lite2: fix tendermint lite sub command (#4505)

* lite2: fix tendermint lite sub command

- better logging
- chainID as an argument
- more examples

* one more log msg

* lite2: fire update right away after start

* turn off auto update in verification tests

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

lite2/client.go

@@ -166,12 +166,14 @@ func NewClient(
 	}
 
 	if c.latestTrustedHeader != nil {
+		c.logger.Info("Checking trusted header using options")
 		if err := c.checkTrustedHeaderUsingOptions(trustOptions); err != nil {
 			return nil, err
 		}
 	}
 
 	if c.latestTrustedHeader == nil || c.latestTrustedHeader.Height < trustOptions.Height {
+		c.logger.Info("Downloading trusted header using options")
 		if err := c.initializeWithTrustOptions(trustOptions); err != nil {
 			return nil, err
 		}
@@ -258,7 +260,7 @@ func (c *Client) restoreTrustedHeaderAndVals() error {
 		c.latestTrustedHeader = trustedHeader
 		c.latestTrustedVals = trustedVals
 
-		c.logger.Debug("Restored trusted header and vals", "height", lastHeight)
+		c.logger.Info("Restored trusted header and vals", "height", lastHeight)
 	}
 
 	return nil
@@ -930,6 +932,11 @@ func (c *Client) removeWitness(idx int) {
 func (c *Client) autoUpdateRoutine() {
 	defer c.routinesWaitGroup.Done()
 
+	err := c.Update(time.Now())
+	if err != nil {
+		c.logger.Error("Error during auto update", "err", err)
+	}
+
 	ticker := time.NewTicker(c.updatePeriod)
 	defer ticker.Stop()
 
@@ -1013,6 +1020,7 @@ func (c *Client) signedHeaderFromPrimary(height int64) (*types.SignedHeader, err
 		if err == provider.ErrSignedHeaderNotFound {
 			return nil, err
 		}
+		c.logger.Error("Failed to get signed header from primary", "attempt", attempt, "err", err)
 		time.Sleep(backoffTimeout(attempt))
 	}
 
@@ -1036,6 +1044,7 @@ func (c *Client) validatorSetFromPrimary(height int64) (*types.ValidatorSet, err
 		if err == nil || err == provider.ErrValidatorSetNotFound {
 			return vals, err
 		}
+		c.logger.Error("Failed to get validator set from primary", "attempt", attempt, "err", err)
 		time.Sleep(backoffTimeout(attempt))
 	}
 

lite2/client_test.go

@@ -154,6 +154,7 @@ func TestClient_SequentialVerification(t *testing.T) {
 				)},
 				dbs.New(dbm.NewMemDB(), chainID),
 				SequentialVerification(),
+				UpdatePeriod(0),
 			)
 
 			if tc.initErr {
@@ -280,6 +281,7 @@ func TestClient_SkippingVerification(t *testing.T) {
 				)},
 				dbs.New(dbm.NewMemDB(), chainID),
 				SkippingVerification(DefaultTrustLevel),
+				UpdatePeriod(0),
 			)
 			if tc.initErr {
 				require.Error(t, err)