From d88441025fe58de094a89947cb17b54c36f5487b Mon Sep 17 00:00:00 2001
From: lhendre <lhendre2@gmail.com>
Date: Wed, 30 Jan 2019 02:40:36 -0500
Subject: cmd,eth: 16400 Add an option to stop geth once in sync.  WIP for
 light mode (#17321)

* cmd, eth: Added in the flag to step geth once sync based on input

* cmd, eth: 16400 Add an option to stop geth once in sync.

* cmd: 16400 Add an option to stop geth once in sync. WIP

* cmd/geth/main, les/fletcher: added in light mode support

* cmd/geth/main, les/fletcher: Cleaned Comments and code for light mode

* cmd: 16400 Fixed formatting issue and cleaned code

* cmd, eth, les: 16400 Fixed formatting issues

* cmd, eth, les: Performed gofmt to update formatting

* cmd, eth, les: Fixed bugs resulting formatting

* cmd/geth, eth/, les: switched to downloader event

* eth: Fixed styling and gen_config

* eth/: Fix nil error in config file

* cmd/geth: Updated countdown log

* les/fetcher.go: Removed depcreated channel

* eth/downloader.go: Removed deprecated select

* cmd/geth, cmd/utils: Fixed minor issues

* eth: Reverted config files to proper format

* eth: Fixed typo in config file

* cmd/geth, eth/down: Updated code to use header time stamp

* eth/downloader: Changed the time threshold to 10 minutes

* cmd/geth, eth/downloader: Updated downloading event to pass latest header

* cmd/geth: Updated main to use right timer object

* cmd/geth: Removed unused failed event

* cmd/geth: added in correct time field with type assertion

* cmd/geth, cmd/utils: Updated flag to use boolean

* cmd/geth, cmd/utils, eth/downloader: Cleaned up code based on recommendations

* cmd/geth: Removed unneeded import

* cmd/geth, eth/downloader: fixed event field and suggested changes

* cmd/geth, cmd/utils: Updated flag and linting issue
---
 eth/downloader/downloader.go | 5 ++---
 eth/downloader/events.go     | 6 +++++-
 2 files changed, 7 insertions(+), 4 deletions(-)

(limited to 'eth')

diff --git a/eth/downloader/downloader.go b/eth/downloader/downloader.go
index 4db689f73..58d19254c 100644
--- a/eth/downloader/downloader.go
+++ b/eth/downloader/downloader.go
@@ -415,7 +415,8 @@ func (d *Downloader) syncWithPeer(p *peerConnection, hash common.Hash, td *big.I
 		if err != nil {
 			d.mux.Post(FailedEvent{err})
 		} else {
-			d.mux.Post(DoneEvent{})
+			latest := d.lightchain.CurrentHeader()
+			d.mux.Post(DoneEvent{latest})
 		}
 	}()
 	if p.version < 62 {
@@ -1369,7 +1370,6 @@ func (d *Downloader) processHeaders(origin uint64, pivot uint64, td *big.Int) er
 			}
 			// Otherwise split the chunk of headers into batches and process them
 			gotHeaders = true
-
 			for len(headers) > 0 {
 				// Terminate if something failed in between processing chunks
 				select {
@@ -1432,7 +1432,6 @@ func (d *Downloader) processHeaders(origin uint64, pivot uint64, td *big.Int) er
 				headers = headers[limit:]
 				origin += uint64(limit)
 			}
-
 			// Update the highest block number we know if a higher one is found.
 			d.syncStatsLock.Lock()
 			if d.syncStatsChainHeight < origin {
diff --git a/eth/downloader/events.go b/eth/downloader/events.go
index 64905b8f2..25255a3a7 100644
--- a/eth/downloader/events.go
+++ b/eth/downloader/events.go
@@ -16,6 +16,10 @@
 
 package downloader
 
-type DoneEvent struct{}
+import "github.com/ethereum/go-ethereum/core/types"
+
+type DoneEvent struct {
+	Latest *types.Header
+}
 type StartEvent struct{}
 type FailedEvent struct{ Err error }
-- 
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