[ovs-dev] [multi-dbs v2 3/3] ovsdb-server: Add support for multiple databases.

Ben Pfaff blp at nicira.com
Tue Sep 25 16:24:20 UTC 2012


Thanks.  I pushed these to master.

On Mon, Sep 24, 2012 at 01:35:13PM -0700, Ethan Jackson wrote:
> Acked-by: Ethan Jackson <ethan at nicira.com>
> 
> 
> On Fri, Sep 21, 2012 at 11:26 AM, Ben Pfaff <blp at nicira.com> wrote:
> > The OVSDB protocol has supported multiple databases for a long time, but
> > the ovsdb-server implementation only supported one database at a time.
> > This commit adds support for multiple databases.
> >
> > Feature #12353.
> > Signed-off-by: Ben Pfaff <blp at nicira.com>
> > ---
> >  ovsdb/jsonrpc-server.c  |  115 ++++++++++++--------
> >  ovsdb/jsonrpc-server.h  |    4 +-
> >  ovsdb/ovsdb-server.1.in |   32 +++---
> >  ovsdb/ovsdb-server.c    |  273 ++++++++++++++++++++++++++++++++---------------
> >  ovsdb/server.c          |   28 ++++--
> >  ovsdb/server.h          |   13 ++-
> >  ovsdb/trigger.c         |    9 +-
> >  ovsdb/trigger.h         |    8 +-
> >  tests/ovsdb-server.at   |   61 ++++++++---
> >  tests/test-ovsdb.c      |    8 +-
> >  utilities/ovs-ctl.8     |    6 +
> >  utilities/ovs-ctl.in    |   17 +++-
> >  12 files changed, 392 insertions(+), 182 deletions(-)
> >
> > diff --git a/ovsdb/jsonrpc-server.c b/ovsdb/jsonrpc-server.c
> > index bb887d0..279ea97 100644
> > --- a/ovsdb/jsonrpc-server.c
> > +++ b/ovsdb/jsonrpc-server.c
> > @@ -66,6 +66,7 @@ static void ovsdb_jsonrpc_session_unlock__(struct ovsdb_lock_waiter *);
> >
> >  /* Triggers. */
> >  static void ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *,
> > +                                         struct ovsdb *,
> >                                           struct json *id, struct json *params);
> >  static struct ovsdb_jsonrpc_trigger *ovsdb_jsonrpc_trigger_find(
> >      struct ovsdb_jsonrpc_session *, const struct json *id, size_t hash);
> > @@ -76,7 +77,7 @@ static void ovsdb_jsonrpc_trigger_complete_done(
> >
> >  /* Monitors. */
> >  static struct json *ovsdb_jsonrpc_monitor_create(
> > -    struct ovsdb_jsonrpc_session *, struct json *params);
> > +    struct ovsdb_jsonrpc_session *, struct ovsdb *, struct json *params);
> >  static struct jsonrpc_msg *ovsdb_jsonrpc_monitor_cancel(
> >      struct ovsdb_jsonrpc_session *,
> >      struct json_array *params,
> > @@ -106,16 +107,29 @@ static struct ovsdb_jsonrpc_remote *ovsdb_jsonrpc_server_add_remote(
> >  );
> >  static void ovsdb_jsonrpc_server_del_remote(struct shash_node *);
> >
> > +/* Creates and returns a new server to provide JSON-RPC access to an OVSDB.
> > + *
> > + * The caller must call ovsdb_jsonrpc_server_add_db() for each database to
> > + * which 'server' should provide access. */
> >  struct ovsdb_jsonrpc_server *
> > -ovsdb_jsonrpc_server_create(struct ovsdb *db)
> > +ovsdb_jsonrpc_server_create(void)
> >  {
> >      struct ovsdb_jsonrpc_server *server = xzalloc(sizeof *server);
> > -    ovsdb_server_init(&server->up, db);
> > +    ovsdb_server_init(&server->up);
> >      server->max_sessions = 64;
> >      shash_init(&server->remotes);
> >      return server;
> >  }
> >
> > +/* Adds 'db' to the set of databases served out by 'svr'.  Returns true if
> > + * successful, false if 'db''s name is the same as some database already in
> > + * 'server'. */
> > +bool
> > +ovsdb_jsonrpc_server_add_db(struct ovsdb_jsonrpc_server *svr, struct ovsdb *db)
> > +{
> > +    return ovsdb_server_add_db(&svr->up, db);
> > +}
> > +
> >  void
> >  ovsdb_jsonrpc_server_destroy(struct ovsdb_jsonrpc_server *svr)
> >  {
> > @@ -350,7 +364,7 @@ ovsdb_jsonrpc_session_create(struct ovsdb_jsonrpc_remote *remote,
> >      struct ovsdb_jsonrpc_session *s;
> >
> >      s = xzalloc(sizeof *s);
> > -    ovsdb_session_init(&s->up, remote->server->up.db);
> > +    ovsdb_session_init(&s->up, &remote->server->up);
> >      s->remote = remote;
> >      list_push_back(&remote->sessions, &s->node);
> >      hmap_init(&s->triggers);
> > @@ -558,21 +572,22 @@ ovsdb_jsonrpc_session_get_status(const struct ovsdb_jsonrpc_remote *remote,
> >      return true;
> >  }
> >
> > -static const char *
> > -get_db_name(const struct ovsdb_jsonrpc_session *s)
> > -{
> > -    return s->remote->server->up.db->schema->name;
> > -}
> > -
> > -static struct jsonrpc_msg *
> > -ovsdb_jsonrpc_check_db_name(const struct ovsdb_jsonrpc_session *s,
> > -                            const struct jsonrpc_msg *request)
> > +/* Examines 'request' to determine the database to which it relates, and then
> > + * searches 's' to find that database:
> > + *
> > + *    - If successful, returns the database and sets '*replyp' to NULL.
