Setting tag sliver-openvswitch-2.2.90-1
[sliver-openvswitch.git] / ovsdb / ovsdb-tool.c
index d6e0ff9..2ae782e 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
 #include <stdlib.h>
 #include <string.h>
 
+#include "column.h"
 #include "command-line.h"
 #include "compiler.h"
+#include "dirs.h"
+#include "dynamic-string.h"
+#include "fatal-signal.h"
 #include "file.h"
+#include "lockfile.h"
+#include "log.h"
 #include "json.h"
 #include "ovsdb.h"
+#include "ovsdb-data.h"
 #include "ovsdb-error.h"
+#include "socket-util.h"
 #include "table.h"
 #include "timeval.h"
 #include "util.h"
-
 #include "vlog.h"
-#define THIS_MODULE VLM_ovsdb_tool
 
-static const struct command all_commands[];
+/* -m, --more: Verbosity level for "show-log" command output. */
+static int show_log_verbosity;
+
+static const struct command *get_all_commands(void);
 
 static void usage(void) NO_RETURN;
 static void parse_options(int argc, char *argv[]);
 
+static const char *default_db(void);
+static const char *default_schema(void);
+
 int
 main(int argc, char *argv[])
 {
     set_program_name(argv[0]);
-    time_init();
-    vlog_init();
     parse_options(argc, argv);
-    signal(SIGPIPE, SIG_IGN);
-    run_command(argc - optind, argv + optind, all_commands);
+    fatal_ignore_sigpipe();
+    run_command(argc - optind, argv + optind, get_all_commands());
     return 0;
 }
 
 static void
 parse_options(int argc, char *argv[])
 {
-    static struct option long_options[] = {
-        {"verbose", optional_argument, 0, 'v'},
-        {"help", no_argument, 0, 'h'},
-        {"version", no_argument, 0, 'V'},
-        {0, 0, 0, 0},
+    static const struct option long_options[] = {
+        {"more", no_argument, NULL, 'm'},
+        {"verbose", optional_argument, NULL, 'v'},
+        {"help", no_argument, NULL, 'h'},
+        {"version", no_argument, NULL, 'V'},
+        {NULL, 0, NULL, 0},
     };
     char *short_options = long_options_to_short_options(long_options);
 
@@ -72,11 +83,15 @@ parse_options(int argc, char *argv[])
         }
 
         switch (c) {
+        case 'm':
+            show_log_verbosity++;
+            break;
+
         case 'h':
             usage();
 
         case 'V':
-            OVS_PRINT_VERSION(0, 0);
+            ovs_print_version(0, 0);
             exit(EXIT_SUCCESS);
 
