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package
v0.47.0 Latest Latest
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 Go to latest Published: Jul 28, 2021 License: Apache-2.0 Imports: 14 Imported by: 0

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Index

Constants

View Source 
const IteratorPrefetchSize = 1000

IteratorPrefetchSize is the amount of records to maybeFetch from PG

View Source 
const MaxBatchDelay = time.Millisecond * 3

MaxBatchDelay - 3ms was chosen as a max delay time for critical path queries. It trades off amount of queries per second (and thus effectiveness of the batching mechanism) with added latency. Since reducing # of expensive operations is only beneficial when there are a lot of concurrent requests, 

the sweet spot is probably between 1-5 milliseconds (representing 200-1000 requests/second to the data store).

3ms of delay with ~300 requests/second per resource sounds like a reasonable tradeoff.

Variables

View Source 
var ErrIteratorClosed = errors.New("iterator already closed")

Functions

func FindMergeBase added in v0.41.1 

func FindMergeBase(ctx context.Context, getter CommitGetter, repositoryID graveler.RepositoryID, leftID, rightID graveler.CommitID) (*graveler.Commit, error)

FindMergeBase finds the best common ancestor according to the definition in the git-merge-base documentation: https://git-scm.com/docs/git-merge-base One common ancestor is better than another common ancestor if the latter is an ancestor of the former.

func ParseRef added in v0.44.1 

func ParseRef(r graveler.Ref) (graveler.RawRef, error)

func ResolveRawRef added in v0.44.1 

func ResolveRawRef(ctx context.Context, store Store, addressProvider ident.AddressProvider, repositoryID graveler.RepositoryID, rawRef graveler.RawRef) (*graveler.ResolvedRef, error)

Types

type BranchIterator 

type BranchIterator struct {
	// contains filtered or unexported fields
}

func NewBranchIterator 

func NewBranchIterator(ctx context.Context, db db.Database, repositoryID graveler.RepositoryID, prefetchSize int, opts ...BranchIteratorOption) *BranchIterator

func (*BranchIterator) Close 

func (ri *BranchIterator) Close()

func (*BranchIterator) Err 

func (ri *BranchIterator) Err() error

func (*BranchIterator) Next 

func (ri *BranchIterator) Next() bool

func (*BranchIterator) SeekGE 

func (ri *BranchIterator) SeekGE(id graveler.BranchID)

func (*BranchIterator) Value 

func (ri *BranchIterator) Value() *graveler.BranchRecord

type BranchIteratorOption added in v0.45.1 

type BranchIteratorOption func(bi *BranchIterator)

func WithOrderBy added in v0.45.1 

func WithOrderBy(orderByColumn string) BranchIteratorOption

type BranchLocker 

type BranchLocker struct {
	// contains filtered or unexported fields
}

BranchLocker enforces the branch locking logic with Postgres advisory lock The lock can be held by an arbitrary number of Writers or a single MetadataUpdater.

func NewBranchLocker 

func NewBranchLocker(db db.Database) *BranchLocker

func (*BranchLocker) MetadataUpdater 

func (l *BranchLocker) MetadataUpdater(ctx context.Context, repositoryID graveler.RepositoryID, branchID graveler.BranchID, lockedFn graveler.BranchLockerFunc) (interface{}, error)

MetadataUpdater tries to lock as committer using a Postgres advisory lock for the span of calling `lockedFn`. It returns ErrLockNotAcquired if it fails to acquire the lock.

func (*BranchLocker) Writer 

func (l *BranchLocker) Writer(ctx context.Context, repositoryID graveler.RepositoryID, branchID graveler.BranchID, lockedFn graveler.BranchLockerFunc) (interface{}, error)

Writer tries to acquire a write lock using a Postgres advisory lock for the span of calling `lockedFn`. Returns ErrLockNotAcquired if it cannot acquire the lock.

type CommitGetter 

type CommitGetter interface {
	GetCommit(ctx context.Context, repositoryID graveler.RepositoryID, commitID graveler.CommitID) (*graveler.Commit, error)
}

type CommitIterator 

type CommitIterator struct {
	// contains filtered or unexported fields
}

func NewCommitIterator 

func NewCommitIterator(ctx context.Context, db db.Database, repositoryID graveler.RepositoryID, start graveler.CommitID) *CommitIterator

func (*CommitIterator) Close 

func (ci *CommitIterator) Close()

func (*CommitIterator) Err 

func (ci *CommitIterator) Err() error

func (*CommitIterator) Next 

func (ci *CommitIterator) Next() bool

func (*CommitIterator) SeekGE 

func (ci *CommitIterator) SeekGE(id graveler.CommitID)