> > + *
> > + *    - If no such database exists, returns NULL and sets '*replyp' to an
> > + *      appropriate JSON-RPC error reply, owned by the caller. */
> > +static struct ovsdb *
> > +ovsdb_jsonrpc_lookup_db(const struct ovsdb_jsonrpc_session *s,
> > +                        const struct jsonrpc_msg *request,
> > +                        struct jsonrpc_msg **replyp)
> >  {
> >      struct json_array *params;
> > -    const char *want_db_name;
> > -    const char *have_db_name;
> >      struct ovsdb_error *error;
> > -    struct jsonrpc_msg *reply;
> > +    const char *db_name;
> > +    struct ovsdb *db;
> >
> >      params = json_array(request->params);
> >      if (!params->n || params->elems[0]->type != JSON_STRING) {
> > @@ -582,22 +597,23 @@ ovsdb_jsonrpc_check_db_name(const struct ovsdb_jsonrpc_session *s,
> >          goto error;
> >      }
> >
> > -    want_db_name = params->elems[0]->u.string;
> > -    have_db_name = get_db_name(s);
> > -    if (strcmp(want_db_name, have_db_name)) {
> > +    db_name = params->elems[0]->u.string;
> > +    db = shash_find_data(&s->up.server->dbs, db_name);
> > +    if (!db) {
> >          error = ovsdb_syntax_error(
> >              request->params, "unknown database",
> >              "%s request specifies unknown database %s",
> > -            request->method, want_db_name);
> > +            request->method, db_name);
> >          goto error;
> >      }
> >
> > -    return NULL;
> > +    *replyp = NULL;
> > +    return db;
> >
> >  error:
> > -    reply = jsonrpc_create_reply(ovsdb_error_to_json(error), request->id);
> > +    *replyp = jsonrpc_create_reply(ovsdb_error_to_json(error), request->id);
> >      ovsdb_error_destroy(error);
> > -    return reply;
> > +    return NULL;
> >  }
> >
> >  static struct ovsdb_error *
> > @@ -739,10 +755,10 @@ error:
> >  }
> >
> >  static struct jsonrpc_msg *
> > -execute_transaction(struct ovsdb_jsonrpc_session *s,
> > +execute_transaction(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
> >                      struct jsonrpc_msg *request)
> >  {
> > -    ovsdb_jsonrpc_trigger_create(s, request->id, request->params);
> > +    ovsdb_jsonrpc_trigger_create(s, db, request->id, request->params);
> >      request->id = NULL;
> >      request->params = NULL;
> >      jsonrpc_msg_destroy(request);
> > @@ -756,30 +772,39 @@ ovsdb_jsonrpc_session_got_request(struct ovsdb_jsonrpc_session *s,
> >      struct jsonrpc_msg *reply;
> >
> >      if (!strcmp(request->method, "transact")) {
> > -        reply = ovsdb_jsonrpc_check_db_name(s, request);
> > +        struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
> >          if (!reply) {
> > -            reply = execute_transaction(s, request);
> > +            reply = execute_transaction(s, db, request);
> >          }
> >      } else if (!strcmp(request->method, "monitor")) {
> > -        reply = ovsdb_jsonrpc_check_db_name(s, request);
> > +        struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
> >          if (!reply) {
> >              reply = jsonrpc_create_reply(
> > -                ovsdb_jsonrpc_monitor_create(s, request->params), request->id);
> > +                ovsdb_jsonrpc_monitor_create(s, db, request->params),
> > +                request->id);
> >          }
> >      } else if (!strcmp(request->method, "monitor_cancel")) {
> >          reply = ovsdb_jsonrpc_monitor_cancel(s, json_array(request->params),
> >                                               request->id);
> >      } else if (!strcmp(request->method, "get_schema")) {
> > -        reply = ovsdb_jsonrpc_check_db_name(s, request);
> > +        struct ovsdb *db = ovsdb_jsonrpc_lookup_db(s, request, &reply);
> >          if (!reply) {
> > -            reply = jsonrpc_create_reply(
> > -                ovsdb_schema_to_json(s->remote->server->up.db->schema),
> > -                request->id);
> > +            reply = jsonrpc_create_reply(ovsdb_schema_to_json(db->schema),
> > +                                         request->id);
> >          }
> >      } else if (!strcmp(request->method, "list_dbs")) {
> > -        reply = jsonrpc_create_reply(
> > -            json_array_create_1(json_string_create(get_db_name(s))),
> > -            request->id);
> > +        size_t n_dbs = shash_count(&s->up.server->dbs);
> > +        struct shash_node *node;
> > +        struct json **dbs;
> > +        size_t i;
> > +
> > +        dbs = xmalloc(n_dbs * sizeof *dbs);
> > +        i = 0;
> > +        SHASH_FOR_EACH (node, &s->up.server->dbs) {
> > +            dbs[i++] = json_string_create(node->name);
> > +        }
> > +        reply = jsonrpc_create_reply(json_array_create(dbs, n_dbs),
> > +                                     request->id);
> >      } else if (!strcmp(request->method, "lock")) {
> >          reply = ovsdb_jsonrpc_session_lock(s, request, OVSDB_LOCK_WAIT);
> >      } else if (!strcmp(request->method, "steal")) {
> > @@ -836,7 +861,7 @@ struct ovsdb_jsonrpc_trigger {
> >  };
> >
> >  static void
> > -ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *s,
> > +ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
> >                               struct json *id, struct json *params)
> >  {
> >      struct ovsdb_jsonrpc_trigger *t;
> > @@ -858,7 +883,7 @@ ovsdb_jsonrpc_trigger_create(struct ovsdb_jsonrpc_session *s,
> >
> >      /* Insert into trigger table. */
> >      t = xmalloc(sizeof *t);
> > -    ovsdb_trigger_init(&s->up, &t->trigger, params, time_msec());
> > +    ovsdb_trigger_init(&s->up, db, &t->trigger, params, time_msec());
> >      t->id = id;
> >      hmap_insert(&s->triggers, &t->hmap_node, hash);
> >
> > @@ -962,6 +987,7 @@ struct ovsdb_jsonrpc_monitor_table {
> >  struct ovsdb_jsonrpc_monitor {
> >      struct ovsdb_replica replica;
> >      struct ovsdb_jsonrpc_session *session;
> > +    struct ovsdb *db;
> >      struct hmap_node node;      /* In ovsdb_jsonrpc_session's "monitors". */
> >
> >      struct json *monitor_id;
> > @@ -1113,7 +1139,7 @@ ovsdb_jsonrpc_parse_monitor_request(struct ovsdb_jsonrpc_monitor_table *mt,
> >  }
> >
> >  static struct json *
> > -ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s,
> > +ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s, struct ovsdb *db,
> >                               struct json *params)
> >  {
> >      struct ovsdb_jsonrpc_monitor *m = NULL;
> > @@ -1141,8 +1167,9 @@ ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s,
> >
> >      m = xzalloc(sizeof *m);
> >      ovsdb_replica_init(&m->replica, &ovsdb_jsonrpc_replica_class);
> > -    ovsdb_add_replica(s->remote->server->up.db, &m->replica);
> > +    ovsdb_add_replica(db, &m->replica);
> >      m->session = s;
> > +    m->db = db;
> >      hmap_insert(&s->monitors, &m->node, json_hash(monitor_id, 0));
> >      m->monitor_id = json_clone(monitor_id);
> >      shash_init(&m->tables);
> > @@ -1154,7 +1181,7 @@ ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s,
> >          const struct json *mr_value;
> >          size_t i;
> >
> > -        table = ovsdb_get_table(s->remote->server->up.db, node->name);
> > +        table = ovsdb_get_table(m->db, node->name);
> >          if (!table) {
> >              error = ovsdb_syntax_error(NULL, NULL,
> >                                         "no table named %s", node->name);
> > @@ -1203,7 +1230,7 @@ ovsdb_jsonrpc_monitor_create(struct ovsdb_jsonrpc_session *s,
> >
> >  error:
> >      if (m) {
> > -        ovsdb_remove_replica(s->remote->server->up.db, &m->replica);
> > +        ovsdb_remove_replica(m->db, &m->replica);
> >      }
> >
> >      json = ovsdb_error_to_json(error);
> > @@ -1227,7 +1254,7 @@ ovsdb_jsonrpc_monitor_cancel(struct ovsdb_jsonrpc_session *s,
> >              return jsonrpc_create_error(json_string_create("unknown monitor"),
> >                                          request_id);
> >          } else {
> > -            ovsdb_remove_replica(s->remote->server->up.db, &m->replica);
> > +            ovsdb_remove_replica(m->db, &m->replica);
> >              return jsonrpc_create_reply(json_object_create(), request_id);
> >          }
> >      }
> > @@ -1239,7 +1266,7 @@ ovsdb_jsonrpc_monitor_remove_all(struct ovsdb_jsonrpc_session *s)
> >      struct ovsdb_jsonrpc_monitor *m, *next;
> >
> >      HMAP_FOR_EACH_SAFE (m, next, node, &s->monitors) {
> > -        ovsdb_remove_replica(s->remote->server->up.db, &m->replica);
> > +        ovsdb_remove_replica(m->db, &m->replica);
> >      }
> >  }
> >
> > diff --git a/ovsdb/jsonrpc-server.h b/ovsdb/jsonrpc-server.h
> > index 2dc0c78..bf2a2fc 100644
> > --- a/ovsdb/jsonrpc-server.h
> > +++ b/ovsdb/jsonrpc-server.h
> > @@ -22,7 +22,9 @@ struct ovsdb;
> >  struct shash;
> >  struct simap;
> >
> > -struct ovsdb_jsonrpc_server *ovsdb_jsonrpc_server_create(struct ovsdb *);
> > +struct ovsdb_jsonrpc_server *ovsdb_jsonrpc_server_create(void);
> > +bool ovsdb_jsonrpc_server_add_db(struct ovsdb_jsonrpc_server *,
> > +                                 struct ovsdb *);
> >  void ovsdb_jsonrpc_server_destroy(struct ovsdb_jsonrpc_server *);
> >
> >  /* Options for a remote. */
> > diff --git a/ovsdb/ovsdb-server.1.in b/ovsdb/ovsdb-server.1.in
> > index 1f5be03..b4b6eb6 100644
> > --- a/ovsdb/ovsdb-server.1.in
> > +++ b/ovsdb/ovsdb-server.1.in
> > @@ -10,7 +10,7 @@ ovsdb\-server \- Open vSwitch database server
> >  .
