herocache

Documentation

Index

• type DNSCache
  • func NewDNSCache(sizeLimit uint32, logger zerolog.Logger, ipCollector module.HeroCacheMetrics, ...) *DNSCache
  • func (d *DNSCache) GetDomainIp(domain string) (*mempool.IpRecord, bool)
  • func (d *DNSCache) GetTxtRecord(domain string) (*mempool.TxtRecord, bool)
  • func (d *DNSCache) LockIPDomain(domain string) (bool, error)
  • func (d *DNSCache) LockTxtRecord(txt string) (bool, error)
  • func (d *DNSCache) PutIpDomain(domain string, addresses []net.IPAddr, timestamp int64) bool
  • func (d *DNSCache) PutTxtRecord(domain string, record []string, timestamp int64) bool
  • func (d *DNSCache) RemoveIp(domain string) bool
  • func (d *DNSCache) RemoveTxt(domain string) bool
  • func (d DNSCache) Size() (uint, uint)
  • func (d *DNSCache) UpdateIPDomain(domain string, addresses []net.IPAddr, timestamp int64) error
  • func (d *DNSCache) UpdateTxtRecord(txt string, records []string, timestamp int64) error
• type Transactions
  • func NewTransactions(limit uint32, logger zerolog.Logger, collector module.HeroCacheMetrics) *Transactions
  • func (t *Transactions) Add(tx *flow.TransactionBody) bool
  • func (t Transactions) All() []*flow.TransactionBody
  • func (t Transactions) ByID(txID flow.Identifier) (*flow.TransactionBody, bool)
  • func (t *Transactions) Clear()
  • func (t Transactions) Has(id flow.Identifier) bool
  • func (t Transactions) Hash() flow.Identifier
  • func (t *Transactions) Remove(id flow.Identifier) bool
  • func (t Transactions) Size() uint

Types

type DNSCache

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

func NewDNSCache

func NewDNSCache(sizeLimit uint32, logger zerolog.Logger, ipCollector module.HeroCacheMetrics, txtCollector module.HeroCacheMetrics) *DNSCache

func (*DNSCache) GetDomainIp

func (d *DNSCache) GetDomainIp(domain string) (*mempool.IpRecord, bool)

GetDomainIp returns the ip domain if exists in the cache. The boolean return value determines if domain exists in the cache.

func (*DNSCache) GetTxtRecord

func (d *DNSCache) GetTxtRecord(domain string) (*mempool.TxtRecord, bool)

GetTxtRecord returns the txt record if exists in the cache. The boolean return value determines if record exists in the cache.

func (*DNSCache) LockIPDomain

func (d *DNSCache) LockIPDomain(domain string) (bool, error)

LockIPDomain locks an ip address dns record if exists in the cache. The boolean return value determines whether attempt on locking was successful.

A locking attempt is successful when the domain record exists in the cache and has not been locked before. Once a domain record gets locked the only way to unlock it is through updating that record.

The locking process is defined to record that a resolving attempt is ongoing for an expired domain. So the locking happens to avoid any other parallel resolving

func (*DNSCache) LockTxtRecord

func (d *DNSCache) LockTxtRecord(txt string) (bool, error)

LockTxtRecord locks a txt address dns record if exists in the cache. The boolean return value determines whether attempt on locking was successful.

A locking attempt is successful when the domain record exists in the cache and has not been locked before. Once a domain record gets locked the only way to unlock it is through updating that record.

The locking process is defined to record that a resolving attempt is ongoing for an expired domain. So the locking happens to avoid any other parallel resolving.

func (*DNSCache) PutIpDomain

func (d *DNSCache) PutIpDomain(domain string, addresses []net.IPAddr, timestamp int64) bool

PutIpDomain adds the given ip domain into the cache.

func (*DNSCache) PutTxtRecord

func (d *DNSCache) PutTxtRecord(domain string, record []string, timestamp int64) bool

PutTxtRecord adds the given txt record into the cache.

func (*DNSCache) RemoveIp

func (d *DNSCache) RemoveIp(domain string) bool

RemoveIp removes an ip domain from cache.

func (*DNSCache) RemoveTxt

func (d *DNSCache) RemoveTxt(domain string) bool

RemoveTxt removes a txt record from cache.

func (DNSCache) Size

func (d DNSCache) Size() (uint, uint)

Size returns total domains maintained into this cache. The first returned value determines number of ip domains. The second returned value determines number of txt records.

func (*DNSCache) UpdateIPDomain

func (d *DNSCache) UpdateIPDomain(domain string, addresses []net.IPAddr, timestamp int64) error

UpdateIPDomain updates the dns record for the given ip domain with the new address and timestamp values.

func (*DNSCache) UpdateTxtRecord

func (d *DNSCache) UpdateTxtRecord(txt string, records []string, timestamp int64) error

UpdateTxtRecord updates the dns record for the given txt domain with the new address and timestamp values.

type Transactions

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

func NewTransactions

func NewTransactions(limit uint32, logger zerolog.Logger, collector module.HeroCacheMetrics) *Transactions

NewTransactions implements a transactions mempool based on hero cache.

func (*Transactions) Add

func (t *Transactions) Add(tx *flow.TransactionBody) bool

Add adds a transaction to the mempool.

func (Transactions) All

func (t Transactions) All() []*flow.TransactionBody

All returns all transactions from the mempool. Since it is using the HeroCache, All guarantees returning all transactions in the same order as they are added.

func (Transactions) ByID

func (t Transactions) ByID(txID flow.Identifier) (*flow.TransactionBody, bool)

ByID returns the transaction with the given ID from the mempool.

func (*Transactions) Clear

func (t *Transactions) Clear()

Clear removes all transactions stored in this mempool.

func (Transactions) Has

func (t Transactions) Has(id flow.Identifier) bool

Has checks whether the transaction with the given hash is currently in the memory pool.

func (Transactions) Hash

func (t Transactions) Hash() flow.Identifier

Hash will return a fingerprint hash representing the contents of the entire memory pool.

func (*Transactions) Remove

func (t *Transactions) Remove(id flow.Identifier) bool

Remove removes transaction from mempool.

func (Transactions) Size

func (t Transactions) Size() uint

Size returns total number of stored transactions.