         case 'v':
@@ -98,18 +113,46 @@ usage(void)
 {
     printf("%s: Open vSwitch database management utility\n"
            "usage: %s [OPTIONS] COMMAND [ARG...]\n"
-           "  create DB SCHEMA   create DB with the given SCHEMA\n"
-           "  compact DB [DST]   compact DB in-place (or to DST)\n"
-           "  extract-schema DB  print DB's schema on stdout\n"
-           "  query DB TRNS      execute read-only transaction on DB\n"
-           "  transact DB TRNS   execute read/write transaction on DB\n",
-           program_name, program_name);
+           "  create [DB [SCHEMA]]    create DB with the given SCHEMA\n"
+           "  compact [DB [DST]]      compact DB in-place (or to DST)\n"
+           "  convert [DB [SCHEMA [DST]]]   convert DB to SCHEMA (to DST)\n"
+           "  db-version [DB]         report version of schema used by DB\n"
+           "  db-cksum [DB]           report checksum of schema used by DB\n"
+           "  schema-version [SCHEMA] report SCHEMA's schema version\n"
+           "  schema-cksum [SCHEMA]   report SCHEMA's checksum\n"
+           "  query [DB] TRNS         execute read-only transaction on DB\n"
+           "  transact [DB] TRNS      execute read/write transaction on DB\n"
+           "  [-m]... show-log [DB]   print DB's log entries\n"
+           "The default DB is %s.\n"
+           "The default SCHEMA is %s.\n",
+           program_name, program_name, default_db(), default_schema());
     vlog_usage();
     printf("\nOther options:\n"
+           "  -m, --more                  increase show-log verbosity\n"
            "  -h, --help                  display this help message\n"
            "  -V, --version               display version information\n");
     exit(EXIT_SUCCESS);
 }
+
+static const char *
+default_db(void)
+{
+    static char *db;
+    if (!db) {
+        db = xasprintf("%s/conf.db", ovs_dbdir());
+    }
+    return db;
+}
+
+static const char *
+default_schema(void)
+{
+    static char *schema;
+    if (!schema) {
+        schema = xasprintf("%s/vswitch.ovsschema", ovs_pkgdatadir());
+    }
+    return schema;
+}
 \f
 static struct json *
 parse_json(const char *s)
@@ -139,38 +182,180 @@ check_ovsdb_error(struct ovsdb_error *error)
 }
 \f
 static void
-do_create(int argc UNUSED, char *argv[])
+do_create(int argc, char *argv[])
 {
-    const char *db_file_name = argv[1];
-    const char *schema_file_name = argv[2];
+    const char *db_file_name = argc >= 2 ? argv[1] : default_db();
+    const char *schema_file_name = argc >= 3 ? argv[2] : default_schema();
     struct ovsdb_schema *schema;
-    struct ovsdb_file *db_file;
+    struct ovsdb_log *log;
     struct json *json;
 
     /* Read schema from file and convert to JSON. */
     check_ovsdb_error(ovsdb_schema_from_file(schema_file_name, &schema));
     json = ovsdb_schema_to_json(schema);
+    ovsdb_schema_destroy(schema);
 
     /* Create database file. */
-    check_ovsdb_error(ovsdb_file_open(db_file_name, O_RDWR | O_CREAT | O_EXCL,
-                                      &db_file));
-    check_ovsdb_error(ovsdb_file_write(db_file, json));
-    check_ovsdb_error(ovsdb_file_commit(db_file));
-    ovsdb_file_close(db_file);
+    check_ovsdb_error(ovsdb_log_open(db_file_name, OVSDB_LOG_CREATE,
+                                     -1, &log));
+    check_ovsdb_error(ovsdb_log_write(log, json));
+    check_ovsdb_error(ovsdb_log_commit(log));
+    ovsdb_log_close(log);
 