> >  .SH SYNOPSIS
> >  \fBovsdb\-server\fR
> > -[\fIdatabase\fR]
> > +[\fIdatabase\fR]\&...
> >  [\fB\-\-remote=\fIremote\fR]\&...
> >  [\fB\-\-run=\fIcommand\fR]
> >  .so lib/daemon-syn.man
> > @@ -21,13 +21,13 @@ ovsdb\-server \- Open vSwitch database server
> >  .so lib/common-syn.man
> >  .
> >  .SH DESCRIPTION
> > -The \fBovsdb\-server\fR program provides RPC interfaces to an Open
> > -vSwitch database (OVSDB).  It supports JSON-RPC client connections
> > -over active or passive TCP/IP or Unix domain sockets.
> > +The \fBovsdb\-server\fR program provides RPC interfaces to one or more
> > +Open vSwitch databases (OVSDBs).  It supports JSON-RPC client
> > +connections over active or passive TCP/IP or Unix domain sockets.
> >  .PP
> > -The OVSDB file may be specified on the command line as \fIdatabase\fR.
> > -The default is \fB at DBDIR@/conf.db\fR.  The database
> > -file must already have been created and initialized using, for
> > +Each OVSDB file may be specified on the command line as \fIdatabase\fR.
> > +If none is specified, the default is \fB at DBDIR@/conf.db\fR.  The database
> > +files must already have been created and initialized using, for
> >  example, \fBovsdb\-tool create\fR.
> >  .
> >  .SH OPTIONS
> > @@ -40,11 +40,12 @@ Adds \fIremote\fR as a connection method used by \fBovsdb\-server\fR.
> >  .so ovsdb/remote-passive.man
> >  .so ovsdb/remote-active.man
> >  .
> > -.IP "\fBdb:\fItable\fB,\fIcolumn\fR"
> > +.IP "\fBdb:\fR[\fIdb\fB,\fR]\fItable\fB,\fIcolumn\fR"
> >  Reads additional connection methods from \fIcolumn\fR in all of the
> > -rows in \fItable\fR.  As the contents of \fIcolumn\fR changes,
> > -\fBovsdb\-server\fR also adds and drops connection methods
> > -accordingly.
> > +rows in \fItable\fR within \fIdb\fR.  (If \fBovsdb\-server\fR is
> > +providing access to only one database, then \fIdb\fR is optional.)  As
> > +the contents of \fIcolumn\fR changes, \fBovsdb\-server\fR also adds
> > +and drops connection methods accordingly.
> >  .IP
> >  If \fIcolumn\fR's type is string or set of strings, then the
> >  connection methods are taken directly from the column.  The connection
> > @@ -61,7 +62,7 @@ is mandatory: if it is missing or empty then no connection method can
> >  be configured.
> >  .IP "\fBmax_backoff\fR (integer)"
> >  Maximum number of milliseconds to wait between connection attempts.
> > -.IP "\fBinactivity_probe\fR (integer)
> > +.IP "\fBinactivity_probe\fR (integer)"
> >  Maximum number of milliseconds of idle time on connection to
> >  client before sending an inactivity probe message.
> >  .RE
> > @@ -111,9 +112,10 @@ described below.
> >  These commands are specific to \fBovsdb\-server\fR.
> >  .IP "\fBexit\fR"
> >  Causes \fBovsdb\-server\fR to gracefully terminate.
> > -.IP "\fBovsdb\-server/compact\fR"
> > -Compacts the database in-place.  The database is also automatically
> > -compacted occasionally.
> > +.IP "\fBovsdb\-server/compact\fR [\fIdb\fR]\&..."
> > +Compacts each database \fIdb\fR in-place.  If no \fIdb\fR is
> > +specified, compacts every database in-place.  Databases are also
> > +automatically compacted occasionally.
> >  .
> >  .IP "\fBovsdb\-server/reconnect\fR"
> >  Makes \fBovsdb\-server\fR drop all of the JSON\-RPC
> > diff --git a/ovsdb/ovsdb-server.c b/ovsdb/ovsdb-server.c
> > index 0baf9fc..69548c2 100644
> > --- a/ovsdb/ovsdb-server.c
> > +++ b/ovsdb/ovsdb-server.c
> > @@ -26,6 +26,7 @@
> >  #include "daemon.h"
> >  #include "dirs.h"
> >  #include "dummy.h"
> > +#include "dynamic-string.h"
> >  #include "file.h"
> >  #include "hash.h"
> >  #include "json.h"
> > @@ -56,6 +57,16 @@
> >
> >  VLOG_DEFINE_THIS_MODULE(ovsdb_server);
> >
> > +struct db {
> > +    /* Initialized in main(). */
> > +    char *filename;
> > +    struct ovsdb_file *file;
> > +    struct ovsdb *db;
> > +
> > +    /* Only used by update_remote_status(). */
> > +    struct ovsdb_txn *txn;
> > +};
> > +
> >  /* SSL configuration. */
> >  static char *private_key_file;
> >  static char *certificate_file;
> > @@ -66,17 +77,18 @@ static unixctl_cb_func ovsdb_server_exit;
> >  static unixctl_cb_func ovsdb_server_compact;
> >  static unixctl_cb_func ovsdb_server_reconnect;
> >
> > -static void parse_options(int argc, char *argv[], char **file_namep,
> > +static void parse_options(int *argc, char **argvp[],
> >                            struct sset *remotes, char **unixctl_pathp,
> >                            char **run_command);
> >  static void usage(void) NO_RETURN;
> >
> >  static void reconfigure_from_db(struct ovsdb_jsonrpc_server *jsonrpc,
> > -                                const struct ovsdb *db, struct sset *remotes);
> > +                                const struct db dbs[], size_t n_dbs,
> > +                                struct sset *remotes);
> >
> >  static void update_remote_status(const struct ovsdb_jsonrpc_server *jsonrpc,
> >                                   const struct sset *remotes,
> > -                                 struct ovsdb *db);
> > +                                 struct db dbs[], size_t n_dbs);
> >
> >  int
> >  main(int argc, char *argv[])
> > @@ -86,34 +98,53 @@ main(int argc, char *argv[])
> >      struct unixctl_server *unixctl;
> >      struct ovsdb_jsonrpc_server *jsonrpc;
> >      struct sset remotes;
> > -    struct ovsdb_error *error;
> > -    struct ovsdb_file *file;
> > -    struct ovsdb *db;
> >      struct process *run_process;
> > -    char *file_name;
> >      bool exiting;
> >      int retval;
> >      long long int status_timer = LLONG_MIN;
> >
> > +    struct db *dbs;
> > +    int n_dbs;
> > +    int i;
> > +
> >      proctitle_init(argc, argv);
> >      set_program_name(argv[0]);
> >      stress_init_command();
> >      signal(SIGPIPE, SIG_IGN);
> >      process_init();
> >
> > -    parse_options(argc, argv, &file_name, &remotes, &unixctl_path,
> > -                  &run_command);
> > +    parse_options(&argc, &argv, &remotes, &unixctl_path, &run_command);
> >
> >      daemonize_start();
> >
> > -    error = ovsdb_file_open(file_name, false, &db, &file);
> > -    if (error) {
> > -        ovs_fatal(0, "%s", ovsdb_error_to_string(error));
> > +    n_dbs = MAX(1, argc);
