitGroup
doSearch := func(pkg string) {
defer wg.Done()
var err error
var results []rpc.Pkg
// Hack for a bigger search result, if the user wants
// java-envronment we can search for just java instead and get
// more hits.
words := strings.Split(pkg, "-")
for i := range words {
results, err = rpc.SearchByNameDesc(strings.Join(words[:i+1], "-"))
if err == nil {
break
}
}
if err != nil {
return
}
for _, result := range results {
mux.Lock()
if _, ok := dp.AurCache[result.Name]; !ok {
pkgs.set(result.Name)
}
mux.Unlock()
}
}
for pkg := range pkgs {
if _, err := dp.LocalDb.PkgByName(pkg); err == nil {
continue
}
wg.Add(1)
go doSearch(pkg)
}
wg.Wait()
return nil
}
func (dp *depPool) cacheAURPackages(_pkgs stringSet) error {
pkgs := _pkgs.copy()
query := make([]string, 0)
for pkg := range pkgs {
if _, ok := dp.AurCache[pkg]; ok {
pkgs.remove(pkg)
}
}
if len(pkgs) == 0 {
return nil
}
if config.Provides {
err := dp.findProvides(pkgs)
if err != nil {
return err
}
}
for pkg := range pkgs {
if _, ok := dp.AurCache[pkg]; !ok {
name, _, _ := splitDep(pkg)
query = append(query, name)
}
}
info, err := aurInfo(query, dp.Warnings)
if err != nil {
return err
}
for _, pkg := range info {
// Dump everything in cache just in case we need it later
dp.AurCache[pkg.Name] = pkg
}
return nil
}
func (dp *depPool) resolveAURPackages(pkgs stringSet, explicit bool) error {
newPackages := make(stringSet)
newAURPackages := make(stringSet)
err := dp.cacheAURPackages(pkgs)
if err != nil {
return err
}
if len(pkgs) == 0 {
return nil
}
for name := range pkgs {
_, ok := dp.Aur[name]
if ok {
continue
}
pkg := dp.findSatisfierAurCache(name)
if pkg == nil {
continue
}
if explicit {
dp.Explicit.set(pkg.Name)
}
dp.Aur[pkg.Name] = pkg
for _, deps := range [3][]string{pkg.Depends, pkg.MakeDepends, pkg.CheckDepends} {
for _, dep := range deps {
newPackages.set(dep)
}
}
}
for dep := range newPackages {
if dp.hasSatisfier(dep) {
continue
}
_, isInstalled := dp.LocalDb.PkgCache().FindSatisfier(dep) //has satisfier installed: skip
hm := hideMenus
hideMenus = isInstalled == nil
repoPkg, inRepos := dp.SyncDb.FindSatisfier(dep) //has satisfier in repo: fetch it
hideMenus = hm
if isInstalled == nil && (config.ReBuild != "tree" || inRepos == nil) {
continue
}
if inRepos == nil {
dp.ResolveRepoDependency(repoPkg)
continue
}
//assume it's in the aur
//ditch the versioning because the RPC can't handle it
newAURPackages.set(dep)
}
err = dp.resolveAURPackages(newAURPackages, false)
return err
}
func (dp *depPool) ResolveRepoDependency(pkg *alpm.Package) {
dp.Repo[pkg.Name()] = pkg
pkg.Depends().ForEach(func(dep alpm.Depend) (err error) {
//have satisfier in dep tree: skip
if dp.hasSatisfier(dep.String()) {
return
}
//has satisfier installed: skip
_, isInstalled := dp.LocalDb.PkgCache().FindSatisfier(dep.String())
if isInstalled == nil {
return
}
//has satisfier in repo: fetch it
repoPkg, inRepos := dp.SyncDb.FindSatisfier(dep.String())
if inRepos != nil {
return
}
dp.ResolveRepoDependency(repoPkg)
return nil
})
}
func getDepPool(pkgs []string, warnings *aurWarnings) (*depPool, error) {
dp, err := makeDepPool()
if err != nil {
return nil, err
}
dp.Warnings = warnings
err = dp.ResolveTargets(pkgs)
return dp, err
}
func (dp *depPool) findSatisfierAur(dep string) *rpc.Pkg {
for _, pkg := range dp.Aur {
if satisfiesAur(dep, pkg) {
return pkg
}
}
return nil
}
// This is mostly used to promote packages from the cache
// to the Install list
// Provide a pacman style provider menu if there's more than one candidate
// This acts slightly differently from Pacman, It will give
// a menu even if a package with a matching name exists. I believe this
// method is better because most of the time you are choosing between
// foo and foo-git.
// Using Pacman's ways trying to install foo would never give you
// a menu.
// TODO: maybe intermix repo providers in the menu
func (dp *depPool) findSatisfierAurCache(dep string) *rpc.Pkg {
depName, _, _ := splitDep(dep)
seen := make(stringSet)
providers := makeProviders(depName)
if _, err := dp.LocalDb.PkgByName(depName); err == nil {
if pkg, ok := dp.AurCache[dep]; ok && pkgSatisfies(pkg.Name, pkg.Version, dep) {
return pkg
}
}
if cmdArgs.op == "Y" || cmdArgs.op == "yay" {
for _, pkg := range dp.AurCache {
if pkgSatisfies(pkg.Name, pkg.Version, dep) {
for _, target := range dp.Targets {
if target.Name == pkg.Name {
return pkg
}
}
}
}
}
for _, pkg := range dp.AurCache {
if seen.get(pkg.Name) {
continue
}
if pkgSatisfies(pkg.Name, pkg.Version, dep) {
providers.Pkgs = append(providers.Pkgs, pkg)
seen.set(pkg.Name)
continue
}
for _, provide := range pkg.Provides {
if provideSatisfies(provide, dep) {
providers.Pkgs = append(providers.Pkgs, pkg)
seen.set(pkg.Name)
continue
}
}
}
if providers.Len() == 1 {
return providers.Pkgs[0]
}
if providers.Len() > 1 {
sort.Sort(providers)
return providerMenu(dep, providers)
}
return nil
}
func (dp *depPool) findSatisfierRepo(dep string) *alpm.Package {
for _, pkg := range dp.Repo {
if satisfiesRepo(dep, pkg) {
return pkg
}
}
return nil
}
func (dp *depPool) hasSatisfier(dep string) bool {
return dp.findSatisfierRepo(dep) != nil || dp.findSatisfierAur(dep) != nil
}
func (dp *depPool) hasPackage(name string) bool {
for _, pkg := range dp.Repo {
if pkg.Name() == name {
return true
}
}
for _, pkg := range dp.Aur {
if pkg.Name == name {
return true
}
}
for _, pkg := range dp.Groups {
if pkg == name {
return true
}
}
return false
}