1 files changed, 14 insertions, 11 deletions

diff --git a/backends/prometheus/remote_write/remote_write.cc b/backends/prometheus/remote_write/remote_write.cc
index 91d4305ba..9448595c1 100644
--- a/backends/prometheus/remote_write/remote_write.cc
+++ b/backends/prometheus/remote_write/remote_write.cc
@@ -6,20 +6,19 @@
 
 using namespace prometheus;
 
+static google::protobuf::Arena arena;
+static WriteRequest *write_request;
 
-google::protobuf::Arena arena;
-WriteRequest *write_request;
-
-void init_write_request() {
+void backends_init_write_request() {
     GOOGLE_PROTOBUF_VERIFY_VERSION;
     write_request = google::protobuf::Arena::CreateMessage<WriteRequest>(&arena);
 }
 
-void clear_write_request() {
+void backends_clear_write_request() {
     write_request->clear_timeseries();
 }
 
-void add_host_info(const char *name, const char *instance, const char *application, const char *version, const int64_t timestamp) {
+void backends_add_host_info(const char *name, const char *instance, const char *application, const char *version, const int64_t timestamp) {
     TimeSeries *timeseries;
     Sample *sample;
     Label *label;
@@ -52,7 +51,7 @@ void add_host_info(const char *name, const char *instance, const char *applicati
 }
 
 // adds tag to the last created timeseries
-void add_tag(char *tag, char *value) {
+void backends_add_tag(char *tag, char *value) {
     TimeSeries *timeseries;
     Label *label;
 
@@ -63,7 +62,7 @@ void add_tag(char *tag, char *value) {
     label->set_value(value);
 }
 
-void add_metric(const char *name, const char *chart, const char *family, const char *dimension, const char *instance, const double value, const int64_t timestamp) {
+void backends_add_metric(const char *name, const char *chart, const char *family, const char *dimension, const char *instance, const double value, const int64_t timestamp) {
     TimeSeries *timeseries;
     Sample *sample;
     Label *label;
@@ -97,13 +96,17 @@ void add_metric(const char *name, const char *chart, const char *family, const c
     sample->set_timestamp(timestamp);
 }
 
-size_t get_write_request_size(){
+size_t backends_get_write_request_size(){
+#if GOOGLE_PROTOBUF_VERSION < 3001000
     size_t size = (size_t)snappy::MaxCompressedLength(write_request->ByteSize());
+#else
+    size_t size = (size_t)snappy::MaxCompressedLength(write_request->ByteSizeLong());
+#endif
 
     return (size < INT_MAX)?size:0;
 }
 
-int pack_write_request(char *buffer, size_t *size) {
+int backends_pack_write_request(char *buffer, size_t *size) {
     std::string uncompressed_write_request;
     if(write_request->SerializeToString(&uncompressed_write_request) == false) return 1;
 
@@ -112,6 +115,6 @@ int pack_write_request(char *buffer, size_t *size) {
     return 0;
 }
 
-void protocol_buffers_shutdown() {
+void backends_protocol_buffers_shutdown() {
     google::protobuf::ShutdownProtobufLibrary();
 }