CIdXmlUtility::~CIdXmlUtility()
{
if(m_bDomExists)
{
CHECK_DELETE(m_domParser);
}
}
void CIdXmlUtility::CreateDOM()
{
g_tLog.WriteLog ("ENTER : CIdXmlUtility :: CreateDOM");
if(m_bDomExists)
{
g_tLog.WriteLog ("Drop the existing DOM tree");
CHECK_DELETE(m_domParser); // Drop the existing DOM tree
}
else
{
g_tLog.WriteLog ("Creating the new DOM tree");
m_bDomExists = true;
}
#if defined(WIN32) && !defined(__CYGWIN__)
m_domParser = new CDOMParser();
#else
m_domParser = new CDOMParserSTL();
#endif
g_tLog.WriteLog ("EXIT : CIdXmlUtility :: CreateDOM");
}
/* Tests the loading/dumping of PageInfo from and into LMDB values */
void
test_page_info_serialization(CuTest *tc) {
printf("%s\n", __func__);
MDB_val val;
PageInfo pi1 = {
.url = "test_url_123",
.first_crawl = 123,
.last_crawl = 456,
.n_changes = 100,
.n_crawls = 20,
.score = 0.7,
.content_hash_length = 8,
.content_hash = "1234567"
};
CuAssertTrue(tc, page_info_dump(&pi1, &val) == 0);
CuAssertDblEquals(tc, 0.7, page_info_dump_get_score(&val), 1e-6);
PageInfo *pi2 = page_info_load(&val);
CuAssertPtrNotNull(tc, pi2);
free(val.mv_data);
CuAssertStrEquals(tc, pi1.url, pi2->url);
CuAssertTrue(tc, pi1.first_crawl == pi2->first_crawl);
CuAssertTrue(tc, pi1.last_crawl == pi2->last_crawl);
CuAssertTrue(tc, pi1.n_changes == pi2->n_changes);
CuAssertTrue(tc, pi1.n_crawls == pi2->n_crawls);
CuAssertTrue(tc, pi1.score == pi2->score);
CuAssertTrue(tc, pi1.content_hash_length == pi2->content_hash_length);
CuAssertStrEquals(tc, pi1.content_hash, pi2->content_hash);
page_info_delete(pi2);
}
/* Tests all the database operations on a very simple crawl of just two pages */
void
test_page_db_simple(CuTest *tc) {
printf("%s\n", __func__);
char test_dir[] = "test-pagedb-XXXXXX";
mkdtemp(test_dir);
PageDB *db;
int ret = page_db_new(&db, test_dir);
CuAssert(tc,
db!=0? db->error->message: "NULL",
ret == 0);
db->persist = 0;
CrawledPage *cp1 = crawled_page_new("www.yahoo.com");
crawled_page_add_link(cp1, "a", 0.1);
crawled_page_add_link(cp1, "b", 0.2);
crawled_page_add_link(cp1, "www.google.com", 0.3);
crawled_page_set_hash64(cp1, 1000);
cp1->score = 0.5;
CrawledPage *cp2 = crawled_page_new("www.bing.com");
crawled_page_add_link(cp2, "x", 1.1);
crawled_page_add_link(cp2, "y", 1.2);
crawled_page_set_hash64(cp2, 2000);
cp2->score = 0.2;
PageInfoList *pil;
CuAssert(tc,
db->error->message,
page_db_add(db, cp1, &pil) == 0);
page_info_list_delete(pil);
CuAssert(tc,
db->error->message,
page_db_add(db, cp2, &pil) == 0);
page_info_list_delete(pil);
crawled_page_set_hash64(cp2, 3000);
CuAssert(tc,
db->error->message,
page_db_add(db, cp2, &pil) == 0);
page_info_list_delete(pil);
MMapArray *scores = 0;
CuAssert(tc,
db->error->message,
page_db_get_scores(db, &scores) == 0);
size_t idx;
CuAssert(tc,
db->error->message,
page_db_get_idx(db, page_db_hash("www.yahoo.com"), &idx) == 0);
CuAssertDblEquals(
tc,
0.5,
*(float*)mmap_array_idx(scores, idx),
1e-6);
CuAssert(tc,
db->error->message,
page_db_get_idx(db, page_db_hash("x"), &idx) == 0);
CuAssertDblEquals(
tc,
1.1,
*(float*)mmap_array_idx(scores, idx),
1e-6);
CHECK_DELETE(tc, scores->error->message, mmap_array_delete(scores));
crawled_page_delete(cp1);
crawled_page_delete(cp2);
char pi_out[1000];
char *print_pages[] = {"www.yahoo.com", "www.google.com", "www.bing.com"};
for (size_t i=0; i<3; ++i) {
PageInfo *pi;
CuAssert(tc,
db->error->message,
page_db_get_info(db, page_db_hash(print_pages[i]), &pi) == 0);
