Merge branch '8087-arv-cli-request-body-from-file' of https://github.com/wtsi-hgi...

[arvados.git] / services / datamanager / datamanager.go

diff --git a/services/datamanager/datamanager.go b/services/datamanager/datamanager.go
index c1a5cbed75b6cd5439b439a1d1c81b900bf5505e..8e128358422a560a42cbdaa03e20feb8067fa6ba 100644 (file)
--- a/services/datamanager/datamanager.go
+++ b/services/datamanager/datamanager.go
@@ -22,6 +22,7 @@ var (
        logEventTypePrefix  string
        logFrequencySeconds int
        minutesBetweenRuns  int
+       collectionBatchSize int
        dryRun              bool
 )
 
@@ -38,6 +39,10 @@ func init() {
                "minutes-between-runs",
                0,
                "How many minutes we wait between data manager runs. 0 means run once and exit.")
+       flag.IntVar(&collectionBatchSize,
+               "collection-batch-size",
+               1000,
+               "How many collections to request in each batch.")
        flag.BoolVar(&dryRun,
                "dry-run",
                false,
@@ -108,10 +113,9 @@ func singlerun(arv arvadosclient.ArvadosClient) error {
                dataFetcher = BuildDataFetcher(arv)
        }
 
-       dataFetcher(arvLogger, &readCollections, &keepServerInfo)
-
-       if readCollections.Err != nil {
-               return readCollections.Err
+       err = dataFetcher(arvLogger, &readCollections, &keepServerInfo)
+       if err != nil {
+               return err
        }
 
        err = summary.MaybeWriteData(arvLogger, readCollections, keepServerInfo)
@@ -182,30 +186,35 @@ func singlerun(arv arvadosclient.ArvadosClient) error {
 
 // BuildDataFetcher returns a data fetcher that fetches data from remote servers.
 func BuildDataFetcher(arv arvadosclient.ArvadosClient) summary.DataFetcher {
-       return func(arvLogger *logger.Logger,
+       return func(
+               arvLogger *logger.Logger,
                readCollections *collection.ReadCollections,
-               keepServerInfo *keep.ReadServers) {
-               collectionChannel := make(chan collection.ReadCollections)
-
+               keepServerInfo *keep.ReadServers,
+       ) error {
+               collDone := make(chan struct{})
+               var collErr error
                go func() {
-                       collectionChannel <- collection.GetCollectionsAndSummarize(
+                       *readCollections, collErr = collection.GetCollectionsAndSummarize(
                                collection.GetCollectionsParams{
                                        Client:    arv,
                                        Logger:    arvLogger,
-                                       BatchSize: 50})
+                                       BatchSize: collectionBatchSize})
+                       collDone <- struct{}{}
                }()
 
-               var err error
-               *keepServerInfo, err = keep.GetKeepServersAndSummarize(
+               var keepErr error
+               *keepServerInfo, keepErr = keep.GetKeepServersAndSummarize(
                        keep.GetKeepServersParams{
                                Client: arv,
                                Logger: arvLogger,
                                Limit:  1000})
 
-               if err != nil {
-                       return
-               }
+               <-collDone
 
-               *readCollections = <-collectionChannel
+               // Return a nil error only if both parts succeeded.
+               if collErr != nil {
+                       return collErr
+               }
+               return keepErr
        }
 }