> > +    dbs = xcalloc(n_dbs + 1, sizeof *dbs);
> > +    if (argc > 0) {
> > +        for (i = 0; i < argc; i++) {
> > +            dbs[i].filename = argv[i];
> > +        }
> > +    } else {
> > +        dbs[0].filename = xasprintf("%s/conf.db", ovs_dbdir());
> >      }
> > -    free(file_name);
> >
> > -    jsonrpc = ovsdb_jsonrpc_server_create(db);
> > -    reconfigure_from_db(jsonrpc, db, &remotes);
> > +    for (i = 0; i < n_dbs; i++) {
> > +        struct ovsdb_error *error;
> > +
> > +        error = ovsdb_file_open(dbs[i].filename, false,
> > +                                &dbs[i].db, &dbs[i].file);
> > +        if (error) {
> > +            ovs_fatal(0, "%s", ovsdb_error_to_string(error));
> > +        }
> > +    }
> > +
> > +    jsonrpc = ovsdb_jsonrpc_server_create();
> > +    for (i = 0; i < n_dbs; i++) {
> > +        if (!ovsdb_jsonrpc_server_add_db(jsonrpc, dbs[i].db)) {
> > +            ovs_fatal(0, "%s: duplicate database name",
> > +                      dbs[i].db->schema->name);
> > +        }
> > +    }
> > +    reconfigure_from_db(jsonrpc, dbs, n_dbs, &remotes);
> >
> >      retval = unixctl_server_create(unixctl_path, &unixctl);
> >      if (retval) {
> > @@ -146,28 +177,35 @@ main(int argc, char *argv[])
> >      }
> >
> >      unixctl_command_register("exit", "", 0, 0, ovsdb_server_exit, &exiting);
> > -    unixctl_command_register("ovsdb-server/compact", "", 0, 0,
> > -                             ovsdb_server_compact, file);
> > +    unixctl_command_register("ovsdb-server/compact", "", 0, 1,
> > +                             ovsdb_server_compact, dbs);
> >      unixctl_command_register("ovsdb-server/reconnect", "", 0, 0,
> >                               ovsdb_server_reconnect, jsonrpc);
> >
> >      exiting = false;
> >      while (!exiting) {
> > +        int i;
> > +
> >          memory_run();
> >          if (memory_should_report()) {
> >              struct simap usage;
> >
> >              simap_init(&usage);
> >              ovsdb_jsonrpc_server_get_memory_usage(jsonrpc, &usage);
> > -            ovsdb_get_memory_usage(db, &usage);
> > +            for (i = 0; i < n_dbs; i++) {
> > +                ovsdb_get_memory_usage(dbs[i].db, &usage);
> > +            }
> >              memory_report(&usage);
> >              simap_destroy(&usage);
> >          }
> >
> > -        reconfigure_from_db(jsonrpc, db, &remotes);
> > +        reconfigure_from_db(jsonrpc, dbs, n_dbs, &remotes);
> >          ovsdb_jsonrpc_server_run(jsonrpc);
> >          unixctl_server_run(unixctl);
> > -        ovsdb_trigger_run(db, time_msec());
> > +
> > +        for (i = 0; i < n_dbs; i++) {
> > +            ovsdb_trigger_run(dbs[i].db, time_msec());
> > +        }
> >          if (run_process && process_exited(run_process)) {
> >              exiting = true;
> >          }
> > @@ -175,13 +213,15 @@ main(int argc, char *argv[])
> >          /* update Manager status(es) every 5 seconds */
> >          if (time_msec() >= status_timer) {
> >              status_timer = time_msec() + 5000;
> > -            update_remote_status(jsonrpc, &remotes, db);
> > +            update_remote_status(jsonrpc, &remotes, dbs, n_dbs);
> >          }
> >
> >          memory_wait();
> >          ovsdb_jsonrpc_server_wait(jsonrpc);
> >          unixctl_server_wait(unixctl);
> > -        ovsdb_trigger_wait(db, time_msec());
> > +        for (i = 0; i < n_dbs; i++) {
> > +            ovsdb_trigger_wait(dbs[i].db, time_msec());
> > +        }
> >          if (run_process) {
> >              process_wait(run_process);
> >          }
> > @@ -192,7 +232,9 @@ main(int argc, char *argv[])
> >          poll_block();
> >      }
> >      ovsdb_jsonrpc_server_destroy(jsonrpc);
> > -    ovsdb_destroy(db);
> > +    for (i = 0; i < n_dbs; i++) {
> > +        ovsdb_destroy(dbs[i].db);
> > +    }
> >      sset_destroy(&remotes);
> >      unixctl_server_destroy(unixctl);
> >
> > @@ -207,26 +249,64 @@ main(int argc, char *argv[])
> >      return 0;
> >  }
> >
> > +static const struct db *
> > +find_db(const struct db dbs[], size_t n_dbs, const char *db_name)
> > +{
> > +    size_t i;
> > +
> > +    for (i = 0; i < n_dbs; i++) {
> > +        if (!strcmp(dbs[i].db->schema->name, db_name)) {
> > +            return &dbs[i];
> > +        }
> > +    }
> > +
> > +    return NULL;
> > +}
> > +
> >  static void
> > -parse_db_column(const struct ovsdb *db,
> > +parse_db_column(const struct db dbs[], size_t n_dbs,
> >                  const char *name_,
> > +                const struct db **dbp,
> >                  const struct ovsdb_table **tablep,
> >                  const struct ovsdb_column **columnp)
> >  {
> > -    char *name, *table_name, *column_name;
> > +    const char *table_name, *column_name;
> >      const struct ovsdb_column *column;
> >      const struct ovsdb_table *table;
> > +    const char *tokens[3];
> >      char *save_ptr = NULL;
> > +    const struct db *db;
> > +    char *name;
> >
> >      name = xstrdup(name_);
> >      strtok_r(name, ":", &save_ptr); /* "db:" */
> > -    table_name = strtok_r(NULL, ",", &save_ptr);
> > -    column_name = strtok_r(NULL, ",", &save_ptr);
> > -    if (!table_name || !column_name) {
> > +    tokens[0] = strtok_r(NULL, ",", &save_ptr);
> > +    tokens[1] = strtok_r(NULL, ",", &save_ptr);
> > +    tokens[2] = strtok_r(NULL, ",", &save_ptr);
> > +    if (!tokens[0] || !tokens[1]) {
> >          ovs_fatal(0, "\"%s\": invalid syntax", name_);
> >      }
> > +    if (tokens[2]) {
> > +        const char *db_name = tokens[0];
> > +        table_name = tokens[1];
> > +        column_name = tokens[2];
> > +
> > +        db = find_db(dbs, n_dbs, tokens[0]);
> > +        if (!db) {
> > +            ovs_fatal(0, "\"%s\": no database named %s", name_, db_name);
> > +        }
> > +    } else {
> > +        if (n_dbs > 1) {
> > +            ovs_fatal(0, "\"%s\": database name must be specified (because "
> > +                      "multiple databases are configured)", name_);
> > +        }
> > +
> > +        table_name = tokens[0];
> > +        column_name = tokens[1];
> > +        db = &dbs[0];
> > +    }
> >
> > -    table = ovsdb_get_table(db, table_name);
> > +    table = ovsdb_get_table(db->db, table_name);