SeekGE skip under the point of 'id' commit ID based on a a new 

The list of commit

func (*CommitIterator) Value 

func (ci *CommitIterator) Value() *graveler.CommitRecord

type CommitsGenerationPriorityQueue added in v0.41.1 

type CommitsGenerationPriorityQueue []*graveler.CommitRecord

CommitsGenerationPriorityQueue implements heap.Interface such that the commit with the greatest Generation value is at the root of the heap.

func NewCommitsGenerationPriorityQueue added in v0.41.1 

func NewCommitsGenerationPriorityQueue() CommitsGenerationPriorityQueue

func (CommitsGenerationPriorityQueue) Len added in v0.41.1 

func (c CommitsGenerationPriorityQueue) Len() int

func (CommitsGenerationPriorityQueue) Less added in v0.41.1 

func (c CommitsGenerationPriorityQueue) Less(i, j int) bool

func (*CommitsGenerationPriorityQueue) Pop added in v0.41.1 

func (c *CommitsGenerationPriorityQueue) Pop() interface{}

func (*CommitsGenerationPriorityQueue) Push added in v0.41.1 

func (c *CommitsGenerationPriorityQueue) Push(x interface{})

func (CommitsGenerationPriorityQueue) Swap added in v0.41.1 

func (c CommitsGenerationPriorityQueue) Swap(i, j int)

type Manager 

type Manager struct {
	// contains filtered or unexported fields
}

func NewPGRefManager 

func NewPGRefManager(executor batch.Batcher, db db.Database, addressProvider ident.AddressProvider) *Manager

func (*Manager) AddCommit 

func (m *Manager) AddCommit(ctx context.Context, repositoryID graveler.RepositoryID, commit graveler.Commit) (graveler.CommitID, error)

func (*Manager) CreateBareRepository 

func (m *Manager) CreateBareRepository(ctx context.Context, repositoryID graveler.RepositoryID, repository graveler.Repository) error

func (*Manager) CreateRepository 

func (m *Manager) CreateRepository(ctx context.Context, repositoryID graveler.RepositoryID, repository graveler.Repository, token graveler.StagingToken) error

func (*Manager) CreateTag 

func (m *Manager) CreateTag(ctx context.Context, repositoryID graveler.RepositoryID, tagID graveler.TagID, commitID graveler.CommitID) error

func (*Manager) DeleteBranch 

func (m *Manager) DeleteBranch(ctx context.Context, repositoryID graveler.RepositoryID, branchID graveler.BranchID) error

func (*Manager) DeleteRepository 

func (m *Manager) DeleteRepository(ctx context.Context, repositoryID graveler.RepositoryID) error

func (*Manager) DeleteTag 

func (m *Manager) DeleteTag(ctx context.Context, repositoryID graveler.RepositoryID, tagID graveler.TagID) error

func (*Manager) FillGenerations added in v0.41.1 

func (m *Manager) FillGenerations(ctx context.Context, repositoryID graveler.RepositoryID) error

func (*Manager) FindMergeBase 

func (m *Manager) FindMergeBase(ctx context.Context, repositoryID graveler.RepositoryID, commitIDs ...graveler.CommitID) (*graveler.Commit, error)

func (*Manager) GetBranch 

func (m *Manager) GetBranch(ctx context.Context, repositoryID graveler.RepositoryID, branchID graveler.BranchID) (*graveler.Branch, error)

func (*Manager) GetCommit 

func (m *Manager) GetCommit(ctx context.Context, repositoryID graveler.RepositoryID, commitID graveler.CommitID) (*graveler.Commit, error)

func (*Manager) GetCommitByPrefix 

func (m *Manager) GetCommitByPrefix(ctx context.Context, repositoryID graveler.RepositoryID, prefix graveler.CommitID) (*graveler.Commit, error)

func (*Manager) GetRepository 

func (m *Manager) GetRepository(ctx context.Context, repositoryID graveler.RepositoryID) (*graveler.Repository, error)

func (*Manager) GetTag 

func (m *Manager) GetTag(ctx context.Context, repositoryID graveler.RepositoryID, tagID graveler.TagID) (*graveler.CommitID, error)

func (*Manager) ListBranches 

func (m *Manager) ListBranches(ctx context.Context, repositoryID graveler.RepositoryID) (graveler.BranchIterator, error)

func (*Manager) ListCommits 

func (m *Manager) ListCommits(ctx context.Context, repositoryID graveler.RepositoryID) (graveler.CommitIterator, error)

