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Add the examples to demo listing/creating pods

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This commit is contained in:
Hui Yu
2020-03-19 09:56:19 +08:00
parent 781aa24a97
commit cf3729b611
4 changed files with 245 additions and 0 deletions
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8
examples/create_pod/Makefile Normal file
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INCLUDE:=-I../../kubernetes/include -I../../kubernetes/model -I../../kubernetes/api
LIBS:=-L../../kubernetes/build -lkubernetes -lcurl -lpthread -lssl -lz
CFLAGS:=-g
all:
gcc main.c $(CFLAGS) $(INCLUDE) $(LIBS) -o create_pod_bin
clean:
rm ./create_pod_bin

118
examples/create_pod/main.c Normal file
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#include <apiClient.h>
#include <CoreV1API.h>
#include <malloc.h>
#include <stdio.h>
#include <errno.h>
#define K8S_APISERVER_BASEPATH "https://9.111.254.254:6443"
#define K8S_TOKEN_FILE_IN_CLUSTER "/var/run/secrets/kubernetes.io/serviceaccount/token"
#define K8S_TOKEN_BUF_SIZE 1024
#define K8S_AUTH_KEY "Authorization"
#define K8S_AUTH_VALUE_TEMPLATE "Bearer %s"
apiClient_t *g_k8sAPIConnector;
void create_a_pod(apiClient_t *apiClient)
{
char *namespace = "default";
v1_pod_t * podinfo = calloc(1, sizeof(v1_pod_t));
podinfo->api_version = strdup("v1");
podinfo->kind = strdup("Pod");
podinfo->spec = calloc(1, sizeof(v1_pod_spec_t));
podinfo->metadata = calloc(1, sizeof(v1_object_meta_t));
podinfo->metadata->name = strdup("test-pod-6");
list_t *containerlist = list_create();
v1_container_t *con = calloc(1, sizeof(v1_container_t));
con->name = strdup("my-container");
con->image = strdup("ubuntu:16.04");
con->image_pull_policy = strdup("IfNotPresent");
list_t *commandlist = list_create();
char *cmd = strdup("sleep");
list_addElement(commandlist, cmd);
con->command = commandlist;
list_t *arglist = list_create();
char *arg1 = strdup("3600");
list_addElement(arglist, arg1);
con->args = arglist;
list_addElement(containerlist, con);
podinfo->spec->containers = containerlist;
v1_pod_t* apod = CoreV1API_createNamespacedPod(apiClient, namespace, podinfo, NULL, NULL, NULL);
printf("code=%ld\n", apiClient->response_code);
v1_pod_free(apod);
}
int
loadK8sConfigInCluster(char *token, int token_buf_size)
{
static char fname[] = "loadK8sConfigInCluster()";
FILE *fp;
fp = fopen(K8S_TOKEN_FILE_IN_CLUSTER, "r");
if (fp == NULL) {
if (errno == ENOENT) {
printf("\
%s: The file %s does not exist.",
fname, K8S_TOKEN_FILE_IN_CLUSTER);
return (-1);
} else {
printf("\
%s: Failed to open file %s (%m).",
fname, K8S_TOKEN_FILE_IN_CLUSTER);
return (-1);
}
}
while (fgets(token, token_buf_size, fp) != NULL) {
;
}
printf("%s\n", token);
fclose(fp);
return 0;
}
int
init_k8s_connector(const char *token_out_of_cluster)
{
list_t *apiKeys;
apiKeys = list_create();
char *keyToken = strdup(K8S_AUTH_KEY);
char token_in_cluster[K8S_TOKEN_BUF_SIZE];
memset(token_in_cluster, 0, sizeof(token_in_cluster));
//loadK8sConfigInCluster(token_in_cluster, K8S_TOKEN_BUF_SIZE); // in cluster
char valueToken[K8S_TOKEN_BUF_SIZE];
memset(valueToken, 0, sizeof(valueToken));
//sprintf(valueToken, K8S_AUTH_VALUE_TEMPLATE, token); // in cluster
sprintf(valueToken, K8S_AUTH_VALUE_TEMPLATE, token_out_of_cluster); // out of cluster
keyValuePair_t *keyPairToken = keyValuePair_create(keyToken, valueToken);
list_addElement(apiKeys, keyPairToken);
g_k8sAPIConnector = apiClient_create_with_base_path(K8S_APISERVER_BASEPATH, NULL, apiKeys);
}
int main(int argc, char *argv[])
{
init_k8s_connector(argv[1]);
create_a_pod(g_k8sAPIConnector);
apiClient_free(g_k8sAPIConnector);
}