> >      if (!table) {
> >          ovs_fatal(0, "\"%s\": no table named %s", name_, table_name);
> >      }
> > @@ -238,20 +318,23 @@ parse_db_column(const struct ovsdb *db,
> >      }
> >      free(name);
> >
> > +    *dbp = db;
> >      *columnp = column;
> >      *tablep = table;
> >  }
> >
> >  static void
> > -parse_db_string_column(const struct ovsdb *db,
> > +parse_db_string_column(const struct db dbs[], size_t n_dbs,
> >                         const char *name,
> > +                       const struct db **dbp,
> >                         const struct ovsdb_table **tablep,
> >                         const struct ovsdb_column **columnp)
> >  {
> >      const struct ovsdb_column *column;
> >      const struct ovsdb_table *table;
> > +    const struct db *db;
> >
> > -    parse_db_column(db, name, &table, &column);
> > +    parse_db_column(dbs, n_dbs, name, &db, &table, &column);
> >
> >      if (column->type.key.type != OVSDB_TYPE_STRING
> >          || column->type.value.type != OVSDB_TYPE_VOID) {
> > @@ -260,12 +343,13 @@ parse_db_string_column(const struct ovsdb *db,
> >                    name, table->schema->name, column->name);
> >      }
> >
> > +    *dbp = db;
> >      *columnp = column;
> >      *tablep = table;
> >  }
> >
> >  static OVS_UNUSED const char *
> > -query_db_string(const struct ovsdb *db, const char *name)
> > +query_db_string(const struct db dbs[], size_t n_dbs, const char *name)
> >  {
> >      if (!name || strncmp(name, "db:", 3)) {
> >          return name;
> > @@ -273,8 +357,9 @@ query_db_string(const struct ovsdb *db, const char *name)
> >          const struct ovsdb_column *column;
> >          const struct ovsdb_table *table;
> >          const struct ovsdb_row *row;
> > +        const struct db *db;
> >
> > -        parse_db_string_column(db, name, &table, &column);
> > +        parse_db_string_column(dbs, n_dbs, name, &db, &table, &column);
> >
> >          HMAP_FOR_EACH (row, hmap_node, &table->rows) {
> >              const struct ovsdb_datum *datum;
> > @@ -493,14 +578,15 @@ add_manager_options(struct shash *remotes, const struct ovsdb_row *row)
> >  }
> >
> >  static void
> > -query_db_remotes(const char *name, const struct ovsdb *db,
> > +query_db_remotes(const char *name, const struct db dbs[], size_t n_dbs,
> >                   struct shash *remotes)
> >  {
> >      const struct ovsdb_column *column;
> >      const struct ovsdb_table *table;
> >      const struct ovsdb_row *row;
> > +    const struct db *db;
> >
> > -    parse_db_column(db, name, &table, &column);
> > +    parse_db_column(dbs, n_dbs, name, &db, &table, &column);
> >
> >      if (column->type.key.type == OVSDB_TYPE_STRING
> >          && column->type.value.type == OVSDB_TYPE_VOID) {
> > @@ -594,19 +680,20 @@ update_remote_row(const struct ovsdb_row *row, struct ovsdb_txn *txn,
> >  }
> >
> >  static void
> > -update_remote_rows(const struct ovsdb *db, struct ovsdb_txn *txn,
> > +update_remote_rows(const struct db dbs[], size_t n_dbs,
> >                     const char *remote_name,
> >                     const struct ovsdb_jsonrpc_server *jsonrpc)
> >  {
> >      const struct ovsdb_table *table, *ref_table;
> >      const struct ovsdb_column *column;
> >      const struct ovsdb_row *row;
> > +    const struct db *db;
> >
> >      if (strncmp("db:", remote_name, 3)) {
> >          return;
> >      }
> >
> > -    parse_db_column(db, remote_name, &table, &column);
> > +    parse_db_column(dbs, n_dbs, remote_name, &db, &table, &column);
> >
> >      if (column->type.key.type != OVSDB_TYPE_UUID
> >          || !column->type.key.u.uuid.refTable
> > @@ -626,7 +713,7 @@ update_remote_rows(const struct ovsdb *db, struct ovsdb_txn *txn,
> >
> >              ref_row = ovsdb_table_get_row(ref_table, &datum->keys[i].uuid);
> >              if (ref_row) {
> > -                update_remote_row(ref_row, txn, jsonrpc);
> > +                update_remote_row(ref_row, db->txn, jsonrpc);
> >              }
> >          }
> >      }
> > @@ -634,32 +721,36 @@ update_remote_rows(const struct ovsdb *db, struct ovsdb_txn *txn,
> >
> >  static void
> >  update_remote_status(const struct ovsdb_jsonrpc_server *jsonrpc,
> > -                     const struct sset *remotes, struct ovsdb *db)
> > +                     const struct sset *remotes,
> > +                     struct db dbs[], size_t n_dbs)
> >  {
> >      static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
> > -    struct ovsdb_txn *txn;
> > -    const bool durable_txn = false;
> > -    struct ovsdb_error *error;
> >      const char *remote;
> > +    size_t i;
> >
> > -    txn = ovsdb_txn_create(db);
> > +    for (i = 0; i < n_dbs; i++) {
> > +        dbs[i].txn = ovsdb_txn_create(dbs[i].db);
> > +    }
> >
> >      /* Iterate over --remote arguments given on command line. */
> >      SSET_FOR_EACH (remote, remotes) {
> > -        update_remote_rows(db, txn, remote, jsonrpc);
> > +        update_remote_rows(dbs, n_dbs, remote, jsonrpc);
> >      }
> >
> > -    error = ovsdb_txn_commit(txn, durable_txn);
> > -    if (error) {
> > -        VLOG_ERR_RL(&rl, "Failed to update remote status: %s",
> > -                    ovsdb_error_to_string(error));
> > +    for (i = 0; i < n_dbs; i++) {
> > +        struct ovsdb_error *error = ovsdb_txn_commit(dbs[i].txn, false);
> > +        if (error) {
> > +            VLOG_ERR_RL(&rl, "Failed to update remote status: %s",
> > +                        ovsdb_error_to_string(error));
> > +            ovsdb_error_destroy(error);
> > +        }
> >      }
> >  }
> >
> >  /* Reconfigures ovsdb-server based on information in the database. */
> >  static void
> >  reconfigure_from_db(struct ovsdb_jsonrpc_server *jsonrpc,
> > -                    const struct ovsdb *db, struct sset *remotes)
> > +                    const struct db dbs[], size_t n_dbs, struct sset *remotes)
> >  {
> >      struct shash resolved_remotes;
> >      const char *name;
> > @@ -668,7 +759,7 @@ reconfigure_from_db(struct ovsdb_jsonrpc_server *jsonrpc,
> >      shash_init(&resolved_remotes);
> >      SSET_FOR_EACH (name, remotes) {
> >          if (!strncmp(name, "db:", 3)) {
> > -            query_db_remotes(name, db, &resolved_remotes);
