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+# Copyright (C) 2012-2013 Internet Systems Consortium.
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+#
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+# Permission to use, copy, modify, and distribute this software for any
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+# purpose with or without fee is hereby granted, provided that the above
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+# copyright notice and this permission notice appear in all copies.
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+#
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+# THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SYSTEMS CONSORTIUM
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+# DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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+# INTERNET SYSTEMS CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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+# FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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+# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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+# WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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+
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+# This is the BIND 10 DHCP schema specification for MySQL.
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+#
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+# The schema is reasonably portable (with the exception of the engine
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+# specification, which is MySQL-specific). Minor changes might be needed for
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+# other databases.
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+
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+# To create the schema, either type the command:
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+#
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+# mysql -u <user> -p <password> <database> < dhcpdb_create.mysql
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+#
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+# ... at the command prompt, or log in to the MySQL database and at the "mysql>"
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+# prompt, issue the command:
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+#
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+# source dhcpdb_create.mysql
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+
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+
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+# Holds the IPv4 leases.
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+CREATE TABLE lease4 (
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+ address INT UNSIGNED PRIMARY KEY NOT NULL, # IPv4 address
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+ hwaddr VARBINARY(20), # Hardware address
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+ client_id VARBINARY(128), # Client ID
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+ valid_lifetime INT UNSIGNED, # Length of the lease (seconds)
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+ expire TIMESTAMP, # Expiration time of the lease
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+ subnet_id INT UNSIGNED, # Subnet identification
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+ fqdn_fwd BOOL, # Has forward DNS update been performed by a server
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+ fqdn_rev BOOL, # Has reverse DNS update been performed by a server
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+ hostname VARCHAR(255) # The FQDN of the client
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+ ) ENGINE = INNODB;
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+
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+
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+# Create search indexes for lease4 table
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+# index by hwaddr and subnet_id
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+CREATE INDEX lease4_by_hwaddr_subnet_id ON lease4 (hwaddr, subnet_id);
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+
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+# index by client_id and subnet_id
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+CREATE INDEX lease4_by_client_id_subnet_id ON lease4 (client_id, subnet_id);
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+
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+# Holds the IPv6 leases.
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+# N.B. The use of a VARCHAR for the address is temporary for development:
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+# it will eventually be replaced by BINARY(16).
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+CREATE TABLE lease6 (
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+ address VARCHAR(39) PRIMARY KEY NOT NULL, # IPv6 address
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+ duid VARBINARY(128), # DUID
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+ valid_lifetime INT UNSIGNED, # Length of the lease (seconds)
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+ expire TIMESTAMP, # Expiration time of the lease
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+ subnet_id INT UNSIGNED, # Subnet identification
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+ pref_lifetime INT UNSIGNED, # Preferred lifetime
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+ lease_type TINYINT, # Lease type (see lease6_types
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+ # table for possible values)
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+ iaid INT UNSIGNED, # See Section 10 of RFC 3315
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+ prefix_len TINYINT UNSIGNED, # For IA_PD only
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+ fqdn_fwd BOOL, # Has forward DNS update been performed by a server
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+ fqdn_rev BOOL, # Has reverse DNS update been performed by a server
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+ hostname VARCHAR(255) # The FQDN of the client
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+
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+ ) ENGINE = INNODB;
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+
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+# Create search indexes for lease4 table
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+# index by iaid, subnet_id, and duid
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+CREATE INDEX lease6_by_iaid_subnet_id_duid ON lease6 (iaid, subnet_id, duid);
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+
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+# ... and a definition of lease6 types. This table is a convenience for
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+# users of the database - if they want to view the lease table and use the
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+# type names, they can join this table with the lease6 table.
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+# Make sure those values match Lease6::LeaseType enum (see src/bin/dhcpsrv/
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+# lease_mgr.h)
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+CREATE TABLE lease6_types (
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+ lease_type TINYINT PRIMARY KEY NOT NULL, # Lease type code.
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+ name VARCHAR(5) # Name of the lease type
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+ );
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+START TRANSACTION;
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+INSERT INTO lease6_types VALUES (0, "IA_NA"); # Non-temporary v6 addresses
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+INSERT INTO lease6_types VALUES (1, "IA_TA"); # Temporary v6 addresses
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+INSERT INTO lease6_types VALUES (2, "IA_PD"); # Prefix delegations
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+COMMIT;
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+
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+# Finally, the version of the schema. We start at 0.1 during development.
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+# This table is only modified during schema upgrades. For historical reasons
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+# (related to the names of the columns in the BIND 10 DNS database file), the
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+# first column is called "version" and not "major".
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+#
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+# NOTE: this MUST be kept in step with src/lib/dhcpsrv/tests/schema_copy.h,
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+# which defines the schema for the unit tests. If you are updating
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+# the version number, the schema has changed: please ensure that
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+# schema_copy.h has been updated as well.
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+CREATE TABLE schema_version (
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+ version INT PRIMARY KEY NOT NULL, # Major version number
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+ minor INT # Minor version number
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+ );
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+START TRANSACTION;
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+INSERT INTO schema_version VALUES (1, 0);
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+COMMIT;
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+
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+# Notes:
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+#
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+# Indexes
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+# =======
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+# It is likely that additional indexes will be needed. However, the
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+# increase in lookup performance from these will come at the expense
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+# of a decrease in performance during insert operations due to the need
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+# to update the indexes. For this reason, the need for additional indexes
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+# will be determined by experiment during performance tests.
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+#
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+# The most likely additional indexes will cover the following columns:
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+#
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+# expire
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+# To speed up the deletion of expired leases from the database.
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+#
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+# hwaddr and client_id
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+# For lease stability: if a client requests a new lease, try to find an
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+# existing or recently expired lease for it so that it can keep using the
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+# same IP address.
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+#
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+# Field Sizes
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+# ===========
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+# If any of the VARxxx field sizes are altered, the lengths in the MySQL
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+# backend source file (mysql_lease_mgr.cc) must be correspondingly changed.
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+#
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+# Portability
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+# ===========
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+# The "ENGINE = INNODB" on some tables is not portablea to another database
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+# and will need to be removed.
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+#
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+# Some columns contain binary data so are stored as VARBINARY instead of
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+# VARCHAR. This may be non-portable between databases: in this case, the
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+# definition should be changed to VARCHAR.
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