8
examples/list_pod/Makefile Normal file
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INCLUDE:=-I../../kubernetes/include -I../../kubernetes/model -I../../kubernetes/api
LIBS:=-L../../kubernetes/build -lkubernetes -lcurl -lpthread -lssl -lz
CFLAGS:=-g
all:
gcc main.c $(CFLAGS) $(INCLUDE) $(LIBS) -o list_pod_bin
clean:
rm ./list_pod_bin

111
examples/list_pod/main.c Normal file
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#include <apiClient.h>
#include <CoreV1API.h>
#include <malloc.h>
#include <stdio.h>
#include <errno.h>
#define K8S_APISERVER_BASEPATH "https://9.111.254.254:6443"
#define K8S_TOKEN_FILE_IN_CLUSTER "/var/run/secrets/kubernetes.io/serviceaccount/token"
#define K8S_TOKEN_BUF_SIZE 1024
#define K8S_AUTH_KEY "Authorization"
#define K8S_AUTH_VALUE_TEMPLATE "Bearer %s"
apiClient_t *g_k8sAPIConnector;
void list_pod(apiClient_t *apiClient)
{
v1_pod_list_t *pod_list = NULL;
pod_list = CoreV1API_listNamespacedPod( apiClient ,
"default", /*namespace*/
NULL, /* pretty */
0, /* allowWatchBookmarks */
NULL, /* continue */
NULL, /* fieldSelector */
NULL, /* labelSelector */
0, /* limit */
NULL, /* resourceVersion */
0, /* timeoutSeconds */
0 /* watch */
);
printf("return code=%ld\n", apiClient->response_code);
if(pod_list){
printf("Get pod list.\n");
listEntry_t *listEntry = NULL;
v1_pod_t *pod = NULL;
list_ForEach(listEntry, pod_list->items){
pod = listEntry->data;
printf("pod name=%s\n", pod->metadata->name);
}
}else{
printf("Cannot list any pod.\n");
}
}
int
loadK8sConfigInCluster(char *token, int token_buf_size)
{
static char fname[] = "loadK8sConfigInCluster()";
FILE *fp;
fp = fopen(K8S_TOKEN_FILE_IN_CLUSTER, "r");
if (fp == NULL) {
if (errno == ENOENT) {
printf("\
%s: The file %s does not exist.",
fname, K8S_TOKEN_FILE_IN_CLUSTER);
return (-1);
} else {
printf("\
%s: Failed to open file %s (%m).",
fname, K8S_TOKEN_FILE_IN_CLUSTER);
return (-1);
}
}
while (fgets(token, token_buf_size, fp) != NULL) {
;
}
printf("%s\n", token);
fclose(fp);
return 0;
}
int
init_k8s_connector(const char *token_out_of_cluster)
{
list_t *apiKeys;
apiKeys = list_create();
char *keyToken = strdup(K8S_AUTH_KEY);
char token_in_cluster[K8S_TOKEN_BUF_SIZE];
memset(token_in_cluster, 0, sizeof(token_in_cluster));
//loadK8sConfigInCluster(token_in_cluster, K8S_TOKEN_BUF_SIZE); // in cluster
char valueToken[K8S_TOKEN_BUF_SIZE];
memset(valueToken, 0, sizeof(valueToken));
//sprintf(valueToken, K8S_AUTH_VALUE_TEMPLATE, token); // in cluster
sprintf(valueToken, K8S_AUTH_VALUE_TEMPLATE, token_out_of_cluster); // out of cluster
keyValuePair_t *keyPairToken = keyValuePair_create(keyToken, valueToken);
list_addElement(apiKeys, keyPairToken);
g_k8sAPIConnector = apiClient_create_with_base_path(K8S_APISERVER_BASEPATH, NULL, apiKeys);
}
int main(int argc, char *argv[])
{
init_k8s_connector(argv[1]);
list_pod(g_k8sAPIConnector);
apiClient_free(g_k8sAPIConnector);
}