[master] merge dyndb
4224. [func] Added support for "dyndb", a new interface for loading zone data from an external database, developed by Red Hat for the FreeIPA project. DynDB drivers fully implement the BIND database API, and are capable of significantly better performance and functionality than DLZ drivers, while taking advantage of advanced database features not available in BIND such as multi-master replication. Thanks to Adam Tkac and Petr Spacek of Red Hat. [RT #35271]
This commit is contained in:
Evan Hunt
154
bin/tests/system/dyndb/driver/instance.c
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154
bin/tests/system/dyndb/driver/instance.c
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/*
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* Driver instance object.
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*
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* One instance is equivalent to dynamic-db section in named.conf.
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* This module parses arguments and provide high-level operations
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* instance init/zone load/instance destroy.
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*
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* Copyright (C) 2008-2015 Red Hat ; see COPYRIGHT for license
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*/
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#include <config.h>
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#include <isc/task.h>
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#include <isc/util.h>
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#include <dns/db.h>
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#include <dns/dyndb.h>
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#include <dns/fixedname.h>
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#include <dns/name.h>
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#include <dns/view.h>
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#include <dns/zone.h>
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#include "db.h"
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#include "util.h"
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#include "instance.h"
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#include "log.h"
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#include "zone.h"
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/*
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* Parse parameters and convert them to zone names. Caller has to deallocate
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* resulting DNS names.
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*
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* @param[in] argv NULL-terminated string array of length 2 (excluding NULL)
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* Each string has to be a valid DNS name.
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* @param[out] z1 Zone name from argv[0]
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* @param[out] z2 Zone name from argv[1]
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*/
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static isc_result_t
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parse_params(isc_mem_t *mctx, int argc, char **argv,
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dns_name_t *z1, dns_name_t *z2)
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{
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isc_result_t result;
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int i;
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REQUIRE(argv != NULL);
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REQUIRE(z1 != NULL);
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REQUIRE(z2 != NULL);
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for (i = 0; i < argc; i++) {
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log_info("param: '%s'", argv[i]);
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}
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log_info("number of params: %d", i);
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if (argc != 2) {
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log_error("exactly two parameters "
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"(absolute zone names) are required");
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result = ISC_R_FAILURE;
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goto cleanup;
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}
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CHECK(dns_name_fromstring2(z1, argv[0], dns_rootname, 0, mctx));
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CHECK(dns_name_fromstring2(z2, argv[1], dns_rootname, 0, mctx));
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result = ISC_R_SUCCESS;
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cleanup:
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return (result);
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}
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/*
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* Initialize new driver instance. It will not create zones until
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* load_sample_instance_zones() is called.
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*/
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isc_result_t
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new_sample_instance(isc_mem_t *mctx, const char *db_name,
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int argc, char **argv, const dns_dyndbctx_t *dctx,
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sample_instance_t **sample_instp)
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{
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isc_result_t result;
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sample_instance_t *inst = NULL;
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REQUIRE(sample_instp != NULL && *sample_instp == NULL);
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CHECKED_MEM_GET_PTR(mctx, inst);
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ZERO_PTR(inst);
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inst->db_name = db_name; /* const during lifetime of inst */
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isc_mem_attach(mctx, &inst->mctx);
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dns_fixedname_init(&inst->zone1_fn);
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inst->zone1_name = dns_fixedname_name(&inst->zone1_fn);
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dns_fixedname_init(&inst->zone2_fn);
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inst->zone2_name = dns_fixedname_name(&inst->zone2_fn);
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CHECK(parse_params(mctx, argc, argv,
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inst->zone1_name, inst->zone2_name));
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dns_view_attach(dctx->view, &inst->view);
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dns_zonemgr_attach(dctx->zmgr, &inst->zmgr);
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isc_task_attach(dctx->task, &inst->task);
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/* Register new DNS DB implementation. */
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CHECK(dns_db_register(db_name, create_db, inst, mctx, &inst->db_imp));
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*sample_instp = inst;
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result = ISC_R_SUCCESS;
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cleanup:
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if (result != ISC_R_SUCCESS)
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destroy_sample_instance(&inst);
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return (result);
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}
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/*
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* Create empty zones, add fake SOA, NS, and A records, load fake zones
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* and add them to inst->view.
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*/
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isc_result_t
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load_sample_instance_zones(sample_instance_t *inst) {
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isc_result_t result;
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CHECK(create_zone(inst, inst->zone1_name, &inst->zone1));
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CHECK(activate_zone(inst, inst->zone1));
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CHECK(create_zone(inst, inst->zone2_name, &inst->zone2));
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CHECK(activate_zone(inst, inst->zone2));
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cleanup:
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return (result);
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}
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void
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destroy_sample_instance(sample_instance_t **instp) {
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sample_instance_t *inst;
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REQUIRE(instp != NULL);
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inst = *instp;
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if (inst == NULL)
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return;
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if (inst->zone1 != NULL)
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dns_zone_detach(&inst->zone1);
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if (inst->zone2 != NULL)
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dns_zone_detach(&inst->zone2);
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if (inst->db_imp != NULL)
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dns_db_unregister(&inst->db_imp);
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dns_view_detach(&inst->view);
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dns_zonemgr_detach(&inst->zmgr);
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isc_task_detach(&inst->task);
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MEM_PUT_AND_DETACH(inst);
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*instp = NULL;
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}
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