---
# Required Values
endpoint: http://my-jenkins-server:8089
auth:
    authenticator: basicauth/jenkins
# Optional Values
collection_interval: 10m
metrics:
    example.metric.1:
        enabled: true
    example.metric.2:
        enabled: true
    example.metric.3:
        enabled: true
    example.metric.4:
        enabled: true

// To generate the additional code needed to capture metrics, 
// the following command to be run from the shell:
//  go generate -x ./...

//go:generate go run github.com/open-telemetry/opentelemetry-collector-contrib/cmd/mdatagen@v0.80.0 metadata.yaml
package jenkinscireceiver

// There is no code defined within this file.

package jenkinscireceiver

import (
    "go.opentelemetry.io/collector/config/confighttp"
    "go.opentelemetry.io/collector/receiver/scraperhelper"

    "splunk.conf/workshop/example/jenkinscireceiver/internal/metadata"
)

type Config struct {
    // HTTPClientSettings contains all the values
    // that are commonly shared across all HTTP interactions
    // performed by the collector.
    confighttp.HTTPClientSettings `mapstructure:",squash"`
    // ScraperControllerSettings will allow us to schedule 
    // how often to check for updates to builds.
    scraperhelper.ScraperControllerSettings `mapstructure:",squash"`
    // MetricsBuilderConfig contains all the metrics
    // that can be configured.
    metadata.MetricsBuilderConfig `mapstructure:",squash"`
}

func newDefaultConfig() component.Config {
    return &Config{
        ScraperControllerSettings: scraperhelper.NewDefaultScraperControllerSettings(metadata.Type),
        HTTPClientSettings:        confighttp.NewDefaultHTTPClientSettings(),
        MetricsBuilderConfig:      metadata.DefaultMetricsBuilderConfig(),
    }
}

package jenkinscireceiver

type scraper struct {}

func newScraper(cfg *Config, set receiver.CreateSettings) (scraperhelper.Scraper, error) {
    // Create a our scraper with our values 
    s := scraper{
        // To be filled in later
    }
    return scraperhelper.NewScraper(metadata.Type, s.scrape)
}

func (scraper) scrape(ctx context.Context) (pmetric.Metrics, error) {
    // To be filled in
    return pmetrics.NewMetrics(), nil
}

---
dist:
  name: otelcol
  description: "Conf workshop collector"
  output_path: ./dist
  version: v0.0.0-experimental

extensions:
  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/basicauthextension v0.80.0
  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension v0.80.0

receivers:
  - gomod: go.opentelemetry.io/collector/receiver/otlpreceiver v0.80.0
  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/jaegerreceiver v0.80.0
  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/prometheusreceiver v0.80.0
  - gomod: splunk.conf/workshop/example/jenkinscireceiver v0.0.0
    path: ./jenkinscireceiver

processors:
  - gomod: go.opentelemetry.io/collector/processor/batchprocessor v0.80.0

exporters:
  - gomod: go.opentelemetry.io/collector/exporter/loggingexporter v0.80.0
  - gomod: go.opentelemetry.io/collector/exporter/otlpexporter v0.80.0
  - gomod: go.opentelemetry.io/collector/exporter/otlphttpexporter v0.80.0

# This replace is a go directive that allows for redefine
# where to fetch the code to use since the default would be from a remote project.
replaces:
- splunk.conf/workshop/example/jenkinscireceiver => ./jenkinscireceiver

├── build-config.yaml
└── jenkinscireceiver
    ├── go.mod
    ├── config.go
    ├── factory.go
    ├── scraper.go
    └── internal
      └── metadata

func (s scraper) scrape(ctx context.Context) (pmetric.Metrics, error) {
    jobs, err := s.client.GetJobs()
    if err != nil {
        return pmetric.Metrics{}, err
    }

    // Recording the timestamp to ensure
    // all captured data points within this scrape have the same value. 
    now := pcommon.NewTimestampFromTime(time.Now())
    
    // Casting to an int64 to match the expected type
    s.mb.RecordJenkinsJobsCountDataPoint(now, int64(len(jobs)))
    
    // To be filled in

    return s.mb.Emit(), nil
}

func (s scraper) scrape(ctx context.Context) (pmetric.Metrics, error) {
    jobs, err := s.client.GetJobs()
    if err != nil {
        return pmetric.Metrics{}, err
    }

    // Recording the timestamp to ensure
    // all captured data points within this scrape have the same value. 
    now := pcommon.NewTimestampFromTime(time.Now())
    
    // Casting to an int64 to match the expected type
    s.mb.RecordJenkinsJobsCountDataPoint(now, int64(len(jobs)))
    
    for _, job := range jobs {
        // Ensure we have valid results to start off with
        var (
            build  = job.LastCompletedBuild
            status = metadata.AttributeJobStatusUnknown
        )

        // This will check the result of the job, however,
        // since the only defined attributes are 
        // `success`, `failure`, and `unknown`. 
        // it is assume that anything did not finish 
        // with a success or failure to be an unknown status.

        switch build.Result {
        case "aborted", "not_built", "unstable":
            status = metadata.AttributeJobStatusUnknown
        case "success":
            status = metadata.AttributeJobStatusSuccess
        case "failure":
            status = metadata.AttributeJobStatusFailed
        }

        s.mb.RecordJenkinsJobDurationDataPoint(
            now,
            int64(job.LastCompletedBuild.Duration),
            job.Name,
            status,
        )
    }

    return s.mb.Emit(), nil
}

func (s scraper) scrape(ctx context.Context) (pmetric.Metrics, error) {
    jobs, err := s.client.GetJobs()
    if err != nil {
        return pmetric.Metrics{}, err
    }

    // Recording the timestamp to ensure
    // all captured data points within this scrape have the same value. 
    now := pcommon.NewTimestampFromTime(time.Now())
    
    // Casting to an int64 to match the expected type
    s.mb.RecordJenkinsJobsCountDataPoint(now, int64(len(jobs)))
    
    for _, job := range jobs {
        // Ensure we have valid results to start off with
        var (
            build  = job.LastCompletedBuild
            status = metadata.AttributeJobStatusUnknown
        )

        // Previous step here

        // Ensure that the `ChangeSet` has values
        // set so there is a valid value for us to reference
        if len(build.ChangeSet.Items) == 0 {
            continue
        }

        // Making the assumption that the first changeset
        // item is the most recent change.
        change := build.ChangeSet.Items[0]

        // Record the difference from the build time
        // compared against the change timestamp.
        s.mb.RecordJenkinsJobCommitDeltaDataPoint(
            now,
            int64(build.Timestamp-change.Timestamp),
            job.Name,
            status,
        )
    }

    return s.mb.Emit(), nil
}