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Better logging for Graphsync traversal #167

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merged 4 commits into from
Apr 26, 2021
Merged

Better logging for Graphsync traversal #167

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4f60460
log gs traversal
aarshkshah1992 Apr 26, 2021
c1e0d87
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aarshkshah1992 Apr 26, 2021
1063629
add debug logs
aarshkshah1992 Apr 26, 2021
e9fb83b
add debug logs
aarshkshah1992 Apr 26, 2021
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17 changes: 15 additions & 2 deletions responsemanager/runtraversal/runtraversal.go
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Original file line number Diff line number Diff line change
Expand Up @@ -4,12 +4,14 @@ import (
"bytes"
"io"

"github.com/ipfs/go-graphsync/ipldutil"
logging "github.com/ipfs/go-log"
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ipld "github.com/ipld/go-ipld-prime"
"github.com/ipld/go-ipld-prime/traversal"

"github.com/ipfs/go-graphsync/ipldutil"
)

var logger = logging.Logger("gs-traversal")

// ResponseSender sends responses over the network
type ResponseSender func(
link ipld.Link,
Expand All @@ -22,15 +24,23 @@ func RunTraversal(
loader ipld.Loader,
traverser ipldutil.Traverser,
sendResponse ResponseSender) error {
nBlocksRead := 0

for {
isComplete, err := traverser.IsComplete()
if isComplete {
if err != nil {
logger.Infof("traversal completion check failed, nBlocksRead=%d, err=%s", nBlocksRead, err)
} else {
logger.Infof("traversal completed successfully, nBlocksRead=%d", nBlocksRead)
}
return err
}
lnk, lnkCtx := traverser.CurrentRequest()
result, err := loader(lnk, lnkCtx)
var data []byte
if err != nil {
logger.Errorf("failed to load link=%s, nBlocksRead=%d, err=%s", lnk, nBlocksRead, err)
traverser.Error(traversal.SkipMe{})
} else {
blockBuffer, ok := result.(*bytes.Buffer)
Expand All @@ -39,14 +49,17 @@ func RunTraversal(
_, err = io.Copy(blockBuffer, result)
}
if err != nil {
logger.Errorf("failed to write to buffer, link=%s, nBlocksRead=%d, err=%s", lnk, nBlocksRead, err)
traverser.Error(err)
} else {
data = blockBuffer.Bytes()
err = traverser.Advance(blockBuffer)
if err != nil {
logger.Errorf("failed to advcance traversal, link=%s, nBlocksRead=%d, err=%s", lnk, nBlocksRead, err)
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return err
}
}
nBlocksRead++
}
err = sendResponse(lnk, data)
if err != nil {
Expand Down