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authorMorgan Richomme <morgan.richomme@orange.com>2016-01-26 17:10:25 +0000
committerGerrit Code Review <gerrit@172.30.200.206>2016-01-26 17:10:25 +0000
commitc277f40e639c40c00a62bb84eda18dd0b8f7797e (patch)
tree6bb8ab98944c122558f1405b0735548eca88e5a7 /testcases/vPing/CI
parent7e6dc039febd23ce7a4b2a27e5b8477ebf4d0a91 (diff)
parenta43fac229e1be8c6af2c72a4be9d9c1c95614d21 (diff)
Merge "Add timeout in paramiko ssh command"
Diffstat (limited to 'testcases/vPing/CI')
-rw-r--r--testcases/vPing/CI/libraries/vPing2.py12
1 files changed, 6 insertions, 6 deletions
diff --git a/testcases/vPing/CI/libraries/vPing2.py b/testcases/vPing/CI/libraries/vPing2.py
index 358223585..912627b76 100644
--- a/testcases/vPing/CI/libraries/vPing2.py
+++ b/testcases/vPing/CI/libraries/vPing2.py
@@ -443,26 +443,26 @@ def main():
port_id1, port_id2)
return (EXIT_CODE)
- logger.info("Trying to stablish SSH connection to %s..." % floatip)
+ logger.info("Trying to establish SSH connection to %s..." % floatip)
username='cirros'
password='cubswin:)'
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
- timeout = 50
+ timeout = 20
while timeout > 0:
try:
- ssh.connect(floatip, username=username, password=password)
- logger.debug("Floating IP '%s' is ssh-able!" % floatip)
+ ssh.connect(floatip, username=username, password=password, timeout=10)
+ logger.debug("SSH connection established to %s." % floatip)
break
except Exception, e:
#print e
logger.debug("Waiting for %s..." % floatip)
- time.sleep(6)
+ time.sleep(2)
timeout -= 1
if timeout == 0: # 300 sec timeout (5 min)
- logger.error("Cannot ping the floating IP '%s'." % floatip)
+ logger.error("Cannot establish connection to IP '%s'. Aborting" % floatip)
cleanup(nova_client, neutron_client, image_id, network_dic,
port_id1, port_id2)
return (EXIT_CODE)
66' href='#n266'>266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 
/*
 * Simple trace backend
 *
 * Copyright IBM, Corp. 2010
 *
 * This work is licensed under the terms of the GNU GPL, version 2.  See
 * the COPYING file in the top-level directory.
 *
 */

#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <time.h>
#ifndef _WIN32
#include <signal.h>
#include <pthread.h>
#endif
#include "qemu/timer.h"
#include "trace.h"
#include "trace/control.h"
#include "trace/simple.h"

/** Trace file header event ID */
#define HEADER_EVENT_ID (~(uint64_t)0) /* avoids conflicting with TraceEventIDs */

/** Trace file magic number */
#define HEADER_MAGIC 0xf2b177cb0aa429b4ULL

/** Trace file version number, bump if format changes */
#define HEADER_VERSION 3

/** Records were dropped event ID */
#define DROPPED_EVENT_ID (~(uint64_t)0 - 1)

/** Trace record is valid */
#define TRACE_RECORD_VALID ((uint64_t)1 << 63)

/*
 * Trace records are written out by a dedicated thread.  The thread waits for
 * records to become available, writes them out, and then waits again.
 */
static CompatGMutex trace_lock;
static CompatGCond trace_available_cond;
static CompatGCond trace_empty_cond;

static bool trace_available;
static bool trace_writeout_enabled;

enum {
    TRACE_BUF_LEN = 4096 * 64,
    TRACE_BUF_FLUSH_THRESHOLD = TRACE_BUF_LEN / 4,
};

uint8_t trace_buf[TRACE_BUF_LEN];
static volatile gint trace_idx;
static unsigned int writeout_idx;
static volatile gint dropped_events;
static uint32_t trace_pid;
static FILE *trace_fp;
static char *trace_file_name;

/* * Trace buffer entry */
typedef struct {
    uint64_t event; /*   TraceEventID */
    uint64_t timestamp_ns;
    uint32_t length;   /*    in bytes */
    uint32_t pid;
    uint64_t arguments[];
} TraceRecord;

typedef struct {
    uint64_t header_event_id; /* HEADER_EVENT_ID */
    uint64_t header_magic;    /* HEADER_MAGIC    */
    uint64_t header_version;  /* HEADER_VERSION  */
} TraceLogHeader;


static void read_from_buffer(unsigned int idx, void *dataptr, size_t size);
static unsigned int write_to_buffer(unsigned int idx, void *dataptr, size_t size);