     json_destroy(json);
 }
 
 static void
-transact(bool read_only, const char *db_file_name, const char *transaction)
+compact_or_convert(const char *src_name_, const char *dst_name_,
+                   const struct ovsdb_schema *new_schema,
+                   const char *comment)
 {
+    char *src_name, *dst_name;
+    struct lockfile *src_lock;
+    struct lockfile *dst_lock;
+    bool in_place = dst_name_ == NULL;
+    struct ovsdb *db;
+    int retval;
+
+    /* Dereference symlinks for source and destination names.  In the in-place
+     * case this ensures that, if the source name is a symlink, we replace its
+     * target instead of replacing the symlink by a regular file.  In the
+     * non-in-place, this has the same effect for the destination name. */
+    src_name = follow_symlinks(src_name_);
+    dst_name = (in_place
+                ? xasprintf("%s.tmp", src_name)
+                : follow_symlinks(dst_name_));
+
+    /* Lock the source, if we will be replacing it. */
+    if (in_place) {
+        retval = lockfile_lock(src_name, &src_lock);
+        if (retval) {
+            ovs_fatal(retval, "%s: failed to lock lockfile", src_name);
+        }
+    }
+
+    /* Get (temporary) destination and lock it. */
+    retval = lockfile_lock(dst_name, &dst_lock);
+    if (retval) {
+        ovs_fatal(retval, "%s: failed to lock lockfile", dst_name);
+    }
+
+    /* Save a copy. */
+    check_ovsdb_error(new_schema
+                      ? ovsdb_file_open_as_schema(src_name, new_schema, &db)
+                      : ovsdb_file_open(src_name, true, &db, NULL));
+    check_ovsdb_error(ovsdb_file_save_copy(dst_name, false, comment, db));
+    ovsdb_destroy(db);
+
+    /* Replace source. */
+    if (in_place) {
+        if (rename(dst_name, src_name)) {
+            ovs_fatal(errno, "failed to rename \"%s\" to \"%s\"",
+                      dst_name, src_name);
+        }
+        fsync_parent_dir(dst_name);
+        lockfile_unlock(src_lock);
+    }
+
+    lockfile_unlock(dst_lock);
+
+    free(src_name);
+    free(dst_name);
+}
+
+static void
+do_compact(int argc, char *argv[])
+{
+    const char *db = argc >= 2 ? argv[1] : default_db();
+    const char *target = argc >= 3 ? argv[2] : NULL;
+
+    compact_or_convert(db, target, NULL, "compacted by ovsdb-tool "VERSION);
+}
+
+static void
+do_convert(int argc, char *argv[])
+{
+    const char *db = argc >= 2 ? argv[1] : default_db();
+    const char *schema = argc >= 3 ? argv[2] : default_schema();
+    const char *target = argc >= 4 ? argv[3] : NULL;
+    struct ovsdb_schema *new_schema;
+
+    check_ovsdb_error(ovsdb_schema_from_file(schema, &new_schema));
+    compact_or_convert(db, target, new_schema,
+                       "converted by ovsdb-tool "VERSION);
+    ovsdb_schema_destroy(new_schema);
+}
+
+static void
+do_needs_conversion(int argc, char *argv[])
+{
+    const char *db_file_name = argc >= 2 ? argv[1] : default_db();
+    const char *schema_file_name = argc >= 3 ? argv[2] : default_schema();
+    struct ovsdb_schema *schema1, *schema2;
+
+    check_ovsdb_error(ovsdb_file_read_schema(db_file_name, &schema1));
+    check_ovsdb_error(ovsdb_schema_from_file(schema_file_name, &schema2));
+    puts(ovsdb_schema_equal(schema1, schema2) ? "no" : "yes");
+    ovsdb_schema_destroy(schema1);
+    ovsdb_schema_destroy(schema2);
+}
+
+static void
+do_db_version(int argc, char *argv[])
+{
+    const char *db_file_name = argc >= 2 ? argv[1] : default_db();
+    struct ovsdb_schema *schema;
+
+    check_ovsdb_error(ovsdb_file_read_schema(db_file_name, &schema));
+    puts(schema->version);
+    ovsdb_schema_destroy(schema);
+}
+
+static void
+do_db_cksum(int argc OVS_UNUSED, char *argv[])
+{
+    const char *db_file_name = argc >= 2 ? argv[1] : default_db();
+    struct ovsdb_schema *schema;
+
+    check_ovsdb_error(ovsdb_file_read_schema(db_file_name, &schema));
+    puts(schema->cksum);
+    ovsdb_schema_destroy(schema);
+}
+
+static void
+do_schema_version(int argc, char *argv[])
+{
+    const char *schema_file_name = argc >= 2 ? argv[1] : default_schema();
+    struct ovsdb_schema *schema;
+
+    check_ovsdb_error(ovsdb_schema_from_file(schema_file_name, &schema));
+    puts(schema->version);
+    ovsdb_schema_destroy(schema);
+}
+
+static void
+do_schema_cksum(int argc, char *argv[])
+{
+    const char *schema_file_name = argc >= 2 ? argv[1] : default_schema();
+    struct ovsdb_schema *schema;
+
+    check_ovsdb_error(ovsdb_schema_from_file(schema_file_name, &schema));
+    puts(schema->cksum);
+    ovsdb_schema_destroy(schema);
+}
+
+static void
+transact(bool read_only, int argc, char *argv[])
+{
+    const char *db_file_name = argc >= 3 ? argv[1] : default_db();
+    const char *transaction = argv[argc - 1];
     struct json *request, *result;
     struct ovsdb *db;
 
