[trafficserver] branch 9.2.x updated: utilize proxy.config.hostdb.host_file.interval config variable (#9039)

[zw...@apache.org]

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zwoop pushed a commit to branch 9.2.x
in repository https://gitbox.apache.org/repos/asf/trafficserver.git


The following commit(s) were added to refs/heads/9.2.x by this push:
     new c3f1b51a0 utilize proxy.config.hostdb.host_file.interval config variable (#9039)
c3f1b51a0 is described below

commit c3f1b51a06c7477526a759deaa82c28be76ff37d
Author: Chris McFarlen <ch...@mcfarlen.us>
AuthorDate: Tue Aug 16 13:55:36 2022 -0500

    utilize proxy.config.hostdb.host_file.interval config variable (#9039)
    
    (cherry picked from commit 60a91e6b96e914ad3fb5c43c5917cdf0ee8e21d1)
---
 iocore/hostdb/HostDB.cc           | 11 +++++++++++
 iocore/hostdb/P_HostDBProcessor.h |  3 +++
 2 files changed, 14 insertions(+)

diff --git a/iocore/hostdb/HostDB.cc b/iocore/hostdb/HostDB.cc
index e39b8fcc5..0a4a0352c 100644
--- a/iocore/hostdb/HostDB.cc
+++ b/iocore/hostdb/HostDB.cc
@@ -422,6 +422,7 @@ HostDBProcessor::start(int, size_t)
   HostDBContinuation *b = hostDBContAllocator.alloc();
   SET_CONTINUATION_HANDLER(b, (HostDBContHandler)&HostDBContinuation::backgroundEvent);
   b->mutex = new_ProxyMutex();
+  b->updateHostFileConfig();
   eventProcessor.schedule_every(b, HRTIME_SECONDS(1), ET_DNS);
 
   return 0;
@@ -1636,6 +1637,15 @@ HostDBContinuation::do_dns()
   }
 }
 
+void
+HostDBContinuation::updateHostFileConfig()
+{
+  RecInt tmp_interval{};
+
+  REC_ReadConfigInteger(tmp_interval, "proxy.config.hostdb.host_file.interval");
+  hostdb_hostfile_check_interval = std::chrono::seconds(tmp_interval);
+}
+
 //
 // Background event
 // Just increment the current_interval.  Might do other stuff
@@ -1656,6 +1666,7 @@ HostDBContinuation::backgroundEvent(int /* event ATS_UNUSED */, Event * /* e ATS
     struct stat info;
     char path[sizeof(hostdb_hostfile_path)];
 
+    updateHostFileConfig();
     REC_ReadConfigString(path, "proxy.config.hostdb.host_file.path", sizeof(path));
     if (0 != strcasecmp(hostdb_hostfile_path, path)) {
       Debug("hostdb", "Update host file '%s' -> '%s'", (*hostdb_hostfile_path ? hostdb_hostfile_path : "*-none-*"),
diff --git a/iocore/hostdb/P_HostDBProcessor.h b/iocore/hostdb/P_HostDBProcessor.h
index 7a05013c7..76b3155f0 100644
--- a/iocore/hostdb/P_HostDBProcessor.h
+++ b/iocore/hostdb/P_HostDBProcessor.h
@@ -462,6 +462,9 @@ struct HostDBContinuation : public Continuation {
   int retryEvent(int event, Event *e);
   int setbyEvent(int event, Event *e);
 
+  // update the host file config variables
+  void updateHostFileConfig();
+
   /// Recompute the hash and update ancillary values.
   void refresh_hash();
   void do_dns();