func (*Manager) ListRepositories 

func (m *Manager) ListRepositories(ctx context.Context) (graveler.RepositoryIterator, error)

func (*Manager) ListTags 

func (m *Manager) ListTags(ctx context.Context, repositoryID graveler.RepositoryID) (graveler.TagIterator, error)

func (*Manager) Log 

func (m *Manager) Log(ctx context.Context, repositoryID graveler.RepositoryID, from graveler.CommitID) (graveler.CommitIterator, error)

func (*Manager) ParseRef added in v0.44.1 

func (m *Manager) ParseRef(ref graveler.Ref) (graveler.RawRef, error)

func (*Manager) ResolveRawRef added in v0.44.1 

func (m *Manager) ResolveRawRef(ctx context.Context, repositoryID graveler.RepositoryID, raw graveler.RawRef) (*graveler.ResolvedRef, error)

func (*Manager) SetBranch 

func (m *Manager) SetBranch(ctx context.Context, repositoryID graveler.RepositoryID, branchID graveler.BranchID, branch graveler.Branch) error

type OrderedCommitIterator 

type OrderedCommitIterator struct {
	// contains filtered or unexported fields
}

func NewOrderedCommitIterator 

func NewOrderedCommitIterator(ctx context.Context, database db.Database, repositoryID graveler.RepositoryID, prefetchSize int, opts ...OrderedCommitIteratorOption) *OrderedCommitIterator

NewOrderedCommitIterator returns an iterator over all commits in the given repository. Ordering is based on the Commit ID value.

func (*OrderedCommitIterator) Close 

func (iter *OrderedCommitIterator) Close()

func (*OrderedCommitIterator) Err 

func (iter *OrderedCommitIterator) Err() error

func (*OrderedCommitIterator) Next 

func (iter *OrderedCommitIterator) Next() bool

func (*OrderedCommitIterator) SeekGE 

func (iter *OrderedCommitIterator) SeekGE(id graveler.CommitID)

func (*OrderedCommitIterator) Value 

func (iter *OrderedCommitIterator) Value() *graveler.CommitRecord

type OrderedCommitIteratorOption added in v0.45.1 

type OrderedCommitIteratorOption func(oci *OrderedCommitIterator)

func WithOnlyAncestryLeaves added in v0.45.1 

func WithOnlyAncestryLeaves() OrderedCommitIteratorOption

WithOnlyAncestryLeaves causes the iterator to return only commits which are not the first parent of any other commit. Consider a commit graph where all non-first-parent edges are removed. This graph is a tree, and ancestry leaves are its leaves.

type RepositoryIterator 

type RepositoryIterator struct {
	// contains filtered or unexported fields
}

func NewRepositoryIterator 

func NewRepositoryIterator(ctx context.Context, db db.Database, fetchSize int) *RepositoryIterator

func (*RepositoryIterator) Close 

func (ri *RepositoryIterator) Close()

func (*RepositoryIterator) Err 

func (ri *RepositoryIterator) Err() error

func (*RepositoryIterator) Next 

func (ri *RepositoryIterator) Next() bool

func (*RepositoryIterator) SeekGE 

func (ri *RepositoryIterator) SeekGE(id graveler.RepositoryID)

func (*RepositoryIterator) Value 

func (ri *RepositoryIterator) Value() *graveler.RepositoryRecord

type Store 

type Store interface {
	GetBranch(ctx context.Context, repositoryID graveler.RepositoryID, branchID graveler.BranchID) (*graveler.Branch, error)
	GetTag(ctx context.Context, repositoryID graveler.RepositoryID, tagID graveler.TagID) (*graveler.CommitID, error)
	GetCommitByPrefix(ctx context.Context, repositoryID graveler.RepositoryID, prefix graveler.CommitID) (*graveler.Commit, error)
	GetCommit(ctx context.Context, repositoryID graveler.RepositoryID, prefix graveler.CommitID) (*graveler.Commit, error)
}

type TagIterator 

type TagIterator struct {
	// contains filtered or unexported fields
}

func NewTagIterator 

func NewTagIterator(ctx context.Context, db db.Database, repositoryID graveler.RepositoryID, fetchSize int) *TagIterator

func (*TagIterator) Close 

func (ri *TagIterator) Close()

func (*TagIterator) Err 

func (ri *TagIterator) Err() error

func (*TagIterator) Next 

func (ri *TagIterator) Next() bool

func (*TagIterator) SeekGE 

func (ri *TagIterator) SeekGE(id graveler.TagID)

func (*TagIterator) Value 

func (ri *TagIterator) Value() *graveler.TagRecord

Source Files

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