static void clear_buffer_range(unsigned int idx, size_t len)
{
    uint32_t num = 0;
    while (num < len) {
        if (idx >= TRACE_BUF_LEN) {
            idx = idx % TRACE_BUF_LEN;
        }
        trace_buf[idx++] = 0;
        num++;
    }
}
/**
 * Read a trace record from the trace buffer
 *
 * @idx         Trace buffer index
 * @record      Trace record to fill
 *
 * Returns false if the record is not valid.
 */
static bool get_trace_record(unsigned int idx, TraceRecord **recordptr)
{
    uint64_t event_flag = 0;
    TraceRecord record;
    /* read the event flag to see if its a valid record */
    read_from_buffer(idx, &record, sizeof(event_flag));

    if (!(record.event & TRACE_RECORD_VALID)) {
        return false;
    }

    smp_rmb(); /* read memory barrier before accessing record */
    /* read the record header to know record length */
    read_from_buffer(idx, &record, sizeof(TraceRecord));
    *recordptr = malloc(record.length); /* dont use g_malloc, can deadlock when traced */
    /* make a copy of record to avoid being overwritten */
    read_from_buffer(idx, *recordptr, record.length);
    smp_rmb(); /* memory barrier before clearing valid flag */
    (*recordptr)->event &= ~TRACE_RECORD_VALID;
    /* clear the trace buffer range for consumed record otherwise any byte
     * with its MSB set may be considered as a valid event id when the writer
     * thread crosses this range of buffer again.
     */
    clear_buffer_range(idx, record.length);
    return true;
}

/**
 * Kick writeout thread
 *
 * @wait        Whether to wait for writeout thread to complete
 */
static void flush_trace_file(bool wait)
{
    g_mutex_lock(&trace_lock);
    trace_available = true;
    g_cond_signal(&trace_available_cond);

    if (wait) {
        g_cond_wait(&trace_empty_cond, &trace_lock);
    }

    g_mutex_unlock(&trace_lock);
}

static void wait_for_trace_records_available(void)
{
    g_mutex_lock(&trace_lock);
    while (!(trace_available && trace_writeout_enabled)) {
        g_cond_signal(&trace_empty_cond);
        g_cond_wait(&trace_available_cond, &trace_lock);
    }
    trace_available = false;
    g_mutex_unlock(&trace_lock);
}

static gpointer writeout_thread(gpointer opaque)
{
    TraceRecord *recordptr;
    union {
        TraceRecord rec;
        uint8_t bytes[sizeof(TraceRecord) + sizeof(uint64_t)];
    } dropped;
    unsigned int idx = 0;
    int dropped_count;
    size_t unused __attribute__ ((unused));

    for (;;) {
        wait_for_trace_records_available();

        if (g_atomic_int_get(&dropped_events)) {
            dropped.rec.event = DROPPED_EVENT_ID,
            dropped.rec.timestamp_ns = get_clock();
            dropped.rec.length = sizeof(TraceRecord) + sizeof(uint64_t),
            dropped.rec.pid = trace_pid;
            do {
                dropped_count = g_atomic_int_get(&dropped_events);
            } while (!g_atomic_int_compare_and_exchange(&dropped_events,
                                                        dropped_count, 0));
            dropped.rec.arguments[0] = dropped_count;
            unused = fwrite(&dropped.rec, dropped.rec.length, 1, trace_fp);
        }

        while (get_trace_record(idx, &recordptr)) {
            unused = fwrite(recordptr, recordptr->length, 1, trace_fp);
            writeout_idx += recordptr->length;
            free(recordptr); /* dont use g_free, can deadlock when traced */
            idx = writeout_idx % TRACE_BUF_LEN;
        }

        fflush(trace_fp);
    }
    return NULL;
}

void trace_record_write_u64(TraceBufferRecord *rec, uint64_t val)
{
    rec->rec_off = write_to_buffer(rec->rec_off, &val, sizeof(uint64_t));
}

void trace_record_write_str(TraceBufferRecord *rec, const char *s, uint32_t slen)
{
    /* Write string length first */
    rec->rec_off = write_to_buffer(rec->rec_off, &slen, sizeof(slen));
    /* Write actual string now */
    rec->rec_off = write_to_buffer(rec->rec_off, (void*)s, slen);
}

int trace_record_start(TraceBufferRecord *rec, TraceEventID event, size_t datasize)
{
    unsigned int idx, rec_off, old_idx, new_idx;
    uint32_t rec_len = sizeof(TraceRecord) + datasize;
    uint64_t event_u64 = event;
    uint64_t timestamp_ns = get_clock();

    do {
        old_idx = g_atomic_int_get(&trace_idx);
        smp_rmb();
        new_idx = old_idx + rec_len;

        if (new_idx - writeout_idx > TRACE_BUF_LEN) {
            /* Trace Buffer Full, Event dropped ! */
            g_atomic_int_inc(&dropped_events);
            return -ENOSPC;
        }
    } while (!g_atomic_int_compare_and_exchange(&trace_idx, old_idx, new_idx));