CuAssertPtrNotNull(tc, pi);
switch(i) {
case 0:
CuAssertIntEquals(tc, 1, pi->n_crawls);
CuAssertIntEquals(tc, 0, pi->n_changes);
break;
case 1:
CuAssertIntEquals(tc, 0, pi->n_crawls);
break;
case 2:
CuAssertIntEquals(tc, 2, pi->n_crawls);
CuAssertIntEquals(tc, 1, pi->n_changes);
break;
}
page_info_print(pi, pi_out);
page_info_delete(pi);
/* show on screen the page info:
*
* Mon Apr 6 15:34:50 2015|Mon Apr 6 15:34:50 2015|1.00e+00|0.00e+00|www.yahoo.com
* Thu Jan 1 01:00:00 1970|Thu Jan 1 01:00:00 1970|0.00e+00|0.00e+00|www.google.com
* Mon Apr 6 15:34:50 2015|Mon Apr 6 15:34:50 2015|2.00e+00|1.00e+00|www.bing.com
*/
#if 0
printf("%s\n", pi_out);
#endif
}
PageDBLinkStream *es;
CuAssert(tc,
db->error->message,
page_db_link_stream_new(&es, db) == 0);
es->only_diff_domain = 0;
if (es->state == stream_state_init) {
Link link;
int i=0;
while (page_db_link_stream_next(es, &link) == stream_state_next) {
switch(i++) {
case 0:
CuAssertIntEquals(tc, 0, link.from);
CuAssertIntEquals(tc, 1, link.to);
break;
case 1:
CuAssertIntEquals(tc, 0, link.from);
CuAssertIntEquals(tc, 2, link.to);
break;
case 2:
CuAssertIntEquals(tc, 0, link.from);
CuAssertIntEquals(tc, 3, link.to);
break;
case 3:
CuAssertIntEquals(tc, 4, link.from);
CuAssertIntEquals(tc, 5, link.to);
break;
case 4:
CuAssertIntEquals(tc, 4, link.from);
CuAssertIntEquals(tc, 6, link.to);
break;
default:
CuFail(tc, "too many links");
break;
}
}
CuAssertTrue(tc, es->state != stream_state_error);
}
page_db_link_stream_delete(es);
page_db_delete(db);
}
static void
test_page_db_crawl(CuTest *tc) {
printf("%s\n", __func__);
char test_dir[] = "test-pagedb-XXXXXX";
mkdtemp(test_dir);
PageDB *db;
int ret = page_db_new(&db, test_dir);
CuAssert(tc,
db!=0? db->error->message: "NULL",
ret == 0);
page_db_set_persist(db, 0);
page_db_set_domain_temp(db, 20, 60.0);
const size_t n_links = 10;
LinkInfo links[n_links + 1];
for (size_t j=0; j<=n_links; ++j) {
sprintf(links[j].url = malloc(100),
"http://test_domain_%zu.org/test_url_%zu", j%100, j);
links[j].score = j;
}
clock_t start = clock();
for (size_t i=1; i<=test_n_pages; ++i) {
if (i % 10000 == 0) {
double delta = (double)(clock() - start)/(double)CLOCKS_PER_SEC;
if (delta > 0) {
printf("%10zuK/%zuK: %.0f pages/sec\n",
i/1000, test_n_pages/1000, ((double)i)/delta);
}
}
free(links[0].url);
for (size_t j=0; j<n_links; ++j)
links[j] = links[j+1];
sprintf(links[n_links].url = malloc(50), "test_url_%zu", i + n_links);
links[n_links].score = i;
CrawledPage *cp = crawled_page_new(links[0].url);
for (size_t j=1; j<=n_links; ++j)
crawled_page_add_link(cp, links[j].url, 0.5);
PageInfoList *pil;
CuAssert(tc,
db->error->message,
page_db_add(db, cp, &pil) == 0);
page_info_list_delete(pil);
crawled_page_delete(cp);
}
for (size_t j=0; j<=n_links; ++j)
free(links[j].url);
PageDBLinkStream *st;
CuAssert(tc,
db->error->message,
page_db_link_stream_new(&st, db) == 0);
st->only_diff_domain = 0;
Hits *hits;
ret = hits_new(&hits, test_dir, test_n_pages);
CuAssert(tc,
hits!=0? hits->error->message: "NULL",
ret == 0);
hits->precision = 1e-3;
HitsError hits_err = hits_compute(hits,
st,
page_db_link_stream_next,
page_db_link_stream_reset);
if (hits_err == hits_error_precision)
hits_err = 0;
CuAssert(tc, hits->error->message, hits_err == 0);
CHECK_DELETE(tc, hits->error->message, hits_delete(hits));
page_db_link_stream_delete(st);
page_db_delete(db);
}
