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diff --git a/src/pmmgr/pmmgr.h b/src/pmmgr/pmmgr.h
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+/* -*- C++ -*-
+ * Copyright (c) 2013-2014 Red Hat.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#ifndef PMMGR_H
+#define PMMGR_H
+
+extern "C" {
+#include "pmapi.h"
+}
+#include <string>
+#include <vector>
+#include <set>
+#include <map>
+#include <stdexcept>
+#include <iostream>
+
+
+typedef std::string pcp_context_spec; // pmNewContext PM_CONTEXT_HOST parameter
+typedef std::string pmmgr_hostid; // a unique id for a pmcd
+
+
+// Instances of pmmgr_configurable represent a configurable object,
+// which reads one or more lines of djb-style directories. 
+class pmmgr_configurable
+{
+protected:
+  pmmgr_configurable(const std::string& dir);
+  virtual ~pmmgr_configurable() {}
+
+  std::vector<std::string> get_config_multi(const std::string&) const;
+  std::string get_config_single(const std::string&) const;
+  bool get_config_exists(const std::string&) const;
+
+  // private: maybe?
+  std::string config_directory;
+
+  std::ostream& timestamp(std::ostream&);
+  int wrap_system(const std::string& cmd);
+};
+
+
+
+
+// Instances of pmmgr_daemon represent a possibly-live, restartable daemon.
+class pmmgr_daemon: public pmmgr_configurable 
+{
+public:
+  pmmgr_daemon(const std::string& config_directory, 
+               const pmmgr_hostid& hostid, const pcp_context_spec& spec);
+  virtual ~pmmgr_daemon();
+  void poll();
+
+protected:
+  pmmgr_hostid hostid;
+  pcp_context_spec spec;
+  int pid;
+  time_t last_restart_attempt;
+
+  virtual std::string daemon_command_line() = 0;
+};
+
+
+class pmmgr_pmlogger_daemon: public pmmgr_daemon
+{
+public:
+  pmmgr_pmlogger_daemon(const std::string& config_directory, 
+                        const pmmgr_hostid& hostid, const pcp_context_spec& spec);
+protected:
+  std::string daemon_command_line();
+};
+
+class pmmgr_pmie_daemon: public pmmgr_daemon
+{
+public:
+  pmmgr_pmie_daemon(const std::string& config_directory, 
+                    const pmmgr_hostid& hostid, const pcp_context_spec& spec);
+protected:
+  std::string daemon_command_line();
+};
+
+
+
+
+// An instance of a pmmgr_job_spec represents a pmmgr
+// configuration item to monitor some set of pcp target patterns
+// (which collectively map to a varying set of pmcd's), and a
+// corresponding set of daemons to keep running for each of them.
+//
+// The pmcds are identified by a configurable algorithm that collects
+// site-specific metrics into a single string, which is then sanitized
+// to make it typeable, portable, useful as a directory name.
+//
+// It is configured from a djb-style control directory with files containing
+// 100% pure content.  Multiple values within the files, where permitted,
+// are newline-separated.
+
+class pmmgr_job_spec: pmmgr_configurable
+{
+public:
+  pmmgr_job_spec(const std::string& config_directory);
+  ~pmmgr_job_spec(); // shut down all daemons
+  void poll(); // check targets, daemons
+
+private:
+  std::map<std::string,pmMetricSpec*> parsed_metric_cache;
+  pmMetricSpec* parse_metric_spec(const std::string&);
+
+  pmmgr_hostid compute_hostid (const pcp_context_spec&);
+  std::map<pmmgr_hostid,pcp_context_spec> known_targets;
+
+  void note_new_hostid(const pmmgr_hostid&, const pcp_context_spec&);
+  void note_dead_hostid(const pmmgr_hostid&);
+  std::multimap<pmmgr_hostid,pmmgr_daemon*> daemons;
+};
+
+
+
+
+
+
+#endif
+