📄 cibmessages.c
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/* $Id: cibmessages.c,v 1.9.2.2 2004/09/11 06:36:31 msoffen Exp $ *//* * Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */#include <portability.h>#include <stdio.h>#include <sys/types.h>#include <unistd.h>#include <stdlib.h>#include <errno.h>#include <fcntl.h>#include <crm/crm.h>#include <clplumbing/cl_log.h>#include <libxml/tree.h>#include <time.h>#include <crm/common/msgutils.h>#include <crm/common/xmlutils.h>#include <crm/cib.h>#include <cibio.h>#include <crm/msg_xml.h>#include <clplumbing/cl_log.h>#include <cibprimatives.h>#include <cibmessages.h>#include <crm/dmalloc_wrapper.h>enum cib_result updateList(xmlNodePtr local_cib, xmlNodePtr update_command, xmlNodePtr failed, int operation, const char *section);xmlNodePtr createCibFragmentAnswer(const char *section, xmlNodePtr failed);gboolean replace_section(const char *section, xmlNodePtr tmpCib, xmlNodePtr command);gboolean check_generation(xmlNodePtr newCib, xmlNodePtr oldCib);gboolean update_results(xmlNodePtr failed, xmlNodePtr target, int operation, int return_code);xmlNodePtrcib_process_request(const char *op, const xmlNodePtr options, const xmlNodePtr fragment, enum cib_result *result){ const char *verbose = NULL; const char *section = NULL; const char *output_section = NULL; xmlNodePtr failed = NULL; xmlNodePtr cib_answer = NULL; gboolean update_the_cib = FALSE; int cib_update_op = CIB_OP_NONE; xmlNodePtr tmpCib; char *new_value = NULL; char *old_value = NULL; int int_value = -1; FNIN(); *result = CIBRES_OK; verbose = xmlGetProp(options, XML_ATTR_VERBOSE); section = xmlGetProp(options, XML_ATTR_FILTER_TYPE); failed = create_xml_node(NULL, XML_TAG_FAILED); cl_log(LOG_DEBUG, "[cib] Processing \"%s\" event", op); if(op == NULL) { *result = CIBRES_FAILED; cl_log(LOG_ERR, "No operation specified\n"); } else if(strcmp("noop", op) == 0) { ; } else if(strcmp("quit", op) == 0) { cl_log(LOG_WARNING, "The CRMd has asked us to exit... complying"); exit(0); } else if (strcmp(CRM_OPERATION_PING, op) == 0) { cib_answer = createPingAnswerFragment(CRM_SYSTEM_CIB, "ok"); } else if (strcmp(CRM_OPERATION_BUMP, op) == 0) { tmpCib = get_cib_copy(); CRM_DEBUG3("Handling a %s for section=%s of the cib", CRM_OPERATION_BUMP, section); /* modify the timestamp */ set_node_tstamp(tmpCib); old_value = xmlGetProp(get_the_CIB(), XML_ATTR_GENERATION); if(old_value != NULL) { new_value = (char*)cl_malloc(128*(sizeof(char))); int_value = atoi(old_value); sprintf(new_value, "%d", ++int_value); } else { new_value = cl_strdup("0"); } cl_log(LOG_DEBUG, "Generation %d(%s)->%s", int_value, old_value, new_value); set_xml_property_copy(tmpCib, XML_ATTR_GENERATION, new_value); cl_free(new_value); if(activateCibXml(tmpCib, CIB_FILENAME) >= 0) { verbose = "true"; } else { *result = CIBRES_FAILED; } } else if (strcmp("query", op) == 0) { CRM_DEBUG2("Handling a query for section=%s of the cib", section); /* force a pick-up of the relevant section before * returning */ verbose = "true"; } else if (strcmp(CRM_OPERATION_ERASE, op) == 0) { xmlNodePtr new_cib = createEmptyCib(); /* Preserve generation counters etc */ copy_in_properties(new_cib, get_the_CIB()); if (activateCibXml(new_cib, CIB_FILENAME) < 0) { *result = CIBRES_FAILED; } } else if (strcmp(CRM_OPERATION_CREATE, op) == 0) { update_the_cib = TRUE; cib_update_op = CIB_OP_ADD; } else if (strcmp(CRM_OPERATION_UPDATE, op) == 0 || strcmp(CRM_OPERATION_WELCOME, op) == 0 || strcmp(CRM_OPERATION_SHUTDOWN_REQ, op) == 0) { update_the_cib = TRUE; cib_update_op = CIB_OP_MODIFY; } else if (strcmp(CRM_OPERATION_DELETE, op) == 0) { update_the_cib = TRUE; cib_update_op = CIB_OP_DELETE; } else if (strcmp(CRM_OPERATION_REPLACE, op) == 0) { CRM_DEBUG2("Replacing section=%s of the cib", section); section = xmlGetProp(fragment, XML_ATTR_SECTION); if (section == NULL || strlen(section) == 0 || strcmp("all", section) == 0) { tmpCib = copy_xml_node_recursive( find_xml_node(fragment, XML_TAG_CIB)); } else { tmpCib = copy_xml_node_recursive(get_the_CIB()); replace_section(section, tmpCib, fragment); } /*if(check_generation(cib_updates, tmpCib) == FALSE) *result = "discarded old update"; else */ if (activateCibXml(tmpCib, CIB_FILENAME) < 0) *result = CIBRES_FAILED; } else { *result = CIBRES_FAILED_NOTSUPPORTED; cl_log(LOG_ERR, "Action [%s] is not supported by the CIB", op); } if (update_the_cib) { CRM_DEBUG("Backing up CIB"); tmpCib = copy_xml_node_recursive(get_the_CIB()); section = xmlGetProp(fragment, XML_ATTR_SECTION); CRM_DEBUG3("Updating section=%s of the cib (op=%s)", section, op); /* should we be doing this? */ /* do logging */ /* make changes to a temp copy then activate */ if(section == NULL) { cl_log(LOG_ERR, "No section specified in %s", XML_ATTR_FILTER_TYPE); *result = CIBRES_FAILED_NOSECTION; } else if(strcmp("all", section) == 0 && cib_update_op == CIB_OP_DELETE) { /* delete */ /* order is no longer important here */ updateList(tmpCib, fragment, failed, cib_update_op, XML_CIB_TAG_STATUS); updateList(tmpCib, fragment, failed, cib_update_op, XML_CIB_TAG_CONSTRAINTS); updateList(tmpCib, fragment, failed, cib_update_op, XML_CIB_TAG_RESOURCES); updateList(tmpCib, fragment, failed, cib_update_op, XML_CIB_TAG_NODES); } else if(strcmp("all", section) == 0) { /* order is no longer important here */ updateList(tmpCib, fragment, failed, cib_update_op, XML_CIB_TAG_NODES); updateList(tmpCib, fragment, failed, cib_update_op, XML_CIB_TAG_RESOURCES); updateList(tmpCib, fragment, failed, cib_update_op, XML_CIB_TAG_CONSTRAINTS); updateList(tmpCib, fragment, failed, cib_update_op, XML_CIB_TAG_STATUS); } else { *result = updateList(tmpCib, fragment, failed, cib_update_op, section); } CRM_DEBUG("Activating temporary CIB"); /* if(check_generation(cib_updates, tmpCib) == FALSE) *//* status = "discarded old update"; *//* else */ if (activateCibXml(tmpCib, CIB_FILENAME) < 0) { *result = CIBRES_FAILED_ACTIVATION; } else if (failed->children != NULL) { *result = CIBRES_FAILED; } CRM_DEBUG2("CIB update status: %d", *result); } output_section = section; if (failed->children != NULL || *result != CIBRES_OK) { cib_answer = createCibFragmentAnswer(NULL /*"all"*/, failed); } else if (verbose != NULL && strcmp("true", verbose) == 0) { cib_answer = createCibFragmentAnswer(output_section, failed); } free_xml(failed); FNRET(cib_answer);}gbooleanreplace_section(const char *section, xmlNodePtr tmpCib, xmlNodePtr fragment){ xmlNodePtr parent = NULL, cib_updates = NULL, new_section = NULL, old_section = NULL; FNIN(); cib_updates = find_xml_node(fragment, XML_TAG_CIB); /* find the old and new versions of the section */ new_section = get_object_root(section, cib_updates); old_section = get_object_root(section, tmpCib); if(old_section == NULL) { cl_log(LOG_ERR, "The CIB is corrupt, cannot replace missing section %s", section); FNRET(FALSE); } else if(new_section == NULL) { cl_log(LOG_ERR, "The CIB is corrupt, cannot set section %s to nothing", section); FNRET(FALSE); } parent = old_section->parent; /* unlink and free the old one */ unlink_xml_node(old_section); free_xml(old_section); /* add the new copy */ add_node_copy(parent, new_section); FNRET(TRUE);}enum cib_resultupdateList(xmlNodePtr local_cib, xmlNodePtr update_fragment, xmlNodePtr failed, int operation, const char *section){ xmlNodePtr child = NULL; xmlNodePtr this_section = get_object_root(section, local_cib); xmlNodePtr cib_updates = find_xml_node(update_fragment, XML_TAG_CIB); xmlNodePtr xml_section = get_object_root(section, cib_updates); if (section == NULL || xml_section == NULL) { cl_log(LOG_ERR, "Section %s not found in message." " CIB update is corrupt, ignoring.", section); return CIBRES_FAILED_NOSECTION; } if(CIB_OP_NONE > operation > CIB_OP_MAX) { cl_log(LOG_ERR, "Invalid operation on section %s", section); return CIBRES_FAILED; } set_node_tstamp(this_section); child = xml_section->children; while(child != NULL) { if(operation == CIB_OP_DELETE) { update_results(failed, child, operation, delete_cib_object(this_section, child)); } else if(operation == CIB_OP_MODIFY) { update_results(failed, child, operation, update_cib_object(this_section, child, FALSE)); } else { update_results(failed, child, operation, add_cib_object(this_section, child)); } child = child->next; } if (failed->children != NULL) return CIBRES_FAILED; else return CIBRES_OK; }xmlNodePtrcreateCibFragmentAnswer(const char *section, xmlNodePtr failed){ xmlNodePtr fragment = create_xml_node(NULL, XML_TAG_FRAGMENT); FNIN(); set_xml_property_copy(fragment, XML_ATTR_SECTION, section); if (section == NULL || strlen(section) == 0 || strcmp("all", section) == 0) { add_node_copy(fragment, get_the_CIB()); } else { xmlNodePtr cib = create_xml_node(fragment, XML_TAG_CIB); add_node_copy(cib, get_object_root(section, get_the_CIB())); copy_in_properties(cib, get_the_CIB()); } if (failed != NULL && failed->children != NULL) { add_node_copy(fragment, failed); } FNRET(fragment);}gbooleancheck_generation(xmlNodePtr newCib, xmlNodePtr oldCib){ char *new_value = xmlGetProp(newCib, XML_ATTR_GENERATION); char *old_value = xmlGetProp(oldCib, XML_ATTR_GENERATION); int int_new_value = -1; int int_old_value = -1; if(old_value != NULL) int_old_value = atoi(old_value); if(new_value != NULL) int_new_value = atoi(new_value); if(int_new_value >= int_old_value) { return TRUE; } else { cl_log(LOG_ERR, "Generation from update (%d) is older than %d", int_new_value, int_old_value); } return FALSE;} gbooleanupdate_results(xmlNodePtr failed, xmlNodePtr target, int operation, int return_code){ gboolean was_error = FALSE; const char *error_msg = NULL; const char *operation_msg = NULL; xmlNodePtr xml_node; FNIN(); if (return_code != CIBRES_OK) { error_msg = cib_error2string(return_code); operation_msg = cib_op2string(operation); xml_node = create_xml_node(failed, XML_FAIL_TAG_CIB); was_error = TRUE; set_xml_property_copy(xml_node, XML_FAILCIB_ATTR_ID, ID(target)); set_xml_property_copy(xml_node, XML_FAILCIB_ATTR_OBJTYPE, TYPE(target)); set_xml_property_copy(xml_node, XML_FAILCIB_ATTR_OP, operation_msg); set_xml_property_copy(xml_node, XML_FAILCIB_ATTR_REASON, error_msg); cl_log(LOG_DEBUG, "Action %s failed: %s (cde=%d)", operation_msg, error_msg, return_code); } FNRET(was_error);}
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