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|
package service
import (
"context"
"os"
"codeberg.org/lindenii/furgit/format/pack/ingest"
)
// Execute validates one receive-pack request, optionally ingests its pack into
// quarantine, runs the optional hook, and applies allowed ref updates.
func (service *Service) Execute(ctx context.Context, req *Request) (*Result, error) {
result := &Result{
Commands: make([]CommandResult, 0, len(req.Commands)),
}
var (
quarantineName string
quarantineRoot *os.Root
err error
)
if req.PackExpected {
if req.Pack == nil {
result.UnpackError = "missing pack stream"
fillCommandErrors(result, req.Commands, "missing pack stream")
return result, nil
}
if service.opts.ObjectsRoot == nil {
result.UnpackError = "objects root not configured"
fillCommandErrors(result, req.Commands, "objects root not configured")
return result, nil
}
quarantineName, quarantineRoot, err = service.createQuarantineRoot()
if err != nil {
result.UnpackError = err.Error()
fillCommandErrors(result, req.Commands, err.Error())
return result, nil
}
defer func() {
_ = quarantineRoot.Close()
_ = service.opts.ObjectsRoot.RemoveAll(quarantineName)
}()
quarantinePackRoot, err := service.openQuarantinePackRoot(quarantineRoot)
if err != nil {
result.UnpackError = err.Error()
fillCommandErrors(result, req.Commands, err.Error())
return result, nil
}
defer func() {
_ = quarantinePackRoot.Close()
}()
ingested, err := ingest.Ingest(
req.Pack,
quarantinePackRoot,
service.opts.Algorithm,
true,
true,
service.opts.ExistingObjects,
)
if err != nil {
result.UnpackError = err.Error()
fillCommandErrors(result, req.Commands, err.Error())
return result, nil
}
result.Ingest = &ingested
}
for _, command := range req.Commands {
result.Planned = append(result.Planned, PlannedUpdate{
Name: command.Name,
OldID: command.OldID,
NewID: command.NewID,
Delete: isDelete(command),
})
}
if len(req.Commands) == 0 {
return result, nil
}
allowedCommands := append([]Command(nil), req.Commands...)
allowedIndices := make([]int, 0, len(req.Commands))
for index := range req.Commands {
allowedIndices = append(allowedIndices, index)
}
rejected := make(map[int]string)
if service.opts.Hook != nil {
quarantinedObjects, err := service.openQuarantinedObjects(quarantineName)
if err != nil {
fillCommandErrors(result, req.Commands, err.Error())
return result, nil
}
defer func() {
_ = quarantinedObjects.Close()
}()
decisions, err := service.opts.Hook(ctx, HookRequest{
Refs: service.opts.Refs,
ExistingObjects: service.opts.ExistingObjects,
QuarantinedObjects: quarantinedObjects,
Updates: buildHookUpdates(req.Commands),
PushOptions: append([]string(nil), req.PushOptions...),
})
if err != nil {
fillCommandErrors(result, req.Commands, err.Error())
return result, nil
}
if len(decisions) != len(req.Commands) {
fillCommandErrors(result, req.Commands, "hook returned wrong number of update decisions")
return result, nil
}
allowedCommands = allowedCommands[:0]
allowedIndices = allowedIndices[:0]
for index, decision := range decisions {
if decision.Accept {
allowedCommands = append(allowedCommands, req.Commands[index])
allowedIndices = append(allowedIndices, index)
continue
}
message := decision.Message
if message == "" {
message = "rejected by hook"
}
rejected[index] = message
}
if req.Atomic && len(rejected) != 0 {
result.Commands = make([]CommandResult, 0, len(req.Commands))
for index, command := range req.Commands {
message := rejected[index]
if message == "" {
message = "atomic push rejected by hook"
}
result.Commands = append(result.Commands, resultForHookRejection(command, message))
}
return result, nil
}
}
if len(allowedCommands) == 0 {
result.Commands = mergeCommandResults(req.Commands, rejected, nil, nil)
return result, nil
}
if req.PackExpected {
// Git migrates quarantined objects into permanent storage immediately
// before starting ref updates.
err = service.promoteQuarantine(quarantineName, quarantineRoot)
if err != nil {
result.UnpackError = err.Error()
fillCommandErrors(result, req.Commands, err.Error())
return result, nil
}
}
if req.Atomic {
subresult := &Result{}
err := service.applyAtomic(subresult, allowedCommands)
if err != nil {
return result, err
}
result.Commands = mergeCommandResults(req.Commands, rejected, subresult.Commands, allowedIndices)
result.Applied = subresult.Applied
return result, nil
}
subresult := &Result{}
err = service.applyBatch(subresult, allowedCommands)
if err != nil {
return result, err
}
result.Commands = mergeCommandResults(req.Commands, rejected, subresult.Commands, allowedIndices)
result.Applied = subresult.Applied
return result, nil
}
|