-    check_ovsdb_error(ovsdb_open(db_file_name, read_only, &db));
+    check_ovsdb_error(ovsdb_file_open(db_file_name, read_only, &db, NULL));
 
     request = parse_json(transaction);
-    result = ovsdb_execute(db, request, 0, NULL);
+    result = ovsdb_execute(db, NULL, request, 0, NULL);
     json_destroy(request);
 
     print_and_free_json(result);
@@ -178,27 +363,215 @@ transact(bool read_only, const char *db_file_name, const char *transaction)
 }
 
 static void
-do_query(int argc UNUSED, char *argv[])
+do_query(int argc, char *argv[])
+{
+    transact(true, argc, argv);
+}
+
+static void
+do_transact(int argc, char *argv[])
+{
+    transact(false, argc, argv);
+}
+
+static void
+print_db_changes(struct shash *tables, struct shash *names,
+                 const struct ovsdb_schema *schema)
 {
-    transact(true, argv[1], argv[2]);
+    struct shash_node *n1;
+
+    SHASH_FOR_EACH (n1, tables) {
+        const char *table = n1->name;
+        struct ovsdb_table_schema *table_schema;
+        struct json *rows = n1->data;
+        struct shash_node *n2;
+
+        if (n1->name[0] == '_' || rows->type != JSON_OBJECT) {
+            continue;
+        }
+
+        table_schema = shash_find_data(&schema->tables, table);
+        SHASH_FOR_EACH (n2, json_object(rows)) {
+            const char *row_uuid = n2->name;
+            struct json *columns = n2->data;
+            struct shash_node *n3;
+            char *old_name, *new_name;
+            bool free_new_name = false;
+
+            old_name = new_name = shash_find_data(names, row_uuid);
+            if (columns->type == JSON_OBJECT) {
+                struct json *new_name_json;
+
+                new_name_json = shash_find_data(json_object(columns), "name");
+                if (new_name_json) {
+                    new_name = json_to_string(new_name_json, JSSF_SORT);
+                    free_new_name = true;
+                }
+            }
+
+            printf("\ttable %s", table);
+
+            if (!old_name) {
+                if (new_name) {
+                    printf(" insert row %s (%.8s):\n", new_name, row_uuid);
+                } else {
+                    printf(" insert row %.8s:\n", row_uuid);
+                }
+            } else {
+                printf(" row %s (%.8s):\n", old_name, row_uuid);
+            }
+
+            if (columns->type == JSON_OBJECT) {
+                if (show_log_verbosity > 1) {
+                    SHASH_FOR_EACH (n3, json_object(columns)) {
+                        const char *column = n3->name;
+                        const struct ovsdb_column *column_schema;
+                        struct json *value = n3->data;
+                        char *value_string = NULL;
+
+                        column_schema =
+                            (table_schema
+                             ? shash_find_data(&table_schema->columns, column)
+                             : NULL);
+                        if (column_schema) {
+                            const struct ovsdb_type *type;
+                            struct ovsdb_error *error;
+                            struct ovsdb_datum datum;
+
+                            type = &column_schema->type;
+                            error = ovsdb_datum_from_json(&datum, type,
+                                                          value, NULL);
+                            if (!error) {
+                                struct ds s;
+
+                                ds_init(&s);
+                                ovsdb_datum_to_string(&datum, type, &s);
+                                value_string = ds_steal_cstr(&s);
+                            } else {
+                                ovsdb_error_destroy(error);
+                            }
+                        }
+                        if (!value_string) {
+                            value_string = json_to_string(value, JSSF_SORT);
+                        }
+                        printf("\t\t%s=%s\n", column, value_string);
+                        free(value_string);
+                    }
+                }
+                if (!old_name
+                    || (new_name != old_name && strcmp(old_name, new_name))) {
+                    if (old_name) {
+                        shash_delete(names, shash_find(names, row_uuid));
+                        free(old_name);
+                    }
+                    shash_add(names, row_uuid, (new_name
+                                                ? xstrdup(new_name)
+                                                : xmemdup0(row_uuid, 8)));
+                }
+            } else if (columns->type == JSON_NULL) {
+                struct shash_node *node;
+
+                printf("\t\tdelete row\n");
+                node = shash_find(names, row_uuid);
+                if (node) {
+                    shash_delete(names, node);
+                }
+                free(old_name);
+            }
+
+            if (free_new_name) {
+                free(new_name);
+            }
+        }
+    }
 }
 
