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out_prometheus_remote_write: support zstd compression #10587

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out_prometheus_remote_write: support zstd compression #10587

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14 changes: 13 additions & 1 deletion plugins/out_prometheus_remote_write/remote_write.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
#include <fluent-bit/flb_output_plugin.h>
#include <fluent-bit/flb_snappy.h>
#include <fluent-bit/flb_gzip.h>
#include <fluent-bit/flb_zstd.h>
#include <fluent-bit/flb_metrics.h>
#include <fluent-bit/flb_kv.h>

Expand Down Expand Up @@ -71,6 +72,10 @@ static int http_post(struct prometheus_remote_write_context *ctx,
ret = flb_gzip_compress((void *) body, body_len,
&payload_buf, &payload_size);
}
else if (strcasecmp(ctx->compression, "zstd") == 0) {
ret = flb_zstd_compress((void *) body, body_len,
&payload_buf, &payload_size);
}
else {
payload_buf = (void *) body;
payload_size = body_len;
Expand Down Expand Up @@ -134,6 +139,13 @@ static int http_post(struct prometheus_remote_write_context *ctx,
"gzip",
strlen("gzip"));
}
else if (strcasecmp(ctx->compression, "zstd") == 0) {
flb_http_add_header(c,
"Content-Encoding",
strlen("Content-Encoding"),
"zstd",
strlen("zstd"));
}

/* Basic Auth headers */
if (ctx->http_user && ctx->http_passwd) {
Expand Down Expand Up @@ -415,7 +427,7 @@ static struct flb_config_map config_map[] = {
{
FLB_CONFIG_MAP_STR, "compression", "snappy",
0, FLB_TRUE, offsetof(struct prometheus_remote_write_context, compression),
"Compress the payload with either snappy, gzip if set"
"Compress the payload with either snappy, gzip, zstd if set"
},

#ifdef FLB_HAVE_SIGNV4
Expand Down
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