2 files changed, 30 insertions, 0 deletions

diff --git a/persistence/src/vespa/persistence/spi/id_and_timestamp.cpp b/persistence/src/vespa/persistence/spi/id_and_timestamp.cpp
index fba45990744..03eaf7c9e6e 100644
--- a/persistence/src/vespa/persistence/spi/id_and_timestamp.cpp
+++ b/persistence/src/vespa/persistence/spi/id_and_timestamp.cpp
@@ -1,5 +1,6 @@
 // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 #include "id_and_timestamp.h"
+#include <vespa/vespalib/stllike/asciistream.h>
 
 namespace storage::spi {
 
@@ -14,4 +15,23 @@ IdAndTimestamp& IdAndTimestamp::operator=(const IdAndTimestamp&) = default;
 IdAndTimestamp::IdAndTimestamp(IdAndTimestamp&&) noexcept = default;
 IdAndTimestamp& IdAndTimestamp::operator=(IdAndTimestamp&&) noexcept = default;
 
+void IdAndTimestamp::print(vespalib::asciistream& os) const {
+    os << id.toString() << " at time " << timestamp.getValue();
+}
+
+vespalib::string IdAndTimestamp::to_string() const {
+    vespalib::asciistream os;
+    print(os);
+    return os.str();
+}
+
+vespalib::asciistream& operator<<(vespalib::asciistream& os, const IdAndTimestamp& id_ts) {
+    id_ts.print(os);
+    return os;
+}
+std::ostream& operator<<(std::ostream& os, const IdAndTimestamp& id_ts) {
+    os << id_ts.to_string();
+    return os;
+}
+
 }
diff --git a/persistence/src/vespa/persistence/spi/id_and_timestamp.h b/persistence/src/vespa/persistence/spi/id_and_timestamp.h
index d8cdba3d063..a45cbfcf5eb 100644
--- a/persistence/src/vespa/persistence/spi/id_and_timestamp.h
+++ b/persistence/src/vespa/persistence/spi/id_and_timestamp.h
@@ -3,6 +3,10 @@
 
 #include "types.h"
 #include <vespa/document/base/documentid.h>
+#include <vespa/vespalib/stllike/string.h>
+#include <iosfwd>
+
+namespace vespalib { class asciistream; }
 
 namespace storage::spi {
 
@@ -27,6 +31,9 @@ struct IdAndTimestamp {
         return ((id == rhs.id) && (timestamp == rhs.timestamp));
     }
 
+    void print(vespalib::asciistream&) const;
+    vespalib::string to_string() const;
+
     struct hash {
         size_t operator()(const IdAndTimestamp& id_ts) const noexcept {
             const size_t h = document::GlobalId::hash()(id_ts.id.getGlobalId());
@@ -35,4 +42,7 @@ struct IdAndTimestamp {
     };
 };
 
+vespalib::asciistream& operator<<(vespalib::asciistream&, const IdAndTimestamp&);
+std::ostream& operator<<(std::ostream&, const IdAndTimestamp&);
+
 }