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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.admin.otel;
import com.fasterxml.jackson.core.JsonEncoding;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.yahoo.config.model.ApplicationConfigProducerRoot.StatePortInfo;
import com.yahoo.config.provision.Zone;
import java.io.ByteArrayOutputStream;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import static com.yahoo.vespa.defaults.Defaults.getDefaults;
/**
* @author olaa
*/
public class OpenTelemetryConfigGenerator {
private final boolean useTls;
private final String ca_file;
private final String cert_file;
private final String key_file;
private List<StatePortInfo> statePorts = new ArrayList<>();
OpenTelemetryConfigGenerator(Zone zone) {
boolean isCd = true;
boolean isPublic = true;
if (zone != null) {
isCd = zone.system().isCd();
isPublic = zone.system().isPublic();
this.useTls = true;
} else {
// for manual testing
this.useTls = false;
}
if (isCd) {
if (isPublic) {
this.ca_file = "/opt/vespa/var/vespa/trust-store.pem";
this.cert_file = "/var/lib/sia/certs/vespa.external.cd.tenant.cert.pem";
this.key_file = "/var/lib/sia/keys/vespa.external.cd.tenant.key.pem";
} else {
this.ca_file = "/opt/yahoo/share/ssl/certs/athenz_certificate_bundle.pem";
this.cert_file = "/var/lib/sia/certs/vespa.vespa.cd.tenant.cert.pem";
this.key_file = "/var/lib/sia/keys/vespa.vespa.cd.tenant.key.pem";
}
} else {
if (isPublic) {
this.ca_file = "/opt/vespa/var/vespa/trust-store.pem";
this.cert_file = "/var/lib/sia/certs/vespa.external.tenant.cert.pem";
this.key_file = "/var/lib/sia/keys/vespa.external.tenant.key.pem";
} else {
this.ca_file = "/opt/yahoo/share/ssl/certs/athenz_certificate_bundle.pem";
this.cert_file = "/var/lib/sia/certs/vespa.vespa.tenant.cert.pem";
this.key_file = "/var/lib/sia/keys/vespa.vespa.tenant.key.pem";
}
}
}
String receiverName(int index) {
return "prometheus_simple/s" + index;
}
private void addReceivers(JsonGenerator g) throws java.io.IOException {
g.writeFieldName("receivers");
g.writeStartObject();
int counter = 0;
for (var statePort : statePorts) {
addReceiver(g, ++counter, statePort);
}
g.writeEndObject(); // receivers
}
private void addReceiver(JsonGenerator g, int index, StatePortInfo statePort) throws java.io.IOException {
g.writeFieldName(receiverName(index));
g.writeStartObject();
g.writeStringField("collection_interval", "60s");
g.writeStringField("endpoint", statePort.hostName() + ":" + statePort.portNumber());
addUrlInfo(g);
if (useTls) addTls(g);
{
g.writeFieldName("labels");
g.writeStartObject();
g.writeStringField("service_type", statePort.serviceType());
g.writeEndObject();
}
g.writeEndObject();
}
private void addTls(JsonGenerator g) throws java.io.IOException {
g.writeFieldName("tls");
g.writeStartObject();
g.writeStringField("ca_file", ca_file);
g.writeStringField("cert_file", cert_file);
g.writeBooleanField("insecure_skip_verify", true);
g.writeStringField("key_file", key_file);
g.writeEndObject(); // tls
}
private void addUrlInfo(JsonGenerator g) throws java.io.IOException {
g.writeStringField("metrics_path", "/state/v1/metrics");
g.writeFieldName("params");
g.writeStartObject();
g.writeStringField("format", "prometheus");
g.writeEndObject();
}
private void addExporters(JsonGenerator g) throws java.io.IOException {
g.writeFieldName("exporters");
g.writeStartObject();
addFileExporter(g);
g.writeEndObject(); // exporters
}
private void addFileExporter(JsonGenerator g) throws java.io.IOException {
g.writeFieldName("file");
g.writeStartObject();
g.writeStringField("path", getDefaults().underVespaHome("logs/vespa/otel-test.json"));
{
g.writeFieldName("rotation");
g.writeStartObject();
g.writeNumberField("max_megabytes", 10);
g.writeNumberField("max_days", 3);
g.writeNumberField("max_backups", 1);
g.writeEndObject(); // rotation
}
g.writeEndObject(); // file
}
private void addServiceBlock(JsonGenerator g) throws java.io.IOException {
g.writeFieldName("service");
g.writeStartObject();
{
g.writeFieldName("telemetry");
g.writeStartObject();
{
g.writeFieldName("logs");
g.writeStartObject();
g.writeStringField("level", "debug");
g.writeEndObject();
}
g.writeEndObject();
}
{
g.writeFieldName("pipelines");
g.writeStartObject();
addMetricsPipelines(g);
g.writeEndObject(); // pipelines
}
g.writeEndObject(); // service
}
private void addMetricsPipelines(JsonGenerator g) throws java.io.IOException {
g.writeFieldName("metrics");
g.writeStartObject();
{
g.writeFieldName("receivers");
g.writeStartArray();
int counter = 0;
for (var statePort : statePorts) {
g.writeString(receiverName(++counter));
}
g.writeEndArray();
}
g.writeFieldName("processors");
g.writeStartArray();
g.writeEndArray();
{
g.writeFieldName("exporters");
g.writeStartArray();
g.writeString("file");
g.writeEndArray();
}
g.writeEndObject(); // metrics
}
// For now - mostly dummy config
/*
TODO: Create config
1. polling /state/v1 handler of every service (mostly done)
2. Processing with mapping/filtering from metric sets
3. Exporter to correct endpoint (alternatively amended)
*/
public String generate() {
if (statePorts.isEmpty()) {
return "";
}
ByteArrayOutputStream out = new ByteArrayOutputStream();
try {
JsonGenerator g = new JsonFactory().createGenerator(out, JsonEncoding.UTF8);
g.writeStartObject();
addReceivers(g);
addExporters(g);
addServiceBlock(g);
g.writeEndObject(); // root
g.close();
} catch (java.io.IOException e) {
System.err.println("unexpected error: " + e);
return "";
}
return out.toString(StandardCharsets.UTF_8);
}
void addStatePorts(List<StatePortInfo> portList) {
this.statePorts = portList;
}
List<String> referencedPaths() {
return List.of(ca_file, cert_file, key_file);
}
}
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