X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fapache.c;h=f0ab22a80047e9e3e3d367348aa556f614b0fc51;hb=9f6f901889d4c9f594b5ae1fd0f449fcdd2d8fe3;hp=9cec8fd3149876428882dbcd8e1c919e21867863;hpb=64652a262f34e030ec733ffb90959f4d44562895;p=collectd.git diff --git a/src/apache.c b/src/apache.c index 9cec8fd3..f0ab22a8 100644 --- a/src/apache.c +++ b/src/apache.c @@ -1,6 +1,6 @@ /** * collectd - src/apache.c - * Copyright (C) 2006-2009 Florian octo Forster + * Copyright (C) 2006-2010 Florian octo Forster * Copyright (C) 2007 Florent EppO Monbillard * Copyright (C) 2009 Amit Gupta * @@ -31,8 +31,15 @@ #include +enum server_enum +{ + APACHE = 0, + LIGHTTPD +}; + struct apache_s { + int server_type; char *name; char *host; char *url; @@ -41,6 +48,7 @@ struct apache_s int verify_peer; int verify_host; char *cacert; + char *server; /* user specific server type */ char *apache_buffer; char apache_curl_error[CURL_ERROR_SIZE]; size_t apache_buffer_size; @@ -64,6 +72,7 @@ static void apache_free (apache_t *st) sfree (st->user); sfree (st->pass); sfree (st->cacert); + sfree (st->server); sfree (st->apache_buffer); if (st->curl) { curl_easy_cleanup(st->curl); @@ -110,6 +119,44 @@ static size_t apache_curl_callback (void *buf, size_t size, size_t nmemb, return (len); } /* int apache_curl_callback */ +static size_t apache_header_callback (void *buf, size_t size, size_t nmemb, + void *user_data) +{ + size_t len = size * nmemb; + apache_t *st; + + st = user_data; + if (st == NULL) + { + ERROR ("apache plugin: apache_header_callback: " + "user_data pointer is NULL."); + return (0); + } + + if (len <= 0) + return (len); + + /* look for the Server header */ + if (strncasecmp (buf, "Server: ", strlen ("Server: ")) != 0) + return (len); + + if (strstr (buf, "Apache") != NULL) + st->server_type = APACHE; + else if (strstr (buf, "lighttpd") != NULL) + st->server_type = LIGHTTPD; + else if (strstr (buf, "IBM_HTTP_Server") != NULL) + st->server_type = APACHE; + else + { + const char *hdr = buf; + + hdr += strlen ("Server: "); + NOTICE ("apache plugin: Unknown server software: %s", hdr); + } + + return (len); +} /* apache_header_callback */ + /* Configuration handling functiions * * @@ -157,7 +204,7 @@ static int config_set_boolean (int *ret_boolean, /* {{{ */ return (-1); } - if (ci->values[0].type != OCONFIG_TYPE_BOOLEAN) + if (ci->values[0].type == OCONFIG_TYPE_BOOLEAN) { if (ci->values[0].value.boolean) *ret_boolean = 1; @@ -167,13 +214,9 @@ static int config_set_boolean (int *ret_boolean, /* {{{ */ else /* if (ci->values[0].type != OCONFIG_TYPE_STRING) */ { char *string = ci->values[0].value.string; - if ((strcasecmp ("true", string) == 0) - || (strcasecmp ("yes", string) == 0) - || (strcasecmp ("on", string) == 0)) + if (IS_TRUE (string)) *ret_boolean = 1; - else if ((strcasecmp ("false", string) == 0) - || (strcasecmp ("no", string) == 0) - || (strcasecmp ("off", string) == 0)) + else if (IS_FALSE (string)) *ret_boolean = 0; else { @@ -235,6 +278,8 @@ static int config_add (oconfig_item_t *ci) status = config_set_boolean (&st->verify_host, child); else if (strcasecmp ("CACert", child->key) == 0) status = config_set_string (&st->cacert, child); + else if (strcasecmp ("Server", child->key) == 0) + status = config_set_string (&st->server, child); else { WARNING ("apache plugin: Option `%s' not allowed here.", @@ -246,6 +291,15 @@ static int config_add (oconfig_item_t *ci) break; } + /* Check if struct is complete.. */ + if ((status == 0) && (st->url == NULL)) + { + ERROR ("apache plugin: Instance `%s': " + "No URL has been configured.", + st->name); + status = -1; + } + if (status == 0) { user_data_t ud; @@ -261,7 +315,8 @@ static int config_add (oconfig_item_t *ci) (st->host != NULL) ? st->host : hostname_g, (st->name != NULL) ? st->name : "default"), - status = plugin_register_complex_read (callback_name, + status = plugin_register_complex_read (/* group = */ NULL, + /* name = */ callback_name, /* callback = */ apache_read_host, /* interval = */ NULL, /* user_data = */ &ud); @@ -280,57 +335,22 @@ static int config (oconfig_item_t *ci) { int status = 0; int i; - oconfig_item_t *lci = NULL; /* legacy config */ for (i = 0; i < ci->children_num; i++) { oconfig_item_t *child = ci->children + i; - if (strcasecmp ("Instance", child->key) == 0 && child->children_num > 0) + if (strcasecmp ("Instance", child->key) == 0) config_add (child); else - { - /* legacy mode - convert to config */ - if (lci == NULL) - { - lci = malloc (sizeof(*lci)); - if (lci == NULL) - { - ERROR ("apache plugin: malloc failed."); - return (-1); - } - memset (lci, '\0', sizeof (*lci)); - } - - lci->children_num++; - lci->children = - realloc (lci->children, - lci->children_num * sizeof (*child)); - if (lci->children == NULL) - { - ERROR ("apache plugin: realloc failed."); - return (-1); - } - memcpy (&lci->children[lci->children_num-1], child, sizeof (*child)); - } + WARNING ("apache plugin: The configuration option " + "\"%s\" is not allowed here. Did you " + "forget to add an block " + "around the configuration?", + child->key); } /* for (ci->children) */ - if (lci) - { - /* create a entry */ - lci->key = "Instance"; - lci->values_num = 1; - lci->values = (oconfig_value_t *) malloc (lci->values_num * sizeof (oconfig_value_t)); - lci->values[0].type = OCONFIG_TYPE_STRING; - lci->values[0].value.string = ""; - - status = config_add (lci); - sfree (lci->values); - sfree (lci->children); - sfree (lci); - } - - return status; + return (status); } /* int config */ /* initialize curl for each host */ @@ -338,16 +358,13 @@ static int init_host (apache_t *st) /* {{{ */ { static char credentials[1024]; - if (st->url == NULL) - { - WARNING ("apache plugin: init_host: No URL configured, returning " - "an error."); - return (-1); - } + assert (st->url != NULL); + /* (Assured by `config_add') */ if (st->curl != NULL) { curl_easy_cleanup (st->curl); + st->curl = NULL; } if ((st->curl = curl_easy_init ()) == NULL) @@ -356,8 +373,35 @@ static int init_host (apache_t *st) /* {{{ */ return (-1); } + curl_easy_setopt (st->curl, CURLOPT_NOSIGNAL, 1L); curl_easy_setopt (st->curl, CURLOPT_WRITEFUNCTION, apache_curl_callback); curl_easy_setopt (st->curl, CURLOPT_WRITEDATA, st); + + /* not set as yet if the user specified string doesn't match apache or + * lighttpd, then ignore it. Headers will be parsed to find out the + * server type */ + st->server_type = -1; + + if (st->server != NULL) + { + if (strcasecmp(st->server, "apache") == 0) + st->server_type = APACHE; + else if (strcasecmp(st->server, "lighttpd") == 0) + st->server_type = LIGHTTPD; + else if (strcasecmp(st->server, "ibm_http_server") == 0) + st->server_type = APACHE; + else + WARNING ("apache plugin: Unknown `Server' setting: %s", + st->server); + } + + /* if not found register a header callback to determine the server_type */ + if (st->server_type == -1) + { + curl_easy_setopt (st->curl, CURLOPT_HEADERFUNCTION, apache_header_callback); + curl_easy_setopt (st->curl, CURLOPT_WRITEHEADER, st); + } + curl_easy_setopt (st->curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION); curl_easy_setopt (st->curl, CURLOPT_ERRORBUFFER, st->apache_curl_error); @@ -381,23 +425,25 @@ static int init_host (apache_t *st) /* {{{ */ } curl_easy_setopt (st->curl, CURLOPT_URL, st->url); + curl_easy_setopt (st->curl, CURLOPT_FOLLOWLOCATION, 1L); + curl_easy_setopt (st->curl, CURLOPT_MAXREDIRS, 50L); if (st->verify_peer != 0) { - curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYPEER, 1); + curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYPEER, 