* plug forkchoice to blockchain service's block processing
* fixed tests
* more fixes...
* clean ups
* fixed test
* Update beacon-chain/blockchain/block_processing.go
* merged with 2006 and started fixing tests
* remove prints
* fixed tests
* lint
* include ops service
* if there's a skip slot, slot--
* fixed typo
* started working on test
* no fork choice in propose
* bleh, need to fix state generator first
* state gen takes input slot
* feedback
* fixed tests
* preston's feedback
* fmt
* removed extra logging
* add more logs
* fixed validator attest
* builds
* fixed save block
* children fix
* removed verbose logs
* fix fork choice
* right logs
* Add Prometheus Counter for Reorg (#2051)
* fetch every slot (#2052)
* test Fixes
* lint
* only regenerate state if there was a reorg
* better logging
* fixed seed
* better logging
* process skip slots in assignment requests
* fix lint
* disable state root computation
* filter attestations in regular sync
* log important items
* better info logs
* added spans to stategen
* span in stategen
* set validator deadline
* randao stuff
* disable sig verify
* lint
* lint
* save only using historical states
* use new goroutine for handling sync messages
* change default buffer sizes
* better p2p
* rem some useless logs
* lint
* sync tests complete
* complete tests
* tests fixed
* lint
* fix flakey att service
* PR feedback
* undo k8s changes
* Update beacon-chain/blockchain/block_processing.go
* Update beacon-chain/sync/regular_sync.go
* Add feature flag to enable compute state root
* add comment
* gazelle lint fix
* remove hash field for state request
* change to finalized state root
* refactor code for bug
* add in saving of finalized state
* add method to db
* adding finalized state root
* add new changes
* add in new changes
* add in return vars
* goimports
* review comments
* error message
* fix broken build
* fix cache state tests
* lint
* adding check for chainHead
* add batch block limit
* adding state root
* removing genesisHash
* removing setBlockForInitialSync
* fixing tests
* remove obsolete check
* changing to check for state initialization
* changing var name
* fix test
* add in tests
* fix all tests
* lint
* reduce test time
* merge fixes
* gazelle
* clean up test
* adding test setup
* add chainstart check to sync querier
* goimports
* goimports
* backend cleanup
* adding getters
* lint
* moving to db
* gazelle
* adding more services setup
* adding more changes
* adding different test setups
* other merge issues
* imports
* fixing keys
* get intial sync able to be set up
* new changes and gazelle
* use simulated p2p
* everything finally works
* unexport fields
* revert changes from merge
* remove mock server
* add documentation
* gazelle
* add another node
* review comments
* fix tests
* syncHealth removed capitalization from an error string
* replaced error variable names in testStatus()
* TestStatus splits into 3 separate tests
* unit test refinement + travis resolved issues
* modified isSynced in querier.go + deleted uncommented code
* removed conditional logic from two unit tests
* TestStatus_ReturnsErrorWhenNotSynced
* moved defer TeardownDB outside setupSyncService
* /healthz part1
* lint, fix
* lints and todos
* add p2p status test
* Add test for service registry Statuses
* fix my fake errors for the linter
* Test healthz handler
* Run gazelle
* polling interval
* adding proto message
* changing proto messages
* changing naming
* adding slot functionality
* initial sync working
* new changes
* more sync fixes
* its working now
* finally working
* add tests
* fix tests
* tests
* adding tests
* lint
* log checks
* making changes to simulator
* update logs
* fix tests
* get sync to work with crystallized state
* fixing race
* making requested changes
* unexport
* documentation
* gazelle and fix merge conflicts
* adding repeated requests
* fix lint
* adding new clock , db methods, and util func
* revert change to test
* gazelle
* add in test
* gazelle
* finally working
* save slot
* fix lint and constant
* adding proto messages
* adding fields
* adding new service
* new changes
* checking in file from syncFix
* fixing test
* add test
* adding to node
* goimports
* adding query service to sync services
* sync working
* finally works
* fix test
* lint
* fix build
* fix test
* Remove error checking for type assertions on p2p messages. The code should fail earlier in the p2p layer. Also fixed format on some TODOs
* format TODO again
* Add a bit more tests for p2p stuff
* goimports on feed_mock
* remove unused import
* Persist Dag
* Add schema
* Add new message
* add mapping
* Adding check to save block
* Removing blocks mapping
* Make changes to block processing
* Change from mapping to a slice of hashes
* Adding tests to core
* adding more tests
* Fixing service test
* Add comments and fix bazel
* fix lint
* fix conflicts
* addressing review comments
* Removing references to active
* fixing tests with active state
* Protytype for #440: Persist blocks and latest state in DB
* simplify code
* removing block registry
* fix test
* adding block removal/iterator
* Addressing review comments
* Addressing comments
* Adding block request
* removing extra line
* making vars private and adding canonical key
* fix lint
* splitting methods
* adding more changes
* lint
* improving coverage
* removing decodeslotnumber
* Able to search for and send blocks
* adding core tests
* adding tests
* adding documentation
* addressing raul's comments
* lint and gazelle
* addressing yutaro's comments
* improving coverage
* improve coverage
* improving coverage
* begin with a block/state dag approach in prep for fork choice
* add TODOs for fork choice items, add data structure for forks
* remove syncing and processing states for incoming block sync
* simulator only broadcasts blocks now, no more state simulation
* fix sim tests, no more state sim
* bazel rerun
* naive fork choice
* split update head routine
* pesky race conditions
* fork choice rule works
* dag + fork choice working
* canonical head storage across sessions
* todo: save dag
* no more stalling after 10 blocks, using event feeds
* address review
* sync instead uses event feed
* refactored pure funcs into casper package
* tests pass
* fix lint
* refactor get blockhash
* refactor blockhashforslot
* event feed for incoming blocks in chainservice
* use config
* addressed all comments
* fix typo
* address yutaro comment
* using db interface
* check if parent hash in previous slot DAG
* works
* tests
* drop ffg suffix
* bazel gazelle
* full cov validators by height shard
* gazelle
* state tests
* all state tests
* 100% cov types and 99% cover casper
* cov up
* 80% blockchain cov
* fix lint
* Initial commit to extract initial sync code
* Add stop/resume of sync/intialsync
* bazel run
* gometalinter
* add tests
* cleanup
* build fixes
* use infof rather than errorf if sync is not in correct state
* Add TODO comment detailing eventual completion of transition from initial sync to sync
* fix build
* pr comments
* fix tests
* bump
* Adding proto topics
* Adding crystallized state request
* Reverting shanges to proto
* Adding db checks
* get crystallised state
* Finalize epoch for mapping
* more changes
* cleaning up main routine
* adding tests
* fix test
* Adding ability to save blocks
* Adding block fetcher
* Another test for setting finalized epoch
* adding final tests
* finished tests
* adding comments
* gazelle
* Making requested changes
* Fixing lint
* stop sync from exiting
* fixing lint
* lint
* Adding new request type to proto
* Making changes to block/state requests
* Change tests
* fixing error messages
* gazelle and lint
* adding back crystallised state
* fix tests
* Fixing merge conflicts
* Addressing review comments
* Changing back to one service
* removing case