void CIdXmlUtility::Close()
{
CHECK_DELETE(m_domParser);
m_bDomExists = false;
}
/* Checks the accuracy of the PageRank computation */
void
test_page_rank(CuTest *tc) {
printf("%s\n", __func__);
/* Compute the PageRank score of the following graph
* +-->2---+
* | | |
* | v v
* 1-->5<--3
* ^ ^ |
* | | |
* +---4<--+
*
* The link matrix L[i,j], where L[i,j] = 1 means 'i' links to 'j' is:
*
* +- -+
* | 0 1 0 0 1 |
* | 0 0 1 0 1 |
* L = | 0 0 0 1 1 |
* | 1 0 0 0 1 |
* | 0 0 0 0 0 |
* +- -+
*
* Since page "5" has no outbound links, it is assumed it links to every other page:
*
* +- -+
* | 0 1 0 0 1 |
* | 0 0 1 0 1 |
* L = | 0 0 0 1 1 |
* | 1 0 0 0 1 |
* | 1 1 1 1 1 |
* +- -+
*
* The out degree is:
*
* deg = {2, 2, 2, 2, 5}
*
* Dividing each row with the out degree and transposing we get the matrix:
*
* M[i, j] = L[j, i]/deg[j]
*
* we get:
*
* +- -+
* | 0 0 0 0.5 0.2 |
* | 0.5 0 0 0 0.2 |
* M = | 0 0.5 0 0 0.2 |
* | 0 0 0.5 0 0.2 |
* | 0.5 0.5 0.5 0.5 0.2 |
* +- -+
*
* If 'd' is the damping then the PageRank 'PR' is:
*
* 1 - d
* PR = ----- + (d * M)*PR
* N
*
* For d=0.85 the numerical solution is:
*
* PR(1) = PR(2) = PR(3) = PR(4) = 0.15936255
* PR(5) = 0.3625498
*/
char test_dir[] = "test-pagedb-XXXXXX";
mkdtemp(test_dir);
PageDB *db;
int ret = page_db_new(&db, test_dir);
CuAssert(tc,
db!=0? db->error->message: "NULL",
ret == 0);
db->persist = 0;
char *urls[5] = {"1", "2", "3", "4", "5" };
LinkInfo links_1[] = {{"2", 0.1}, {"5", 0.1}};
LinkInfo links_2[] = {{"3", 0.1}, {"5", 0.1}};
LinkInfo links_3[] = {{"4", 0.1}, {"5", 0.1}};
LinkInfo links_4[] = {{"1", 0.1}, {"5", 0.1}};
LinkInfo *links[5] = {
links_1, links_2, links_3, links_4, 0
};
int n_links[5] = {2, 2, 2, 2, 0};
for (int i=0; i<5; ++i) {
CrawledPage *cp = crawled_page_new(urls[i]);
for (int j=0; j<n_links[i]; ++j)
crawled_page_add_link(cp, links[i][j].url, links[i][j].score);
cp->score = i/5.0;
crawled_page_set_hash64(cp, i);
PageInfoList *pil;
CuAssert(tc,
db->error->message,
page_db_add(db, cp, &pil) == 0);
page_info_list_delete(pil);
crawled_page_delete(cp);
}
// Without content scores
// ------------------------------------------------------------------------
PageDBLinkStream *st;
CuAssert(tc,
db->error->message,
page_db_link_stream_new(&st, db) == 0);
st->only_diff_domain = 0;
PageRank *pr;
ret = page_rank_new(&pr, test_dir, 5);
CuAssert(tc,
pr!=0? pr->error->message: "NULL",
ret == 0);
pr->precision = 1e-6;
CuAssert(tc,
pr->error->message,
page_rank_compute(pr,
st,
page_db_link_stream_next,
page_db_link_stream_reset) == 0);
page_db_link_stream_delete(st);
uint64_t idx;
float *score;
float scores[5] = {0.15936255, 0.15936255, 0.15936255, 0.15936255, 0.3625498};
for (int i=0; i<5; ++i) {
CuAssert(tc,
db->error->message,
page_db_get_idx(db, page_db_hash(urls[i]), &idx) == 0);
CuAssertPtrNotNull(tc,
score = mmap_array_idx(pr->value1, idx));
CuAssertDblEquals(tc, scores[i], *score, 1e-6);
}
CHECK_DELETE(tc, pr->error->message, page_rank_delete(pr));
// With content scores, damping = 0
// ------------------------------------------------------------------------
CuAssert(tc,
db->error->message,
page_db_link_stream_new(&st, db) == 0);
st->only_diff_domain = 0;
ret = page_rank_new(&pr, test_dir, 5);
CuAssert(tc,
pr!=0? pr->error->message: "NULL",
ret == 0);
pr->precision = 1e-6;
pr->damping = 0.0;
CuAssert(tc,
db->error->message,
page_db_get_scores(db, &pr->scores) == 0);
CuAssert(tc,
pr->error->message,
