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[Example] Add an example for configmap

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This commit is contained in:
Hui Yu
2021-07-29 21:45:47 +08:00
parent 74913ddb9d
commit 568bccbe5b
5 changed files with 192 additions and 1 deletions
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2
README.md
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@@ -21,7 +21,7 @@ git clone https://libwebsockets.org/repo/libwebsockets --depth 1 --branch v4.2-s
cd libwebsockets cd libwebsockets
mkdir build mkdir build
cd build cd build
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/lib .. cmake -DCMAKE_INSTALL_PREFIX=/usr/local ..
make make
sudo make install sudo make install

3
examples/Makefile
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@@ -10,6 +10,7 @@ all:
cd multi_thread; make cd multi_thread; make
cd exec_pod; make cd exec_pod; make
cd list_secret; make cd list_secret; make
cd configmap; make
clean: clean:
cd create_pod; make clean cd create_pod; make clean
@@ -23,12 +24,14 @@ clean:
cd multi_thread; make clean cd multi_thread; make clean
cd exec_pod; make clean cd exec_pod; make clean
cd list_secret; make clean cd list_secret; make clean
cd configmap; make clean
test: test:
cd create_pod; make test; sleep 10 cd create_pod; make test; sleep 10
cd list_pod; make test cd list_pod; make test
cd delete_pod; make test cd delete_pod; make test
cd list_secret; make test cd list_secret; make test
cd configmap; make test
cd generic; make test cd generic; make test
cd multi_thread; make test; sleep 10 cd multi_thread; make test; sleep 10
kubectl describe po test-pod-8 kubectl describe po test-pod-8

1
examples/configmap/.gitignore vendored Normal file
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@@ -0,0 +1 @@
configmap_bin

11
examples/configmap/Makefile Normal file
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@@ -0,0 +1,11 @@
INCLUDE:=-I../../kubernetes/include -I../../kubernetes/model -I../../kubernetes/api -I../../kubernetes/config
LIBS:=-L../../kubernetes/build -lkubernetes -lyaml -lwebsockets -L/usr/local/lib
CFLAGS:=-g
BIN:=configmap_bin
all:
gcc main.c $(CFLAGS) $(INCLUDE) $(LIBS) -o $(BIN)
clean:
rm ./$(BIN)
test:
./$(BIN)

176
examples/configmap/main.c Normal file
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@@ -0,0 +1,176 @@
#include <kube_config.h>
#include <apiClient.h>
#include <CoreV1API.h>
#include <malloc.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
void create_configmap(apiClient_t * apiClient, const char *name, const char *namespace_)
{
char *api_version = strdup("v1");
char *kind = strdup("ConfigMap");
list_t *data = list_create();
keyValuePair_t *kv = keyValuePair_create(strdup("worker1"), strdup("1"));
list_addElement(data, kv);
kv = keyValuePair_create(strdup("worker2"), strdup("2"));
list_addElement(data, kv);
v1_object_meta_t *meta = v1_object_meta_create(NULL,
NULL,
NULL,
0,
NULL,
NULL,
NULL,
0,
NULL,
NULL,
strdup(name),
strdup(namespace_),
NULL,
NULL,
NULL,
NULL);
v1_config_map_t *body = v1_config_map_create(api_version,
NULL,
data,
kind,
meta);
v1_config_map_t *ret_config_map = CoreV1API_createNamespacedConfigMap(apiClient,
namespace_,
body,
NULL,
NULL,
NULL);
printf("%s: The return code of HTTP request=%ld\n", __func__, apiClient->response_code);
if (201 == apiClient->response_code) {
printf("%s: Create the config map successfully.\n", __func__);
} else {
fprintf(stderr, "%s: Failed to create the config map.\n", __func__);
return;
}
if (ret_config_map) {
v1_config_map_free(ret_config_map);
ret_config_map = NULL;
}
if (body) {
v1_config_map_free(body);
body = NULL;
}
}
void list_configmap(apiClient_t * apiClient, const char *namespace_)
{
v1_config_map_list_t *config_map_list = CoreV1API_listNamespacedConfigMap(apiClient,
namespace_, // char *namespace
"true", // char *pretty
0, // int allowWatchBookmarks
NULL, // char * _continue
NULL, // char * fieldSelector
NULL, // char * labelSelector
0, // int limit
NULL, // char * resourceVersion
0, // int timeoutSeconds
0 //int watch
);
printf("%s: The return code of HTTP request=%ld\n", __func__, apiClient->response_code);
if (200 == apiClient->response_code) {
printf("%s: List the config maps successfully.\n", __func__);
} else {
fprintf(stderr, "%s: Failed to list the config maps.\n", __func__);
return;
}
if (config_map_list && config_map_list->items) {
listEntry_t *config_map_list_entry = NULL;
v1_config_map_t *config_map = NULL;
list_ForEach(config_map_list_entry, config_map_list->items) {
config_map = config_map_list_entry->data;
printf("\tThe config map name: %s\n", config_map->metadata->name);
listEntry_t *data_entry = NULL;
keyValuePair_t *pair = NULL;
list_ForEach(data_entry, config_map->data) {
pair = data_entry->data;
printf("\tkey=%s, value=%s\n", pair->key, (char *) pair->value);
}
}
v1_config_map_list_free(config_map_list);
config_map_list = NULL;
} else {
fprintf(stderr, "%s: The config map list is invalid.\n", __func__);
}
}
void delete_configmap(apiClient_t * apiClient, const char *name, const char *namespace_)
{
v1_status_t *status = CoreV1API_deleteNamespacedConfigMap(apiClient,
name, // char *name
namespace_, // char *namespace
NULL, // char *pretty
NULL, // char *dryRun
0, // int gracePeriodSeconds
0, // int orphanDependents
NULL, // char *propagationPolicy
NULL // v1_delete_options_t *body
);
printf("The return code of HTTP request=%ld\n", apiClient->response_code);
if (200 == apiClient->response_code || 202 == apiClient->response_code) {
printf("The config map is deleted successfully.\n");
} else {
if (status && status->message) {
printf("Failed to delete the config map. The error message: %s\n", status->message);
}
}
if (status) {
v1_status_free(status);
status = NULL;
}
}
int main(int argc, char *argv[])
{
char *basePath = NULL;
sslConfig_t *sslConfig = NULL;
list_t *apiKeys = NULL;
int rc = load_kube_config(&basePath, &sslConfig, &apiKeys, NULL); /* NULL means loading configuration from $HOME/.kube/config */
if (rc != 0) {
fprintf(stderr, "Cannot load kubernetes configuration.\n");
return -1;
}
apiClient_t *apiClient = apiClient_create_with_base_path(basePath, sslConfig, apiKeys);
if (!apiClient) {
fprintf(stderr, "Cannot create a kubernetes client.\n");
return -1;
}
char *config_map_name = "cm1";
char *namespace_ = "default";
create_configmap(apiClient, config_map_name, namespace_);
sleep(5);
list_configmap(apiClient, namespace_);
sleep(5);
delete_configmap(apiClient, config_map_name, namespace_);
apiClient_free(apiClient);
apiClient = NULL;
free_client_config(basePath, sslConfig, apiKeys);
basePath = NULL;
sslConfig = NULL;
apiKeys = NULL;
apiClient_unsetupGlobalEnv();
return 0;
}