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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Fluent Bit
* ==========
* Copyright (C) 2015-2022 The Fluent Bit Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <fluent-bit/flb_output_plugin.h>
#include <fluent-bit/flb_base64.h>
#include <fluent-bit/flb_utils.h>
#include <fluent-bit/flb_http_client.h>
#include <fluent-bit/flb_oauth2.h>
#include "azure_logs_ingestion.h"
#include "azure_logs_ingestion_conf.h"
struct flb_az_li* flb_az_li_ctx_create(struct flb_output_instance *ins,
struct flb_config *config)
{
int ret;
struct flb_az_li *ctx;
(void) ins;
(void) config;
/* Allocate a new context object for this output instance */
ctx = flb_calloc(1, sizeof(struct flb_az_li));
if (!ctx) {
flb_errno();
return NULL;
}
/* Set the conext in output_instance so that we can retrieve it later */
ctx->ins = ins;
ctx->config = config;
/* Set context */
flb_output_set_context(ins, ctx);
/* Load config map */
ret = flb_output_config_map_set(ins, (void *) ctx);
if (ret == -1) {
flb_plg_error(ins, "unable to load configuration");
return NULL;
}
/* config: 'client_id' */
if (!ctx->client_id) {
flb_plg_error(ins, "property 'client_id' is not defined");
flb_az_li_ctx_destroy(ctx);
return NULL;
}
/* config: 'tenant_id' */
if (!ctx->tenant_id) {
flb_plg_error(ins, "property 'tenant_id' is not defined");
flb_az_li_ctx_destroy(ctx);
return NULL;
}
/* config: 'client_secret' */
if (!ctx->client_secret) {
flb_plg_error(ins, "property 'client_secret' is not defined");
flb_az_li_ctx_destroy(ctx);
return NULL;
}
/* config: 'dce_url' */
if (!ctx->dce_url) {
flb_plg_error(ins, "property 'dce_url' is not defined");
flb_az_li_ctx_destroy(ctx);
return NULL;
}
/* config: 'dcr_id' */
if (!ctx->dcr_id) {
flb_plg_error(ins, "property 'dcr_id' is not defined");
flb_az_li_ctx_destroy(ctx);
return NULL;
}
/* config: 'table_name' */
if (!ctx->table_name) {
flb_plg_error(ins, "property 'table_name' is not defined");
flb_az_li_ctx_destroy(ctx);
return NULL;
}
/* Allocate and set auth url */
ctx->auth_url = flb_sds_create_size(sizeof(FLB_AZ_LI_AUTH_URL_TMPLT) - 1 +
flb_sds_len(ctx->tenant_id));
if (!ctx->auth_url) {
flb_errno();
flb_az_li_ctx_destroy(ctx);
return NULL;
}
flb_sds_snprintf(&ctx->auth_url, flb_sds_alloc(ctx->auth_url),
FLB_AZ_LI_AUTH_URL_TMPLT, ctx->tenant_id);
/* Allocate and set dce full url */
ctx->dce_u_url = flb_sds_create_size(sizeof(FLB_AZ_LI_DCE_URL_TMPLT) - 1 +
flb_sds_len(ctx->dce_url) +
flb_sds_len(ctx->dcr_id) +
flb_sds_len(ctx->table_name));
if (!ctx->dce_u_url) {
flb_errno();
flb_az_li_ctx_destroy(ctx);
return NULL;
}
flb_sds_snprintf(&ctx->dce_u_url, flb_sds_alloc(ctx->dce_u_url),
FLB_AZ_LI_DCE_URL_TMPLT, ctx->dce_url,
ctx->dcr_id, ctx->table_name);
/* Initialize the auth mutex */
pthread_mutex_init(&ctx->token_mutex, NULL);
/* Create oauth2 context */
ctx->u_auth = flb_oauth2_create(config, ctx->auth_url,
FLB_AZ_LI_TOKEN_TIMEOUT);
if (!ctx->u_auth) {
flb_plg_error(ins, "cannot create oauth2 context");
flb_az_li_ctx_destroy(ctx);
return NULL;
}
/* Create upstream context for Log Ingsetion endpoint */
ctx->u_dce = flb_upstream_create_url(config, ctx->dce_url,
FLB_AZ_LI_TLS_MODE, ins->tls);
if (!ctx->u_dce) {
flb_plg_error(ins, "upstream creation failed");
flb_az_li_ctx_destroy(ctx);
return NULL;
}
flb_output_upstream_set(ctx->u_dce, ins);
flb_plg_info(ins, "dce_url='%s', dcr='%s', table='%s', stream='Custom-%s'",
ctx->dce_url, ctx->dcr_id, ctx->table_name, ctx->table_name);
return ctx;
}
/* Free the context and created memory */
int flb_az_li_ctx_destroy(struct flb_az_li *ctx)
{
if (!ctx) {
return -1;
}
if (ctx->auth_url) {
flb_sds_destroy(ctx->auth_url);
}
if (ctx->dce_u_url) {
flb_sds_destroy(ctx->dce_u_url);
}
if (ctx->u_auth) {
flb_oauth2_destroy(ctx->u_auth);
}
if (ctx->u_dce) {
flb_upstream_destroy(ctx->u_dce);
}
flb_free(ctx);
return 0;
}
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