    idx = old_idx % TRACE_BUF_LEN;

    rec_off = idx;
    rec_off = write_to_buffer(rec_off, &event_u64, sizeof(event_u64));
    rec_off = write_to_buffer(rec_off, &timestamp_ns, sizeof(timestamp_ns));
    rec_off = write_to_buffer(rec_off, &rec_len, sizeof(rec_len));
    rec_off = write_to_buffer(rec_off, &trace_pid, sizeof(trace_pid));

    rec->tbuf_idx = idx;
    rec->rec_off  = (idx + sizeof(TraceRecord)) % TRACE_BUF_LEN;
    return 0;
}

static void read_from_buffer(unsigned int idx, void *dataptr, size_t size)
{
    uint8_t *data_ptr = dataptr;
    uint32_t x = 0;
    while (x < size) {
        if (idx >= TRACE_BUF_LEN) {
            idx = idx % TRACE_BUF_LEN;
        }
        data_ptr[x++] = trace_buf[idx++];
    }
}

static unsigned int write_to_buffer(unsigned int idx, void *dataptr, size_t size)
{
    uint8_t *data_ptr = dataptr;
    uint32_t x = 0;
    while (x < size) {
        if (idx >= TRACE_BUF_LEN) {
            idx = idx % TRACE_BUF_LEN;
        }
        trace_buf[idx++] = data_ptr[x++];
    }
    return idx; /* most callers wants to know where to write next */
}

void trace_record_finish(TraceBufferRecord *rec)
{
    TraceRecord record;
    read_from_buffer(rec->tbuf_idx, &record, sizeof(TraceRecord));
    smp_wmb(); /* write barrier before marking as valid */
    record.event |= TRACE_RECORD_VALID;
    write_to_buffer(rec->tbuf_idx, &record, sizeof(TraceRecord));

    if (((unsigned int)g_atomic_int_get(&trace_idx) - writeout_idx)
        > TRACE_BUF_FLUSH_THRESHOLD) {
        flush_trace_file(false);
    }
}

void st_set_trace_file_enabled(bool enable)
{
    if (enable == !!trace_fp) {
        return; /* no change */
    }

    /* Halt trace writeout */
    flush_trace_file(true);
    trace_writeout_enabled = false;
    flush_trace_file(true);

    if (enable) {
        static const TraceLogHeader header = {
            .header_event_id = HEADER_EVENT_ID,
            .header_magic = HEADER_MAGIC,
            /* Older log readers will check for version at next location */
            .header_version = HEADER_VERSION,
        };

        trace_fp = fopen(trace_file_name, "wb");
        if (!trace_fp) {
            return;
        }

        if (fwrite(&header, sizeof header, 1, trace_fp) != 1) {
            fclose(trace_fp);
            trace_fp = NULL;
            return;
        }

        /* Resume trace writeout */
        trace_writeout_enabled = true;
        flush_trace_file(false);
    } else {
        fclose(trace_fp);
        trace_fp = NULL;
    }
}

/**
 * Set the name of a trace file
 *
 * @file        The trace file name or NULL for the default name-<pid> set at
 *              config time
 */
bool st_set_trace_file(const char *file)
{
    st_set_trace_file_enabled(false);

    g_free(trace_file_name);

    if (!file) {
        trace_file_name = g_strdup_printf(CONFIG_TRACE_FILE, getpid());
    } else {
        trace_file_name = g_strdup_printf("%s", file);
    }

    st_set_trace_file_enabled(true);
    return true;
}

void st_print_trace_file_status(FILE *stream, int (*stream_printf)(FILE *stream, const char *fmt, ...))
{
    stream_printf(stream, "Trace file \"%s\" %s.\n",
                  trace_file_name, trace_fp ? "on" : "off");
}

void st_flush_trace_buffer(void)
{
    flush_trace_file(true);
}

/* Helper function to create a thread with signals blocked.  Use glib's
 * portable threads since QEMU abstractions cannot be used due to reentrancy in
 * the tracer.  Also note the signal masking on POSIX hosts so that the thread
 * does not steal signals when the rest of the program wants them blocked.
 */
static GThread *trace_thread_create(GThreadFunc fn)
{
    GThread *thread;
#ifndef _WIN32
    sigset_t set, oldset;

    sigfillset(&set);
    pthread_sigmask(SIG_SETMASK, &set, &oldset);
#endif

    thread = g_thread_new("trace-thread", fn, NULL);

#ifndef _WIN32
    pthread_sigmask(SIG_SETMASK, &oldset, NULL);
#endif

    return thread;
}

bool st_init(const char *file)
{
    GThread *thread;

    trace_pid = getpid();

    thread = trace_thread_create(writeout_thread);
    if (!thread) {
        fprintf(stderr, "warning: unable to initialize simple trace backend\n");
        return false;
    }

    atexit(st_flush_trace_buffer);
    st_set_trace_file(file);
    return true;
}