1 files changed, 81 insertions, 0 deletions
diff --git a/src/director/director-host.h b/src/director/director-host.h
new file mode 100644
index 0000000..3bf05d2
--- /dev/null
+++ b/src/director/director-host.h
@@ -0,0 +1,81 @@
+#ifndef DIRECTOR_HOST_H
+#define DIRECTOR_HOST_H
+
+#include "net.h"
+
+struct director;
+
+struct director_host {
+	struct director *dir;
+	int refcount;
+
+	struct ip_addr ip;
+	char *ip_str;
+	in_port_t port;
+
+	/* name contains "ip:port" */
+	char *name;
+	/* change commands each have originating host and originating sequence.
+	   we'll keep track of the highest sequence we've seen from the host.
+	   if we find a lower sequence, we've already handled the command and
+	   it can be ignored (or: it must be ignored to avoid potential command
+	   loops) */
+	unsigned int last_seq;
+	/* use these to avoid infinitely sending SYNCs for directors that
+	   aren't connected in the ring. */
+	unsigned int last_sync_seq, last_sync_seq_counter, last_sync_timestamp;
+	/* whenever we receive a SYNC with stale hosts_hash, set this. if it's
+	   already set and equals the current hosts_hash, re-send our hosts to
+	   everybody in case they somehow got out of sync. */
+	unsigned int desynced_hosts_hash;
+	/* Last time host was detected to be down */
+	time_t last_network_failure;
+	time_t last_protocol_failure;
+
+	/* When we finish getting a right connection, send a SYNC with these
+	   parameters (if delayed_sync_seq != 0) */
+	uint32_t delayed_sync_seq;
+	unsigned int delayed_sync_minor_version;
+	unsigned int delayed_sync_timestamp;
+	unsigned int delayed_sync_hosts_hash;
+
+	/* we are this director */
+	bool self:1;
+	bool removed:1;
+};
+
+struct director_host *
+director_host_add(struct director *dir, const struct ip_addr *ip,
+		  in_port_t port);
+void director_host_free(struct director_host **host);
+
+void director_host_ref(struct director_host *host);
+void director_host_unref(struct director_host *host);
+
+void director_host_restarted(struct director_host *host);
+
+struct director_host *
+director_host_get(struct director *dir, const struct ip_addr *ip,
+		  in_port_t port);
+struct director_host *
+director_host_lookup(struct director *dir, const struct ip_addr *ip,
+		     in_port_t port);
+struct director_host *
+director_host_lookup_ip(struct director *dir, const struct ip_addr *ip);
+
+/* Returns 0 if b1 equals b2.
+   -1 if b1 is closer to our left side than b2 or
+   -1 if b2 is closer to our right side than b1
+   1 vice versa */
+int director_host_cmp_to_self(const struct director_host *b1,
+			      const struct director_host *b2,
+			      const struct director_host *self);
+/* Compare directors by IP/port. */
+int director_host_cmp_p(struct director_host *const *host1,
+			struct director_host *const *host2);
+
+/* Parse hosts list (e.g. "host1:port host2 host3:port") and them as
+   directors */
+void director_host_add_from_string(struct director *dir, const char *hosts);
+
+#endif