> > +            query_db_remotes(name, dbs, n_dbs, &resolved_remotes);
> >          } else {
> >              add_remote(&resolved_remotes, name);
> >          }
> > @@ -677,9 +768,9 @@ reconfigure_from_db(struct ovsdb_jsonrpc_server *jsonrpc,
> >      shash_destroy_free_data(&resolved_remotes);
> >
> >      /* Configure SSL. */
> > -    stream_ssl_set_key_and_cert(query_db_string(db, private_key_file),
> > -                                query_db_string(db, certificate_file));
> > -    stream_ssl_set_ca_cert_file(query_db_string(db, ca_cert_file),
> > +    stream_ssl_set_key_and_cert(query_db_string(dbs, n_dbs, private_key_file),
> > +                                query_db_string(dbs, n_dbs, certificate_file));
> > +    stream_ssl_set_ca_cert_file(query_db_string(dbs, n_dbs, ca_cert_file),
> >                                  bootstrap_ca_cert);
> >  }
> >
> > @@ -694,22 +785,42 @@ ovsdb_server_exit(struct unixctl_conn *conn, int argc OVS_UNUSED,
> >  }
> >
> >  static void
> > -ovsdb_server_compact(struct unixctl_conn *conn, int argc OVS_UNUSED,
> > -                     const char *argv[] OVS_UNUSED, void *file_)
> > +ovsdb_server_compact(struct unixctl_conn *conn, int argc,
> > +                     const char *argv[], void *dbs_)
> >  {
> > -    struct ovsdb_file *file = file_;
> > -    struct ovsdb_error *error;
> > +    struct db *dbs = dbs_;
> > +    struct ds reply;
> > +    struct db *db;
> > +    int n = 0;
> >
> > -    VLOG_INFO("compacting database by user request");
> > -    error = ovsdb_file_compact(file);
> > -    if (!error) {
> > -        unixctl_command_reply(conn, NULL);
> > +    ds_init(&reply);
> > +    for (db = dbs; db->filename != NULL; db++) {
> > +        const char *name = db->db->schema->name;
> > +
> > +        if (argc < 2 || !strcmp(argv[1], name)) {
> > +            struct ovsdb_error *error;
> > +
> > +            VLOG_INFO("compacting %s database by user request", name);
> > +
> > +            error = ovsdb_file_compact(db->file);
> > +            if (error) {
> > +                char *s = ovsdb_error_to_string(error);
> > +                ds_put_format(&reply, "%s\n", s);
> > +                free(s);
> > +            }
> > +
> > +            n++;
> > +        }
> > +    }
> > +
> > +    if (!n) {
> > +        unixctl_command_reply_error(conn, "no database by that name");
> > +    } else if (reply.length) {
> > +        unixctl_command_reply_error(conn, ds_cstr(&reply));
> >      } else {
> > -        char *s = ovsdb_error_to_string(error);
> > -        ovsdb_error_destroy(error);
> > -        unixctl_command_reply_error(conn, s);
> > -        free(s);
> > +        unixctl_command_reply(conn, NULL);
> >      }
> > +    ds_destroy(&reply);
> >  }
> >
> >  /* "ovsdb-server/reconnect": makes ovsdb-server drop all of its JSON-RPC
> > @@ -725,9 +836,8 @@ ovsdb_server_reconnect(struct unixctl_conn *conn, int argc OVS_UNUSED,
> >  }
> >
> >  static void
> > -parse_options(int argc, char *argv[], char **file_namep,
> > -              struct sset *remotes, char **unixctl_pathp,
> > -              char **run_command)
> > +parse_options(int *argcp, char **argvp[],
> > +              struct sset *remotes, char **unixctl_pathp, char **run_command)
> >  {
> >      enum {
> >          OPT_REMOTE = UCHAR_MAX + 1,
> > @@ -756,6 +866,8 @@ parse_options(int argc, char *argv[], char **file_namep,
> >          {NULL, 0, NULL, 0},
> >      };
> >      char *short_options = long_options_to_short_options(long_options);
> > +    int argc = *argcp;
> > +    char **argv = *argvp;
> >
> >      sset_init(remotes);
> >      for (;;) {
> > @@ -821,31 +933,18 @@ parse_options(int argc, char *argv[], char **file_namep,
> >      }
> >      free(short_options);
> >
> > -    argc -= optind;
> > -    argv += optind;
> > -
> > -    switch (argc) {
> > -    case 0:
> > -        *file_namep = xasprintf("%s/conf.db", ovs_dbdir());
> > -        break;
> > -
> > -    case 1:
> > -        *file_namep = xstrdup(argv[0]);
> > -        break;
> > -
> > -    default:
> > -        ovs_fatal(0, "database file is only non-option argument; "
> > -                "use --help for usage");
> > -    }
> > +    *argcp -= optind;
> > +    *argvp += optind;
> >  }
> >
> >  static void
> >  usage(void)
> >  {
> >      printf("%s: Open vSwitch database server\n"
> > -           "usage: %s [OPTIONS] DATABASE\n"
> > -           "where DATABASE is a database file in ovsdb format.\n",
> > -           program_name, program_name);
> > +           "usage: %s [OPTIONS] [DATABASE...]\n"
> > +           "where each DATABASE is a database file in ovsdb format.\n"
> > +           "The default DATABASE, if none is given, is\n%s/conf.db.\n",
> > +           program_name, program_name, ovs_dbdir());
> >      printf("\nJSON-RPC options (may be specified any number of times):\n"
> >             "  --remote=REMOTE         connect or listen to REMOTE\n");
> >      stream_usage("JSON-RPC", true, true, true);
> > diff --git a/ovsdb/server.c b/ovsdb/server.c
> > index 7cd4263..ac2aa29 100644
> > --- a/ovsdb/server.c
> > +++ b/ovsdb/server.c
> > @@ -1,4 +1,4 @@
> > -/* Copyright (c) 2011 Nicira, Inc.
> > +/* Copyright (c) 2011, 2012 Nicira, Inc.
> >   *
> >   * Licensed under the Apache License, Version 2.0 (the "License");
> >   * you may not use this file except in compliance with the License.
> > @@ -20,12 +20,13 @@
> >  #include <assert.h>
> >
> >  #include "hash.h"
> > +#include "ovsdb.h"
> >
> > -/* Initializes 'session' as a session that operates on 'db'. */
> > +/* Initializes 'session' as a session within 'server'. */
> >  void
> > -ovsdb_session_init(struct ovsdb_session *session, struct ovsdb *db)
> > +ovsdb_session_init(struct ovsdb_session *session, struct ovsdb_server *server)
> >  {
> > -    session->db = db;
> > +    session->server = server;
> >      list_init(&session->completions);
> >      hmap_init(&session->waiters);
> >  }
> > @@ -113,18 +114,31 @@ ovsdb_lock_waiter_is_owner(const struct ovsdb_lock_waiter *waiter)
> >      return waiter->lock && waiter == ovsdb_lock_get_owner(waiter->lock);
> >  }
> >
> > -/* Initializes 'server' as a server that operates on 'db'. */
> > +/* Initializes 'server'.