1L); } else { - curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYPEER, 0); + curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYPEER, 0L); } if (st->verify_host != 0) { - curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYHOST, 2); + curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYHOST, 2L); } else { - curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYHOST, 0); + curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYHOST, 0L); } if (st->cacert != NULL) @@ -432,13 +478,13 @@ static void submit_value (const char *type, const char *type_instance, plugin_dispatch_values (&vl); } /* void submit_value */ -static void submit_counter (const char *type, const char *type_instance, - counter_t c, apache_t *st) +static void submit_derive (const char *type, const char *type_instance, + derive_t c, apache_t *st) { value_t v; - v.counter = c; + v.derive = c; submit_value (type, type_instance, v, st); -} /* void submit_counter */ +} /* void submit_derive */ static void submit_gauge (const char *type, const char *type_instance, gauge_t g, apache_t *st) @@ -452,10 +498,15 @@ static void submit_scoreboard (char *buf, apache_t *st) { /* * Scoreboard Key: - * "_" Waiting for Connection, "S" Starting up, "R" Reading Request, + * "_" Waiting for Connection, "S" Starting up, + * "R" Reading Request for apache and read-POST for lighttpd, * "W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup, * "C" Closing connection, "L" Logging, "G" Gracefully finishing, * "I" Idle cleanup of worker, "." Open slot with no current process + * Lighttpd specific legends - + * "E" hard error, "." connect, "h" handle-request, + * "q" request-start, "Q" request-end, "s" response-start + * "S" response-end, "r" read */ long long open = 0LL; long long waiting = 0LL; @@ -469,8 +520,16 @@ static void submit_scoreboard (char *buf, apache_t *st) long long finishing = 0LL; long long idle_cleanup = 0LL; - int i; + /* lighttpd specific */ + long long hard_error = 0LL; + long long lighttpd_read = 0LL; + long long handle_request = 0LL; + long long request_start = 0LL; + long long request_end = 0LL; + long long response_start = 0LL; + long long response_end = 0LL; + int i; for (i = 0; buf[i] != '\0'; i++) { if (buf[i] == '.') open++; @@ -484,19 +543,43 @@ static void submit_scoreboard (char *buf, apache_t *st) else if (buf[i] == 'L') logging++; else if (buf[i] == 'G') finishing++; else if (buf[i] == 'I') idle_cleanup++; + else if (buf[i] == 'r') lighttpd_read++; + else if (buf[i] == 'h') handle_request++; + else if (buf[i] == 'E') hard_error++; + else if (buf[i] == 'q') request_start++; + else if (buf[i] == 'Q') request_end++; + else if (buf[i] == 's') response_start++; + else if (buf[i] == 'S') response_end++; } - submit_gauge ("apache_scoreboard", "open" , open, st); - submit_gauge ("apache_scoreboard", "waiting" , waiting, st); - submit_gauge ("apache_scoreboard", "starting" , starting, st); - submit_gauge ("apache_scoreboard", "reading" , reading, st); - submit_gauge ("apache_scoreboard", "sending" , sending, st); - submit_gauge ("apache_scoreboard", "keepalive", keepalive, st); - submit_gauge ("apache_scoreboard", "dnslookup", dnslookup, st); - submit_gauge ("apache_scoreboard", "closing" , closing, st); - submit_gauge ("apache_scoreboard", "logging" , logging, st); - submit_gauge ("apache_scoreboard", "finishing", finishing, st); - submit_gauge ("apache_scoreboard", "idle_cleanup", idle_cleanup, st); + if (st->server_type == APACHE) + { + submit_gauge ("apache_scoreboard", "open" , open, st); + submit_gauge ("apache_scoreboard", "waiting" , waiting, st); + submit_gauge ("apache_scoreboard", "starting" , starting, st); + submit_gauge ("apache_scoreboard", "reading" , reading, st); + submit_gauge ("apache_scoreboard", "sending" , sending, st); + submit_gauge ("apache_scoreboard", "keepalive", keepalive, st); + submit_gauge ("apache_scoreboard", "dnslookup", dnslookup, st); + submit_gauge ("apache_scoreboard", "closing" , closing, st); + submit_gauge ("apache_scoreboard", "logging" , logging, st); + submit_gauge ("apache_scoreboard", "finishing", finishing, st); + submit_gauge ("apache_scoreboard", "idle_cleanup", idle_cleanup, st); + } + else + { + submit_gauge ("apache_scoreboard", "connect" , open, st); + submit_gauge ("apache_scoreboard", "close" , closing, st); + submit_gauge ("apache_scoreboard", "hard_error" , hard_error, st); + submit_gauge ("apache_scoreboard", "read" , lighttpd_read, st); + submit_gauge ("apache_scoreboard", "read_post" , reading, st); + submit_gauge ("apache_scoreboard", "write" , sending, st); + submit_gauge ("apache_scoreboard", "handle_request", handle_request, st); + submit_gauge ("apache_scoreboard", "request_start" , request_start, st); + submit_gauge ("apache_scoreboard", "request_end" , request_end, st); + submit_gauge ("apache_scoreboard", "response_start", response_start, st); + submit_gauge ("apache_scoreboard", "response_end" , response_end, st); + } } static int apache_read_host (user_data_t *user_data) /* {{{ */ @@ -515,6 +598,9 @@ static int apache_read_host (user_data_t *user_data) /* {{{ */ st = user_data->data; + assert (st->url != NULL); + /* (Assured by `config_add') */ + if (st->curl == NULL) { int status; @@ -525,17 +611,22 @@ static int apache_read_host (user_data_t *user_data) /* {{{ */ } assert (st->curl != NULL); - if (st->url == NULL) - return (-1); - st->apache_buffer_fill = 0; - if (curl_easy_perform (st->curl) != 0) + if (curl_easy_perform (st->curl) != CURLE_OK) { ERROR ("apache: curl_easy_perform failed: %s", st->apache_curl_error); return (-1); } + /* fallback - server_type to apache if not set at this time */ + if (st->server_type == -1) + { + WARNING ("apache plugin: Unable to determine server software " + "automatically. Will assume Apache."); + st->server_type = APACHE; + } + ptr = st->apache_buffer; saveptr = NULL; while ((lines[lines_num] = strtok_r (ptr, "\n\r", &saveptr)) != NULL) @@ -555,19 +646,23 @@ static int apache_read_host (user_data_t *user_data) /* {{{ */ { if ((strcmp (fields[0], "Total") == 0) && (strcmp (fields[1], "Accesses:") == 0)) - submit_counter ("apache_requests", "", + submit_derive ("apache_requests", "", atoll (fields[2]), st); else if ((strcmp (fields[0], "Total") == 0) && (strcmp (fields[1], "kBytes:") == 0)) - submit_counter ("apache_bytes", "", + submit_derive ("apache_bytes", "", 1024LL * atoll (fields[2]), st); } else if (fields_num == 2) { if (strcmp (fields[0], "Scoreboard:") == 0) submit_scoreboard (fields[1], st); - else if (strcmp (fields[0], "BusyServers:") == 0) + else if ((strcmp (fields[0], "BusyServers:") == 0) /* Apache 1.* */ + || (strcmp (fields[0], "BusyWorkers:") == 0) /* Apache 2.* */) submit_gauge ("apache_connections", NULL, atol (fields[1]), st); + else if ((strcmp (fields[0], "IdleServers:") == 0) /* Apache 1.x */ + || (strcmp (fields[0], "IdleWorkers:") == 0) /* Apache 2.x */) + submit_gauge ("apache_idle_workers", NULL, atol (fields[1]), st); } } @@ -576,9 +671,18 @@ static int apache_read_host (user_data_t *user_data) /* {{{ */ return (0); } /* }}} int apache_read_host */ +static int apache_init (void) /* {{{ */ +{ + /* Call this while collectd is still single-threaded to avoid + * initialization issues in libgcrypt. */ + curl_global_init (CURL_GLOBAL_SSL); + return (0); +} /* }}} int apache_init */ + void module_register (void) { plugin_register_complex_config ("apache", config); + plugin_register_init ("apache", apache_init); } /* void module_register */ /* vim: set sw=8 noet fdm=marker : */