Added unit annotation supports onto tsmon in go.

server/internal/logdog/archivist/archivist.go

Index: server/internal/logdog/archivist/archivist.go
diff --git a/server/internal/logdog/archivist/archivist.go b/server/internal/logdog/archivist/archivist.go
index b2bc5ecf75c516251421dbb009f5e08d181efa40..72694ad4ca36bf012840b697e3e25700fdc50ad8 100644
--- a/server/internal/logdog/archivist/archivist.go
+++ b/server/internal/logdog/archivist/archivist.go
@@ -26,6 +26,7 @@ import (
 	"github.com/luci/luci-go/common/tsmon/distribution"
 	"github.com/luci/luci-go/common/tsmon/field"
 	"github.com/luci/luci-go/common/tsmon/metric"
+	tsmon_types "github.com/luci/luci-go/common/tsmon/types"
 	"github.com/luci/luci-go/server/logdog/archive"
 	"github.com/luci/luci-go/server/logdog/storage"
 )
@@ -45,6 +46,7 @@ var (
 	// processed, regardless of success/failure.
 	tsCount = metric.NewCounter("logdog/archivist/archive/count",
 		"The number of archival tasks processed.",
+		tsmon_types.MetricMetadata{},
 		field.Bool("successful"))
 
 	// tsSize tracks the archive binary file size distribution of completed
@@ -56,6 +58,7 @@ var (
 	// The "stream" field is the type of log stream that is being archived.
 	tsSize = metric.NewCumulativeDistribution("logdog/archivist/archive/size",
 		"The size (in bytes) of each archive file.",
+		tsmon_types.MetricMetadata{Units: tsmon_types.Bytes},
 		distribution.DefaultBucketer,
 		field.String("archive"),
 		field.String("stream"))
@@ -69,6 +72,7 @@ var (
 	// The "stream" field is the type of log stream that is being archived.
 	tsTotalBytes = metric.NewCounter("logdog/archivist/archive/total_bytes",
 		"The total number of archived bytes.",
+		tsmon_types.MetricMetadata{Units: tsmon_types.Bytes},
 		field.String("archive"),
 		field.String("stream"))
 
@@ -78,6 +82,7 @@ var (
 	// The "stream" field is the type of log stream that is being archived.
 	tsLogEntries = metric.NewCumulativeDistribution("logdog/archivist/archive/log_entries",
 		"The total number of log entries per archive.",
+		tsmon_types.MetricMetadata{},
 		distribution.DefaultBucketer,
 		field.String("stream"))
 
@@ -87,6 +92,7 @@ var (
 	// The "stream" field is the type of log stream that is being archived.
 	tsTotalLogEntries = metric.NewCounter("logdog/archivist/archive/total_log_entries",
 		"The total number of log entries.",
+		tsmon_types.MetricMetadata{},
 		field.String("stream"))
 )