From 107c1cdb09c575aa2f61d97f48d8587eb6bada4c Mon Sep 17 00:00:00 2001 From: Nathan Dench Date: Fri, 24 May 2019 15:16:44 +1000 Subject: Upgrade to 0.12 --- .../hashicorp/terraform/plans/changes_sync.go | 144 +++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 vendor/github.com/hashicorp/terraform/plans/changes_sync.go (limited to 'vendor/github.com/hashicorp/terraform/plans/changes_sync.go') diff --git a/vendor/github.com/hashicorp/terraform/plans/changes_sync.go b/vendor/github.com/hashicorp/terraform/plans/changes_sync.go new file mode 100644 index 0000000..6b4ff98 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/plans/changes_sync.go @@ -0,0 +1,144 @@ +package plans + +import ( + "fmt" + "sync" + + "github.com/hashicorp/terraform/addrs" + "github.com/hashicorp/terraform/states" +) + +// ChangesSync is a wrapper around a Changes that provides a concurrency-safe +// interface to insert new changes and retrieve copies of existing changes. +// +// Each ChangesSync is independent of all others, so all concurrent writers +// to a particular Changes must share a single ChangesSync. Behavior is +// undefined if any other caller makes changes to the underlying Changes +// object or its nested objects concurrently with any of the methods of a +// particular ChangesSync. +type ChangesSync struct { + lock sync.Mutex + changes *Changes +} + +// AppendResourceInstanceChange records the given resource instance change in +// the set of planned resource changes. +// +// The caller must ensure that there are no concurrent writes to the given +// change while this method is running, but it is safe to resume mutating +// it after this method returns without affecting the saved change. +func (cs *ChangesSync) AppendResourceInstanceChange(changeSrc *ResourceInstanceChangeSrc) { + if cs == nil { + panic("AppendResourceInstanceChange on nil ChangesSync") + } + cs.lock.Lock() + defer cs.lock.Unlock() + + s := changeSrc.DeepCopy() + cs.changes.Resources = append(cs.changes.Resources, s) +} + +// GetResourceInstanceChange searches the set of resource instance changes for +// one matching the given address and generation, returning it if it exists. +// +// If no such change exists, nil is returned. +// +// The returned object is a deep copy of the change recorded in the plan, so +// callers may mutate it although it's generally better (less confusing) to +// treat planned changes as immutable after they've been initially constructed. +func (cs *ChangesSync) GetResourceInstanceChange(addr addrs.AbsResourceInstance, gen states.Generation) *ResourceInstanceChangeSrc { + if cs == nil { + panic("GetResourceInstanceChange on nil ChangesSync") + } + cs.lock.Lock() + defer cs.lock.Unlock() + + if gen == states.CurrentGen { + return cs.changes.ResourceInstance(addr).DeepCopy() + } + if dk, ok := gen.(states.DeposedKey); ok { + return cs.changes.ResourceInstanceDeposed(addr, dk).DeepCopy() + } + panic(fmt.Sprintf("unsupported generation value %#v", gen)) +} + +// RemoveResourceInstanceChange searches the set of resource instance changes +// for one matching the given address and generation, and removes it from the +// set if it exists. +func (cs *ChangesSync) RemoveResourceInstanceChange(addr addrs.AbsResourceInstance, gen states.Generation) { + if cs == nil { + panic("RemoveResourceInstanceChange on nil ChangesSync") + } + cs.lock.Lock() + defer cs.lock.Unlock() + + dk := states.NotDeposed + if realDK, ok := gen.(states.DeposedKey); ok { + dk = realDK + } + + addrStr := addr.String() + for i, r := range cs.changes.Resources { + if r.Addr.String() != addrStr || r.DeposedKey != dk { + continue + } + copy(cs.changes.Resources[i:], cs.changes.Resources[i+1:]) + cs.changes.Resources = cs.changes.Resources[:len(cs.changes.Resources)-1] + return + } +} + +// AppendOutputChange records the given output value change in the set of +// planned value changes. +// +// The caller must ensure that there are no concurrent writes to the given +// change while this method is running, but it is safe to resume mutating +// it after this method returns without affecting the saved change. +func (cs *ChangesSync) AppendOutputChange(changeSrc *OutputChangeSrc) { + if cs == nil { + panic("AppendOutputChange on nil ChangesSync") + } + cs.lock.Lock() + defer cs.lock.Unlock() + + s := changeSrc.DeepCopy() + cs.changes.Outputs = append(cs.changes.Outputs, s) +} + +// GetOutputChange searches the set of output value changes for one matching +// the given address, returning it if it exists. +// +// If no such change exists, nil is returned. +// +// The returned object is a deep copy of the change recorded in the plan, so +// callers may mutate it although it's generally better (less confusing) to +// treat planned changes as immutable after they've been initially constructed. +func (cs *ChangesSync) GetOutputChange(addr addrs.AbsOutputValue) *OutputChangeSrc { + if cs == nil { + panic("GetOutputChange on nil ChangesSync") + } + cs.lock.Lock() + defer cs.lock.Unlock() + + return cs.changes.OutputValue(addr) +} + +// RemoveOutputChange searches the set of output value changes for one matching +// the given address, and removes it from the set if it exists. +func (cs *ChangesSync) RemoveOutputChange(addr addrs.AbsOutputValue) { + if cs == nil { + panic("RemoveOutputChange on nil ChangesSync") + } + cs.lock.Lock() + defer cs.lock.Unlock() + + addrStr := addr.String() + for i, o := range cs.changes.Outputs { + if o.Addr.String() != addrStr { + continue + } + copy(cs.changes.Outputs[i:], cs.changes.Outputs[i+1:]) + cs.changes.Outputs = cs.changes.Outputs[:len(cs.changes.Outputs)-1] + return + } +} -- cgit v1.2.3