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-rw-r--r--src/test/common/dns_resolve.cc263
1 files changed, 263 insertions, 0 deletions
diff --git a/src/test/common/dns_resolve.cc b/src/test/common/dns_resolve.cc
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+++ b/src/test/common/dns_resolve.cc
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2016 SUSE LINUX GmbH
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+#include <arpa/nameser_compat.h>
+
+#include "common/dns_resolve.h"
+#include "test/common/dns_messages.h"
+
+#include "common/debug.h"
+#include "gmock/gmock.h"
+
+
+#include <sstream>
+
+#define TEST_DEBUG 20
+
+#define dout_subsys ceph_subsys_
+
+using namespace std;
+
+using ::testing::Return;
+using ::testing::_;
+using ::testing::SetArrayArgument;
+using ::testing::DoAll;
+using ::testing::StrEq;
+
+class DNSResolverTest : public ::testing::Test {
+ protected:
+ void SetUp() override {
+ g_ceph_context->_conf->subsys.set_log_level(dout_subsys, TEST_DEBUG);
+ }
+
+ void TearDown() override {
+ DNSResolver::get_instance(nullptr);
+ }
+};
+
+TEST_F(DNSResolverTest, resolve_ip_addr) {
+ MockResolvHWrapper *resolvH = new MockResolvHWrapper();
+
+ int lena = sizeof(ns_query_msg_mon_a_payload);
+#ifdef HAVE_RES_NQUERY
+ EXPECT_CALL(*resolvH, res_nquery(_,StrEq("mon.a.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<4>(ns_query_msg_mon_a_payload,
+ ns_query_msg_mon_a_payload+lena), Return(lena)));
+#else
+ EXPECT_CALL(*resolvH, res_query(StrEq("mon.a.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<3>(ns_query_msg_mon_a_payload,
+ ns_query_msg_mon_a_payload+lena), Return(lena)));
+#endif
+
+ entity_addr_t addr;
+ DNSResolver::get_instance(resolvH)->resolve_ip_addr(g_ceph_context,
+ "mon.a.ceph.com", &addr);
+
+ std::ostringstream os;
+ os << addr;
+ ASSERT_EQ(os.str(), "v2:192.168.1.11:0/0");
+}
+
+TEST_F(DNSResolverTest, resolve_ip_addr_fail) {
+ MockResolvHWrapper *resolvH = new MockResolvHWrapper();
+
+#ifdef HAVE_RES_NQUERY
+ EXPECT_CALL(*resolvH, res_nquery(_,StrEq("not_exists.com"), C_IN, T_A,_,_))
+ .WillOnce(Return(0));
+#else
+ EXPECT_CALL(*resolvH, res_query(StrEq("not_exists.com"), C_IN, T_A,_,_))
+ .WillOnce(Return(0));
+#endif
+
+ entity_addr_t addr;
+ int ret = DNSResolver::get_instance(resolvH)->resolve_ip_addr(g_ceph_context,
+ "not_exists.com", &addr);
+
+ ASSERT_EQ(ret, -1);
+ std::ostringstream os;
+ os << addr;
+ ASSERT_EQ(os.str(), "-");
+}
+
+
+TEST_F(DNSResolverTest, resolve_srv_hosts_empty_domain) {
+ MockResolvHWrapper *resolvH = new MockResolvHWrapper();
+
+
+ int len = sizeof(ns_search_msg_ok_payload);
+ int lena = sizeof(ns_query_msg_mon_a_payload);
+ int lenb = sizeof(ns_query_msg_mon_b_payload);
+ int lenc = sizeof(ns_query_msg_mon_c_payload);
+
+ using ::testing::InSequence;
+ {
+ InSequence s;
+
+#ifdef HAVE_RES_NQUERY
+ EXPECT_CALL(*resolvH, res_nsearch(_, StrEq("_cephmon._tcp"), C_IN, T_SRV, _, _))