> > + *
> > + * The caller must call ovsdb_server_add_db() for each database to which
> > + * 'server' should provide access. */
> >  void
> > -ovsdb_server_init(struct ovsdb_server *server, struct ovsdb *db)
> > +ovsdb_server_init(struct ovsdb_server *server)
> >  {
> > -    server->db = db;
> > +    shash_init(&server->dbs);
> >      hmap_init(&server->locks);
> >  }
> >
> > +/* Adds 'db' to the set of databases served out by 'server'.  Returns true if
> > + * successful, false if 'db''s name is the same as some database already in
> > + * 'server'. */
> > +bool
> > +ovsdb_server_add_db(struct ovsdb_server *server, struct ovsdb *db)
> > +{
> > +    return shash_add_once(&server->dbs, db->schema->name, db);
> > +}
> > +
> >  /* Destroys 'server'. */
> >  void
> >  ovsdb_server_destroy(struct ovsdb_server *server)
> >  {
> > +    shash_destroy(&server->dbs);
> >      hmap_destroy(&server->locks);
> >  }
> >
> > diff --git a/ovsdb/server.h b/ovsdb/server.h
> > index e073850..561f01e 100644
> > --- a/ovsdb/server.h
> > +++ b/ovsdb/server.h
> > @@ -18,17 +18,21 @@
> >
> >  #include "hmap.h"
> >  #include "list.h"
> > +#include "shash.h"
> > +
> > +struct ovsdb;
> > +struct ovsdb_server;
> >
> >  /* Abstract representation of an OVSDB client connection, not tied to any
> >   * particular network protocol.  Protocol implementations
> >   * (e.g. jsonrpc-server.c) embed this in a larger data structure.  */
> >  struct ovsdb_session {
> > -    struct ovsdb *db;
> > +    struct ovsdb_server *server;
> >      struct list completions;    /* Completed triggers. */
> >      struct hmap waiters;        /* "ovsdb_lock_waiter *"s by lock name. */
> >  };
> >
> > -void ovsdb_session_init(struct ovsdb_session *, struct ovsdb *);
> > +void ovsdb_session_init(struct ovsdb_session *, struct ovsdb_server *);
> >  void ovsdb_session_destroy(struct ovsdb_session *);
> >
> >  struct ovsdb_lock_waiter *ovsdb_session_get_lock_waiter(
> > @@ -73,11 +77,12 @@ bool ovsdb_lock_waiter_is_owner(const struct ovsdb_lock_waiter *);
> >   * network protocol.  Protocol implementations (e.g. jsonrpc-server.c) embed
> >   * this in a larger data structure.  */
> >  struct ovsdb_server {
> > -    struct ovsdb *db;
> > +    struct shash dbs;      /* Maps from a db name to a "struct ovsdb *". */
> >      struct hmap locks;     /* Contains "struct ovsdb_lock"s indexed by name. */
> >  };
> >
> > -void ovsdb_server_init(struct ovsdb_server *, struct ovsdb *);
> > +void ovsdb_server_init(struct ovsdb_server *);
> > +bool ovsdb_server_add_db(struct ovsdb_server *, struct ovsdb *);
> >  void ovsdb_server_destroy(struct ovsdb_server *);
> >
> >  struct ovsdb_lock_waiter *ovsdb_server_lock(struct ovsdb_server *,
> > diff --git a/ovsdb/trigger.c b/ovsdb/trigger.c
> > index 6ae1f51..a93b844 100644
> > --- a/ovsdb/trigger.c
> > +++ b/ovsdb/trigger.c
> > @@ -1,4 +1,4 @@
> > -/* Copyright (c) 2009, 2010, 2011 Nicira, Inc.
> > +/* Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
> >   *
> >   * Licensed under the Apache License, Version 2.0 (the "License");
> >   * you may not use this file except in compliance with the License.
> > @@ -30,12 +30,13 @@ static bool ovsdb_trigger_try(struct ovsdb_trigger *, long long int now);
> >  static void ovsdb_trigger_complete(struct ovsdb_trigger *);
> >
> >  void
> > -ovsdb_trigger_init(struct ovsdb_session *session,
> > +ovsdb_trigger_init(struct ovsdb_session *session, struct ovsdb *db,
> >                     struct ovsdb_trigger *trigger,
> >                     struct json *request, long long int now)
> >  {
> >      trigger->session = session;
> > -    list_push_back(&trigger->session->db->triggers, &trigger->node);
> > +    trigger->db = db;
> > +    list_push_back(&trigger->db->triggers, &trigger->node);
> >      trigger->request = request;
> >      trigger->result = NULL;
> >      trigger->created = now;
> > @@ -110,7 +111,7 @@ ovsdb_trigger_wait(struct ovsdb *db, long long int now)
> >  static bool
> >  ovsdb_trigger_try(struct ovsdb_trigger *t, long long int now)
> >  {
> > -    t->result = ovsdb_execute(t->session->db, t->session,
> > +    t->result = ovsdb_execute(t->db, t->session,
> >                                t->request, now - t->created, &t->timeout_msec);
> >      if (t->result) {
> >          ovsdb_trigger_complete(t);
> > diff --git a/ovsdb/trigger.h b/ovsdb/trigger.h
> > index 1d47f3f..f686b15 100644
> > --- a/ovsdb/trigger.h
> > +++ b/ovsdb/trigger.h
> > @@ -1,4 +1,4 @@
> > -/* Copyright (c) 2009, 2011 Nicira, Inc.
> > +/* Copyright (c) 2009, 2011, 2012 Nicira, Inc.
> >   *
> >   * Licensed under the Apache License, Version 2.0 (the "License");
> >   * you may not use this file except in compliance with the License.
> > @@ -22,7 +22,8 @@ struct ovsdb;
> >
> >  struct ovsdb_trigger {
> >      struct ovsdb_session *session; /* Session that owns this trigger. */
> > -    struct list node;           /* !result: in session->db->triggers;
> > +    struct ovsdb *db;           /* Database on which trigger acts. */
> > +    struct list node;           /* !result: in db->triggers;
> >                                   * result: in session->completions. */
> >      struct json *request;       /* Database request. */
> >      struct json *result;        /* Result (null if none yet). */
> > @@ -30,7 +31,8 @@ struct ovsdb_trigger {
> >      long long int timeout_msec; /* Max wait duration. */
> >  };
> >
> > -void ovsdb_trigger_init(struct ovsdb_session *, struct ovsdb_trigger *,
> > +void ovsdb_trigger_init(struct ovsdb_session *, struct ovsdb *,
> > +                        struct ovsdb_trigger *,
> >                          struct json *request, long long int now);
> >  void ovsdb_trigger_destroy(struct ovsdb_trigger *);
> >
> > diff --git a/tests/ovsdb-server.at b/tests/ovsdb-server.at
> > index b0a3377..f787f5a 100644
> > --- a/tests/ovsdb-server.at
> > +++ b/tests/ovsdb-server.at
> > @@ -142,12 +142,15 @@ AT_CLEANUP
> >
> >  AT_SETUP([database multiplexing implementation])
> >  AT_KEYWORDS([ovsdb server positive])
> > -ordinal_schema > schema
> > -AT_CHECK([ovsdb-tool create db schema], [0], [ignore], [ignore])
> > -AT_CHECK([ovsdb-server --detach --no-chdir --pidfile="`pwd`"/pid --unixctl="`pwd`"/unixctl --remote=punix:socket db], [0], [ignore], [ignore])
> > +ordinal_schema > schema1
> > +constraint_schema > schema2
> > +AT_CHECK([ovsdb-tool create db1 schema1], [0], [ignore], [ignore])
> > +AT_CHECK([ovsdb-tool create db2 schema2], [0], [ignore], [ignore])
> > +AT_CHECK([ovsdb-server --detach --no-chdir --pidfile="`pwd`"/pid --unixctl="`pwd`"/unixctl --remote=punix:socket db1 db2], [0], [ignore], [ignore])
> >  AT_CHECK(
> >    [[ovsdb-client list-dbs unix:socket]],
> > -  [0], [ordinals
> > +  [0], [constraints
> > +ordinals
> >  ], [ignore], [test ! -e pid || kill `cat pid`])
> >  AT_CHECK(
> >    [[test-jsonrpc request unix:socket get_schema [\"nonexistent\"]]], [0],