 static void
-do_transact(int argc UNUSED, char *argv[])
+do_show_log(int argc, char *argv[])
 {
-    transact(false, argv[1], argv[2]);
+    const char *db_file_name = argc >= 2 ? argv[1] : default_db();
+    struct shash names;
+    struct ovsdb_log *log;
+    struct ovsdb_schema *schema;
+    unsigned int i;
+
+    check_ovsdb_error(ovsdb_log_open(db_file_name, OVSDB_LOG_READ_ONLY,
+                                     -1, &log));
+    shash_init(&names);
+    schema = NULL;
+    for (i = 0; ; i++) {
+        struct json *json;
+
+        check_ovsdb_error(ovsdb_log_read(log, &json));
+        if (!json) {
+            break;
+        }
+
+        printf("record %u:", i);
+        if (i == 0) {
+            check_ovsdb_error(ovsdb_schema_from_json(json, &schema));
+            printf(" \"%s\" schema, version=\"%s\", cksum=\"%s\"\n",
+                   schema->name, schema->version, schema->cksum);
+        } else if (json->type == JSON_OBJECT) {
+            struct json *date, *comment;
+
+            date = shash_find_data(json_object(json), "_date");
+            if (date && date->type == JSON_INTEGER) {
+                long long int t = json_integer(date);
+                char *s;
+
+                if (t < INT32_MAX) {
+                    /* Older versions of ovsdb wrote timestamps in seconds. */
+                    t *= 1000;
+                }
+
+                s = xastrftime_msec(" %Y-%m-%d %H:%M:%S.###", t, true);
+                fputs(s, stdout);
+                free(s);
+            }
+
+            comment = shash_find_data(json_object(json), "_comment");
+            if (comment && comment->type == JSON_STRING) {
+                printf(" \"%s\"", json_string(comment));
+            }
+
+            if (i > 0 && show_log_verbosity > 0) {
+                putchar('\n');
+                print_db_changes(json_object(json), &names, schema);
+            }
+        }
+        json_destroy(json);
+        putchar('\n');
+    }
+
+    ovsdb_log_close(log);
+    ovsdb_schema_destroy(schema);
+    /* XXX free 'names'. */
 }
 
 static void
-do_help(int argc UNUSED, char *argv[] UNUSED)
+do_help(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
 {
     usage();
 }
 
 static const struct command all_commands[] = {
-    { "create", 2, 2, do_create },
-    { "query", 2, 2, do_query },
-    { "transact", 2, 2, do_transact },
+    { "create", 0, 2, do_create },
+    { "compact", 0, 2, do_compact },
+    { "convert", 0, 3, do_convert },
+    { "needs-conversion", 0, 2, do_needs_conversion },
+    { "db-version", 0, 1, do_db_version },
+    { "db-cksum", 0, 1, do_db_cksum },
+    { "schema-version", 0, 1, do_schema_version },
+    { "schema-cksum", 0, 1, do_schema_cksum },
+    { "query", 1, 2, do_query },
+    { "transact", 1, 2, do_transact },
+    { "show-log", 0, 1, do_show_log },
     { "help", 0, INT_MAX, do_help },
     { NULL, 0, 0, NULL },
 };
+
+static const struct command *get_all_commands(void)
+{
+    return all_commands;
+}