+ .WillOnce(DoAll(SetArrayArgument<4>(ns_search_msg_ok_payload,
+ ns_search_msg_ok_payload+len), Return(len)));
+
+ EXPECT_CALL(*resolvH, res_nquery(_,StrEq("mon.a.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<4>(ns_query_msg_mon_a_payload,
+ ns_query_msg_mon_a_payload+lena), Return(lena)));
+
+ EXPECT_CALL(*resolvH, res_nquery(_, StrEq("mon.c.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<4>(ns_query_msg_mon_c_payload,
+ ns_query_msg_mon_c_payload+lenc), Return(lenc)));
+
+ EXPECT_CALL(*resolvH, res_nquery(_,StrEq("mon.b.ceph.com"), C_IN, T_A, _,_))
+ .WillOnce(DoAll(SetArrayArgument<4>(ns_query_msg_mon_b_payload,
+ ns_query_msg_mon_b_payload+lenb), Return(lenb)));
+#else
+ EXPECT_CALL(*resolvH, res_search(StrEq("_cephmon._tcp"), C_IN, T_SRV, _, _))
+ .WillOnce(DoAll(SetArrayArgument<3>(ns_search_msg_ok_payload,
+ ns_search_msg_ok_payload+len), Return(len)));
+
+ EXPECT_CALL(*resolvH, res_query(StrEq("mon.a.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<3>(ns_query_msg_mon_a_payload,
+ ns_query_msg_mon_a_payload+lena), Return(lena)));
+
+ EXPECT_CALL(*resolvH, res_query(StrEq("mon.c.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<3>(ns_query_msg_mon_c_payload,
+ ns_query_msg_mon_c_payload+lenc), Return(lenc)));
+
+ EXPECT_CALL(*resolvH, res_query(StrEq("mon.b.ceph.com"), C_IN, T_A, _,_))
+ .WillOnce(DoAll(SetArrayArgument<3>(ns_query_msg_mon_b_payload,
+ ns_query_msg_mon_b_payload+lenb), Return(lenb)));
+#endif
+ }
+
+ map<string, DNSResolver::Record> records;
+ DNSResolver::get_instance(resolvH)->resolve_srv_hosts(g_ceph_context, "cephmon",
+ DNSResolver::SRV_Protocol::TCP, &records);
+
+ ASSERT_EQ(records.size(), (unsigned int)3);
+ auto it = records.find("mon.a");
+ ASSERT_NE(it, records.end());
+ std::ostringstream os;
+ os << it->second.addr;
+ ASSERT_EQ(os.str(), "v2:192.168.1.11:6789/0");
+ os.str("");
+ ASSERT_EQ(it->second.priority, 10);
+ ASSERT_EQ(it->second.weight, 40);
+ it = records.find("mon.b");
+ ASSERT_NE(it, records.end());
+ os << it->second.addr;
+ ASSERT_EQ(os.str(), "v2:192.168.1.12:6789/0");
+ os.str("");
+ ASSERT_EQ(it->second.priority, 10);
+ ASSERT_EQ(it->second.weight, 35);
+ it = records.find("mon.c");
+ ASSERT_NE(it, records.end());
+ os << it->second.addr;
+ ASSERT_EQ(os.str(), "v2:192.168.1.13:6789/0");
+ ASSERT_EQ(it->second.priority, 10);
+ ASSERT_EQ(it->second.weight, 25);
+}
+
+TEST_F(DNSResolverTest, resolve_srv_hosts_full_domain) {
+ MockResolvHWrapper *resolvH = new MockResolvHWrapper();
+
+
+ int len = sizeof(ns_search_msg_ok_payload);
+ int lena = sizeof(ns_query_msg_mon_a_payload);
+ int lenb = sizeof(ns_query_msg_mon_b_payload);
+ int lenc = sizeof(ns_query_msg_mon_c_payload);
+
+ using ::testing::InSequence;
+ {
+ InSequence s;
+
+#ifdef HAVE_RES_NQUERY
+ EXPECT_CALL(*resolvH, res_nsearch(_, StrEq("_cephmon._tcp.ceph.com"), C_IN, T_SRV, _, _))