> > @@ -158,37 +161,67 @@ AT_CLEANUP
> >
> >  AT_SETUP([--remote=db: implementation])
> >  AT_KEYWORDS([ovsdb server positive])
> > +OVS_RUNDIR=`pwd`; export OVS_RUNDIR
> > +OVS_LOGDIR=`pwd`; export OVS_LOGDIR
> >  AT_DATA([schema],
> >    [[{"name": "mydb",
> >       "tables": {
> > +       "Root": {
> > +         "columns": {
> > +           "managers": {
> > +             "type": {
> > +               "key": "string",
> > +               "min": 0,
> > +               "max": "unlimited"}},
> > +           "manager_options": {
> > +             "type": {
> > +               "key": {"type": "uuid", "refTable": "Manager"},
> > +               "min": 0,
> > +               "max": "unlimited"}}}},
> >         "Manager": {
> >           "columns": {
> > -           "manager": {"type": "string"}}}}}
> > +           "target": {
> > +             "type": "string"},
> > +           "is_connected": {
> > +             "type": {
> > +               "key": "boolean",
> > +               "min": 0,
> > +               "max": 1}}}}}}
> >  ]])
> >  AT_CHECK([ovsdb-tool create db schema], [0], [ignore], [ignore])
> >  AT_CHECK(
> >    [[ovsdb-tool transact db \
> >       '["mydb",
> >         {"op": "insert",
> > +        "table": "Root",
> > +        "row": {
> > +          "managers": "punix:socket1",
> > +          "manager_options": ["set", [["named-uuid", "x"]]]}},
> > +       {"op": "insert",
> >          "table": "Manager",
> > -        "row": {"manager": "punix:socket"}}]']], [0], [ignore], [ignore])
> > -AT_CHECK([ovsdb-server --detach --no-chdir --pidfile="`pwd`"/pid --remote=db:Manager,manager --unixctl="`pwd`"/unixctl db], [0], [ignore], [ignore])
> > +        "uuid-name": "x",
> > +        "row": {"target": "punix:socket2"}}]']], [0], [ignore], [ignore])
> > +ON_EXIT([kill `cat ovsdb-server.pid`])
> > +AT_CHECK([ovsdb-server --enable-dummy --detach --no-chdir --pidfile --remote=db:Root,managers --remote=db:Root,manager_options --log-file db], [0], [ignore], [ignore])
> > +for i in 1 2 3 4 5 6; do ovs-appctl -t ovsdb-server time/warp 1000; done
> >  AT_CHECK(
> > -  [[ovsdb-client transact unix:socket \
> > +  [[ovsdb-client transact unix:socket1 \
> >       '["mydb",
> >         {"op": "select",
> > +        "table": "Root",
> > +        "where": [],
> > +        "columns": ["managers"]},
> > +       {"op": "select",
> >          "table": "Manager",
> >          "where": [],
> > -        "columns": ["manager"]}]']],
> > -  [0], [stdout], [ignore], [test ! -e pid || kill `cat pid`])
> > +        "columns": ["target", "is_connected"]}]']],
> > +  [0], [stdout], [ignore])
> >  AT_CHECK(
> >    [perl $srcdir/uuidfilt.pl stdout],
> >    [0],
> > -  [[[{"rows":[{"manager":"punix:socket"}]}]
> > +  [[[{"rows":[{"managers":"punix:socket1"}]},{"rows":[{"is_connected":false,"target":"punix:socket2"}]}]
> >  ]],
> > -  [ignore],
> > -  [test ! -e pid || kill `cat pid`])
> > -OVSDB_SERVER_SHUTDOWN
> > +  [ignore])
> >  AT_CLEANUP
> >
> >  AT_SETUP([SSL db: implementation])
> > diff --git a/tests/test-ovsdb.c b/tests/test-ovsdb.c
> > index a1ad2cb..d448109 100644
> > --- a/tests/test-ovsdb.c
> > +++ b/tests/test-ovsdb.c
> > @@ -1294,6 +1294,7 @@ do_trigger(int argc OVS_UNUSED, char *argv[])
> >  {
> >      struct ovsdb_schema *schema;
> >      struct ovsdb_session session;
> > +    struct ovsdb_server server;
> >      struct json *json;
> >      struct ovsdb *db;
> >      long long int now;
> > @@ -1306,7 +1307,9 @@ do_trigger(int argc OVS_UNUSED, char *argv[])
> >      json_destroy(json);
> >      db = ovsdb_create(schema);
> >
> > -    ovsdb_session_init(&session, db);
> > +    ovsdb_server_init(&server);
> > +    ovsdb_server_add_db(&server, db);
> > +    ovsdb_session_init(&session, &server);
> >
> >      now = 0;
> >      number = 0;
> > @@ -1321,7 +1324,7 @@ do_trigger(int argc OVS_UNUSED, char *argv[])
> >              json_destroy(params);
> >          } else {
> >              struct test_trigger *t = xmalloc(sizeof *t);
> > -            ovsdb_trigger_init(&session, &t->trigger, params, now);
> > +            ovsdb_trigger_init(&session, db, &t->trigger, params, now);
> >              t->number = number++;
> >              if (ovsdb_trigger_is_complete(&t->trigger)) {
> >                  do_trigger_dump(t, now, "immediate");
> > @@ -1342,6 +1345,7 @@ do_trigger(int argc OVS_UNUSED, char *argv[])
> >          poll_block();
> >      }
> >
> > +    ovsdb_server_destroy(&server);
> >      ovsdb_destroy(db);
> >  }
> >
> > diff --git a/utilities/ovs-ctl.8 b/utilities/ovs-ctl.8
> > index c730778..22db06b 100644
> > --- a/utilities/ovs-ctl.8
> > +++ b/utilities/ovs-ctl.8
> > @@ -223,6 +223,12 @@ Overrides the file name for the Unix domain socket used to connect to
> >  .IP "\fB\-\-db\-schema=\fIschema\fR"
> >  Overrides the file name for the OVS database schema.
> >  .
> > +.IP "\fB\-\-extra-dbs=\fIfile\fR"
> > +Adds \fIfile\fR as an extra database for \fBovsdb\-server\fR to serve
> > +out.  Multiple space-separated file names may also be specified.
> > +\fIfile\fR should begin with \fB/\fR; if it does not, then it will be
> > +taken as relative to \fIdbdir\fR.
> > +.
> >  .SH "The ``stop'' command"
> >  .
> >  .PP
> > diff --git a/utilities/ovs-ctl.in b/utilities/ovs-ctl.in
> > index 674c3c3..2aa6398 100755
> > --- a/utilities/ovs-ctl.in
> > +++ b/utilities/ovs-ctl.in
> > @@ -189,9 +189,23 @@ start_ovsdb () {
> >
> >          # Start ovsdb-server.
> >          set ovsdb-server "$DB_FILE"
> > +        for db in $EXTRA_DBS; do
> > +            case $db in
> > +                /*) ;;
> > +                *) db=$dbdir/$db ;;
> > +            esac
> > +
> > +            if test ! -f "$db"; then
> > +                log_warning_msg "$db (from \$EXTRA_DBS) does not exist."
> > +            elif ovsdb-tool db-version "$db" >/dev/null; then
> > +                set "$@" "$db"
> > +            else
> > +                log_warning_msg "$db (from \$EXTRA_DBS) cannot be read as a database (see error message above)"
> > +            fi
> > +        done
> >          set "$@" -vconsole:emer -vsyslog:err -vfile:info
> >          set "$@" --remote=punix:"$DB_SOCK"
> > -        set "$@" --remote=db:Open_vSwitch,manager_options
> > +        set "$@" --remote=db:Open_vSwitch,Open_vSwitch,manager_options
> >          set "$@" --private-key=db:SSL,private_key
> >          set "$@" --certificate=db:SSL,certificate
> >          set "$@" --bootstrap-ca-cert=db:SSL,ca_cert
> > @@ -406,6 +420,7 @@ set_defaults () {
> >      DB_FILE=$dbdir/conf.db
> >      DB_SOCK=$rundir/db.sock
> >      DB_SCHEMA=$datadir/vswitch.ovsschema
> > +    EXTRA_DBS=
> >
> >      PROTOCOL=gre
> >      DPORT=
> > --
> > 1.7.2.5
> >
> > _______________________________________________
> > dev mailing list
> > dev at openvswitch.org
> > http://openvswitch.org/mailman/listinfo/dev



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