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[Example] Add an example for configmap
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‎README.md‎

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@@ -21,7 +21,7 @@ git clone https://libwebsockets.org/repo/libwebsockets --depth 1 --branch v4.2-s
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cd libwebsockets
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mkdir build
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cd build
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cmake -DCMAKE_INSTALL_PREFIX=/usr/local/lib ..
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cmake -DCMAKE_INSTALL_PREFIX=/usr/local ..
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make
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sudo make install
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‎examples/Makefile‎

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@@ -10,6 +10,7 @@ all:
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cd multi_thread; make
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cd exec_pod; make
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cd list_secret; make
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cd configmap; make
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clean:
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cd create_pod; make clean
@@ -23,12 +24,14 @@ clean:
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cd multi_thread; make clean
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cd exec_pod; make clean
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cd list_secret; make clean
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cd configmap; make clean
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test:
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cd create_pod; make test; sleep 10
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cd list_pod; make test
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cd delete_pod; make test
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cd list_secret; make test
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cd configmap; make test
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cd generic; make test
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cd multi_thread; make test; sleep 10
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kubectl describe po test-pod-8

‎examples/configmap/.gitignore‎

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@@ -0,0 +1 @@
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configmap_bin

‎examples/configmap/Makefile‎

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INCLUDE:=-I../../kubernetes/include -I../../kubernetes/model -I../../kubernetes/api -I../../kubernetes/config
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LIBS:=-L../../kubernetes/build -lkubernetes -lyaml -lwebsockets -L/usr/local/lib
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CFLAGS:=-g
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BIN:=configmap_bin
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all:
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gcc main.c $(CFLAGS) $(INCLUDE) $(LIBS) -o $(BIN)
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clean:
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rm ./$(BIN)
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test:
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./$(BIN)

‎examples/configmap/main.c‎

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#include <kube_config.h>
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#include <apiClient.h>
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#include <CoreV1API.h>
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#include <malloc.h>
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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void create_configmap(apiClient_t * apiClient, const char *name, const char *namespace_)
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{
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char *api_version = strdup("v1");
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char *kind = strdup("ConfigMap");
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list_t *data = list_create();
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keyValuePair_t *kv = keyValuePair_create(strdup("worker1"), strdup("1"));
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list_addElement(data, kv);
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kv = keyValuePair_create(strdup("worker2"), strdup("2"));
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list_addElement(data, kv);
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v1_object_meta_t *meta = v1_object_meta_create(NULL,
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NULL,
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NULL,
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0,
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NULL,
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NULL,
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NULL,
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0,
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NULL,
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NULL,
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strdup(name),
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strdup(namespace_),
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NULL,
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NULL,
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NULL,
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NULL);
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v1_config_map_t *body = v1_config_map_create(api_version,
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NULL,
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data,
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kind,
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meta);
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v1_config_map_t *ret_config_map = CoreV1API_createNamespacedConfigMap(apiClient,
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namespace_,
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body,
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NULL,
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NULL,
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NULL);
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printf("%s: The return code of HTTP request=%ld\n", __func__, apiClient->response_code);
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if (201 == apiClient->response_code) {
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printf("%s: Create the config map successfully.\n", __func__);
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} else {
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fprintf(stderr, "%s: Failed to create the config map.\n", __func__);
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return;
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}
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if (ret_config_map) {
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v1_config_map_free(ret_config_map);
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ret_config_map = NULL;
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}
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if (body) {
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v1_config_map_free(body);
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body = NULL;
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}
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}
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void list_configmap(apiClient_t * apiClient, const char *namespace_)
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{
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v1_config_map_list_t *config_map_list = CoreV1API_listNamespacedConfigMap(apiClient,
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namespace_, // char *namespace
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"true", // char *pretty
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0, // int allowWatchBookmarks
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NULL, // char * _continue
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NULL, // char * fieldSelector
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NULL, // char * labelSelector
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0, // int limit
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NULL, // char * resourceVersion
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0, // int timeoutSeconds
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0 //int watch
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);
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printf("%s: The return code of HTTP request=%ld\n", __func__, apiClient->response_code);
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if (200 == apiClient->response_code) {
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printf("%s: List the config maps successfully.\n", __func__);
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} else {
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fprintf(stderr, "%s: Failed to list the config maps.\n", __func__);
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return;
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}
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if (config_map_list && config_map_list->items) {
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listEntry_t *config_map_list_entry = NULL;
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v1_config_map_t *config_map = NULL;
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list_ForEach(config_map_list_entry, config_map_list->items) {
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config_map = config_map_list_entry->data;
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printf("\tThe config map name: %s\n", config_map->metadata->name);
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listEntry_t *data_entry = NULL;
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keyValuePair_t *pair = NULL;
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list_ForEach(data_entry, config_map->data) {
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pair = data_entry->data;
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printf("\tkey=%s, value=%s\n", pair->key, (char *) pair->value);
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}
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}
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v1_config_map_list_free(config_map_list);
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config_map_list = NULL;
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} else {
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fprintf(stderr, "%s: The config map list is invalid.\n", __func__);
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}
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}
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void delete_configmap(apiClient_t * apiClient, const char *name, const char *namespace_)
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{
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v1_status_t *status = CoreV1API_deleteNamespacedConfigMap(apiClient,
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name, // char *name
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namespace_, // char *namespace
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NULL, // char *pretty
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NULL, // char *dryRun
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0, // int gracePeriodSeconds
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0, // int orphanDependents
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NULL, // char *propagationPolicy
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NULL // v1_delete_options_t *body
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);
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printf("The return code of HTTP request=%ld\n", apiClient->response_code);
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if (200 == apiClient->response_code || 202 == apiClient->response_code) {
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printf("The config map is deleted successfully.\n");
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} else {
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if (status && status->message) {
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printf("Failed to delete the config map. The error message: %s\n", status->message);
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}
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}
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if (status) {
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v1_status_free(status);
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status = NULL;
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}
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}
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int main(int argc, char *argv[])
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{
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char *basePath = NULL;
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sslConfig_t *sslConfig = NULL;
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list_t *apiKeys = NULL;
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int rc = load_kube_config(&basePath, &sslConfig, &apiKeys, NULL); /* NULL means loading configuration from $HOME/.kube/config */
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if (rc != 0) {
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fprintf(stderr, "Cannot load kubernetes configuration.\n");
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return -1;
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}
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apiClient_t *apiClient = apiClient_create_with_base_path(basePath, sslConfig, apiKeys);
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if (!apiClient) {
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fprintf(stderr, "Cannot create a kubernetes client.\n");
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return -1;
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}
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char *config_map_name = "cm1";
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char *namespace_ = "default";
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create_configmap(apiClient, config_map_name, namespace_);
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sleep(5);
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list_configmap(apiClient, namespace_);
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sleep(5);
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delete_configmap(apiClient, config_map_name, namespace_);
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apiClient_free(apiClient);
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apiClient = NULL;
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free_client_config(basePath, sslConfig, apiKeys);
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basePath = NULL;
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sslConfig = NULL;
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apiKeys = NULL;
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apiClient_unsetupGlobalEnv();
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return 0;
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}

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