+ .WillOnce(DoAll(SetArrayArgument<4>(ns_search_msg_ok_payload,
+ ns_search_msg_ok_payload+len), Return(len)));
+
+ EXPECT_CALL(*resolvH, res_nquery(_,StrEq("mon.a.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<4>(ns_query_msg_mon_a_payload,
+ ns_query_msg_mon_a_payload+lena), Return(lena)));
+
+ EXPECT_CALL(*resolvH, res_nquery(_, StrEq("mon.c.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<4>(ns_query_msg_mon_c_payload,
+ ns_query_msg_mon_c_payload+lenc), Return(lenc)));
+
+ EXPECT_CALL(*resolvH, res_nquery(_,StrEq("mon.b.ceph.com"), C_IN, T_A, _,_))
+ .WillOnce(DoAll(SetArrayArgument<4>(ns_query_msg_mon_b_payload,
+ ns_query_msg_mon_b_payload+lenb), Return(lenb)));
+#else
+ EXPECT_CALL(*resolvH, res_search(StrEq("_cephmon._tcp.ceph.com"), C_IN, T_SRV, _, _))
+ .WillOnce(DoAll(SetArrayArgument<3>(ns_search_msg_ok_payload,
+ ns_search_msg_ok_payload+len), Return(len)));
+
+ EXPECT_CALL(*resolvH, res_query(StrEq("mon.a.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<3>(ns_query_msg_mon_a_payload,
+ ns_query_msg_mon_a_payload+lena), Return(lena)));
+
+ EXPECT_CALL(*resolvH, res_query(StrEq("mon.c.ceph.com"), C_IN, T_A,_,_))
+ .WillOnce(DoAll(SetArrayArgument<3>(ns_query_msg_mon_c_payload,
+ ns_query_msg_mon_c_payload+lenc), Return(lenc)));
+
+ EXPECT_CALL(*resolvH, res_query(StrEq("mon.b.ceph.com"), C_IN, T_A, _,_))
+ .WillOnce(DoAll(SetArrayArgument<3>(ns_query_msg_mon_b_payload,
+ ns_query_msg_mon_b_payload+lenb), Return(lenb)));
+#endif
+ }
+
+ map<string, DNSResolver::Record> records;
+ DNSResolver::get_instance(resolvH)->resolve_srv_hosts(g_ceph_context, "cephmon",
+ DNSResolver::SRV_Protocol::TCP, "ceph.com", &records);
+
+ ASSERT_EQ(records.size(), (unsigned int)3);
+ auto it = records.find("mon.a");
+ ASSERT_NE(it, records.end());
+ std::ostringstream os;
+ os << it->second.addr;
+ ASSERT_EQ(os.str(), "v2:192.168.1.11:6789/0");
+ os.str("");
+ it = records.find("mon.b");
+ ASSERT_NE(it, records.end());
+ os << it->second.addr;
+ ASSERT_EQ(os.str(), "v2:192.168.1.12:6789/0");
+ os.str("");
+ it = records.find("mon.c");
+ ASSERT_NE(it, records.end());
+ os << it->second.addr;
+ ASSERT_EQ(os.str(), "v2:192.168.1.13:6789/0");
+}
+
+TEST_F(DNSResolverTest, resolve_srv_hosts_fail) {
+ MockResolvHWrapper *resolvH = new MockResolvHWrapper();
+
+
+ using ::testing::InSequence;
+ {
+ InSequence s;
+
+#ifdef HAVE_RES_NQUERY
+ EXPECT_CALL(*resolvH, res_nsearch(_, StrEq("_noservice._tcp"), C_IN, T_SRV, _, _))
+ .WillOnce(Return(0));
+#else
+ EXPECT_CALL(*resolvH, res_search(StrEq("_noservice._tcp"), C_IN, T_SRV, _, _))
+ .WillOnce(Return(0));
+#endif
+ }
+
+ map<string, DNSResolver::Record> records;
+ int ret = DNSResolver::get_instance(resolvH)->resolve_srv_hosts(
+ g_ceph_context, "noservice", DNSResolver::SRV_Protocol::TCP, "", &records);
+
+ ASSERT_EQ(0, ret);
+ ASSERT_TRUE(records.empty());
+}
+
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