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database: reduce InsertPackages transaction

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Inserting packages in a single transaction does not actually buy us anything as we often delete quads during an insertion and thus, Cayley could not use COPY and do a single round-trip. Inserting multiple packages in a single transaction actually creates deadlocks when a transaction tries to insert (A,B) and another one tries to insert (B,A).
This commit is contained in:
Quentin Machu 2015-11-13 17:49:08 -05:00
parent a10260c80d
commit 7f1ff8f979
1 changed files with 1 additions and 39 deletions
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40
database/package.go
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@ -32,8 +32,6 @@ const (
FieldPackageVersion = "version"
FieldPackageNextVersion = "nextVersion"
FieldPackagePreviousVersion = "previousVersion"
insertPackagesBatchSize = 5
)
var FieldPackageAll = []string{FieldPackageOS, FieldPackageName, FieldPackageVersion, FieldPackageNextVersion, FieldPackagePreviousVersion}
@ -123,24 +121,11 @@ func InsertPackages(packageParameters []*Package) error {
}
}
// Create required data structures
t := cayley.NewTransaction()
packagesInTransaction := 0
cachedPackagesByBranch := make(map[string]map[string]*Package)
// Iterate over all the packages we need to insert
for _, packageParameter := range packageParameters {
branch := packageParameter.Branch()
t := cayley.NewTransaction()
// Is the package already existing ?
if _, branchExistsLocally := cachedPackagesByBranch[branch]; branchExistsLocally {
if pkg, _ := cachedPackagesByBranch[branch][packageParameter.Key()]; pkg != nil {
packageParameter.Node = pkg.Node
continue
}
} else {
cachedPackagesByBranch[branch] = make(map[string]*Package)
}
pkg, err := FindOnePackage(packageParameter.OS, packageParameter.Name, packageParameter.Version, []string{})
if err != nil && err != cerrors.ErrNotFound {
return err
@ -155,9 +140,6 @@ func InsertPackages(packageParameters []*Package) error {
if err != nil {
return err
}
for _, p := range cachedPackagesByBranch[branch] {
branchPackages = append(branchPackages, p)
}
if len(branchPackages) == 0 {
// The branch does not exist yet
@ -171,7 +153,6 @@ func InsertPackages(packageParameters []*Package) error {
Version: types.MaxVersion,
}
endPackage.Node = endPackage.GetNode()
cachedPackagesByBranch[branch][endPackage.Key()] = endPackage
t.AddQuad(cayley.Quad(endPackage.Node, FieldIs, FieldPackageIsValue, ""))
t.AddQuad(cayley.Quad(endPackage.Node, FieldPackageOS, endPackage.OS, ""))
@ -188,7 +169,6 @@ func InsertPackages(packageParameters []*Package) error {
Version: packageParameter.Version,
}
newPackage.Node = newPackage.GetNode()
cachedPackagesByBranch[branch][newPackage.Key()] = newPackage
t.AddQuad(cayley.Quad(newPackage.Node, FieldIs, FieldPackageIsValue, ""))
t.AddQuad(cayley.Quad(newPackage.Node, FieldPackageOS, newPackage.OS, ""))
@ -206,7 +186,6 @@ func InsertPackages(packageParameters []*Package) error {
Version: types.MinVersion,
}
startPackage.Node = startPackage.GetNode()
cachedPackagesByBranch[branch][startPackage.Key()] = startPackage
t.AddQuad(cayley.Quad(startPackage.Node, FieldIs, FieldPackageIsValue, ""))
t.AddQuad(cayley.Quad(startPackage.Node, FieldPackageOS, startPackage.OS, ""))
@ -230,7 +209,6 @@ func InsertPackages(packageParameters []*Package) error {
// Create the package
newPackage := &Package{OS: packageParameter.OS, Name: packageParameter.Name, Version: packageParameter.Version}
newPackage.Node = "package:" + utils.Hash(newPackage.Key())
cachedPackagesByBranch[branch][newPackage.Key()] = newPackage
packageParameter.Node = newPackage.Node
t.AddQuad(cayley.Quad(newPackage.Node, FieldIs, FieldPackageIsValue, ""))
@ -273,23 +251,7 @@ func InsertPackages(packageParameters []*Package) error {
t.AddQuad(cayley.Quad(newPackage.Node, FieldPackageNextVersion, succ.Node, ""))
}
packagesInTransaction = packagesInTransaction + 1
// Apply transaction
if packagesInTransaction >= insertPackagesBatchSize {
if err := store.ApplyTransaction(t); err != nil {
log.Errorf("failed transaction (InsertPackages): %s", err)
return ErrTransaction
}
t = cayley.NewTransaction()
cachedPackagesByBranch = make(map[string]map[string]*Package)
packagesInTransaction = 0
}
}
// Apply transaction
if packagesInTransaction > 0 {
if err := store.ApplyTransaction(t); err != nil {
log.Errorf("failed transaction (InsertPackages): %s", err)
return ErrTransaction