page_rank_compute(pr,
st,
page_db_link_stream_next,
page_db_link_stream_reset) == 0);
page_db_link_stream_delete(st);
float total_score = 0.0;
for (int i=0; i<5; ++i)
total_score += scores[i] = *((float*)mmap_array_idx(pr->scores, i));
for (int i=0; i<5; ++i) {
CuAssert(tc,
db->error->message,
page_db_get_idx(db, page_db_hash(urls[i]), &idx) == 0);
CuAssertPtrNotNull(tc,
score = mmap_array_idx(pr->value1, idx));
CuAssertDblEquals(tc, scores[idx]/total_score, *score, 1e-6);
}
CHECK_DELETE(tc, pr->scores->error->message, mmap_array_delete(pr->scores));
CHECK_DELETE(tc, pr->error->message, page_rank_delete(pr));
// With content scores, damping = 0.5
// ------------------------------------------------------------------------
CuAssert(tc,
db->error->message,
page_db_link_stream_new(&st, db) == 0);
st->only_diff_domain = 0;
ret = page_rank_new(&pr, test_dir, 5);
CuAssert(tc,
pr!=0? pr->error->message: "NULL",
ret == 0);
pr->precision = 1e-6;
pr->damping = 0.5;
CuAssert(tc,
db->error->message,
page_db_get_scores(db, &pr->scores) == 0);
CuAssert(tc,
pr->error->message,
page_rank_compute(pr,
st,
page_db_link_stream_next,
page_db_link_stream_reset) == 0);
page_db_link_stream_delete(st);
float expected_pr[] = {
0.06386554621848739,
0.08739495798319329,
0.1647058823529412,
0.25546218487394956,
0.4285714285714286
};
for (int i=0; i<5; ++i) {
CuAssert(tc,
db->error->message,
page_db_get_idx(db, page_db_hash(urls[i]), &idx) == 0);
CuAssertPtrNotNull(tc,
score = mmap_array_idx(pr->value1, idx));
CuAssertDblEquals(tc, expected_pr[i], *score, 1e-6);
}
CHECK_DELETE(tc, pr->scores->error->message, mmap_array_delete(pr->scores));
CHECK_DELETE(tc, pr->error->message, page_rank_delete(pr));
page_db_delete(db);
}
static int PyLWPR_S_final_lambda(PyLWPR *self, PyObject *value, void *closure) {
CHECK_DELETE(value,"final_lambda");
CHECK_GET_SCALAR(value,"final_lambda",self->model.final_lambda);
return 0;
}
static int PyLWPR_S_add_threshold(PyLWPR *self, PyObject *value, void *closure) {
CHECK_DELETE(value,"add_threshold");
CHECK_GET_SCALAR(value,"add_threshold",self->model.add_threshold);
return 0;
}
static int PyLWPR_S_penalty(PyLWPR *self, PyObject *value, void *closure) {
CHECK_DELETE(value,"penalty");
CHECK_GET_SCALAR(value,"penalty",self->model.penalty);
return 0;
}
static int PyLWPR_S_init_S2(PyLWPR *self, PyObject *value, void *closure) {
CHECK_DELETE(value,"init_S2");
CHECK_GET_SCALAR(value,"init_S2",self->model.init_S2);
return 0;
}
static int PyLWPR_S_meta_rate(PyLWPR *self, PyObject *value, void *closure) {
CHECK_DELETE(value,"meta_rate");
CHECK_GET_SCALAR(value,"meta_rate",self->model.meta_rate);
return 0;
}
static int PyLWPR_S_w_gen(PyLWPR *self, PyObject *value, void *closure) {
CHECK_DELETE(value,"w_gen");
CHECK_GET_SCALAR(value,"w_gen",self->model.w_gen);
return 0;
}
static int PyLWPR_S_update_D(PyLWPR *self, PyObject *value, void *closure) {
CHECK_DELETE(value,"update_D");
CHECK_BOOL(value,"update_D");
self->model.update_D = (value == Py_True) ? 1 : 0;
return 0;
}
static int PyLWPR_S_diag_only(PyLWPR *self, PyObject *value, void *closure) {
CHECK_DELETE(value,"diag_only");
CHECK_BOOL(value,"diag_only");
self->model.diag_only = (value == Py_True) ? 1 : 0;
return 0;
}
static int PyLWPR_S_meta(PyLWPR *self, PyObject *value, void *closure) {
CHECK_DELETE(value,"meta");
CHECK_BOOL(value,"meta");
self->model.meta = (value == Py_True) ? 1 : 0;
return 0;
}