Fix authentication timeout/invalidation

.codacy.yml

@@ -0,0 +1,8 @@
+---
+exclude_paths:
+  - .github/*.md
+  - CODE_OF_CONDUCT.md
+  - CHANGELOG.md
+  - changelog/**/*.md
+
+...

CHANGELOG.md

@@ -1,6 +1,26 @@
-# Changelog for unreleased
+# Changelog for 0.1.1
 
-The following sections list the changes for unreleased.
+The following sections list the changes for 0.1.1.
+
+## Summary
+
+ * Fix #2: Fix authentication timeout/invalidation
+
+## Details
+
+ * Bugfix #2: Fix authentication timeout/invalidation
+
+   When running the service it happened that the authentication had been invalidated or simply
+   timed out, this should be fixed by simply authenticating the defined user before looping
+   through all the results. At the end also the disconnect function from the used library gets
+   executed.
+
+   https://github.com/promhippie/prometheus-vcd-sd/issues/2
+
+
+# Changelog for 0.1.0
+
+The following sections list the changes for 0.1.0.
 
 ## Summary
 

CODE_OF_CONDUCT.md

@@ -1,76 +1,129 @@
+
 # Contributor Covenant Code of Conduct
 
 ## Our Pledge
 
-In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to making participation in our project and
-our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, sex characteristics, gender identity and expression,
-level of experience, education, socio-economic status, nationality, personal
-appearance, race, religion, or sexual identity and orientation.
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
 
 ## Our Standards
 
-Examples of behavior that contributes to creating a positive environment
-include:
+Examples of behavior that contributes to a positive environment for our
+community include:
 
--   Using welcoming and inclusive language
--   Being respectful of differing viewpoints and experiences
--   Gracefully accepting constructive criticism
--   Focusing on what is best for the community
--   Showing empathy towards other community members
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
 
-Examples of unacceptable behavior by participants include:
+Examples of unacceptable behavior include:
 
--   The use of sexualized language or imagery and unwelcome sexual attention or
-    advances
--   Trolling, insulting/derogatory comments, and personal or political attacks
--   Public or private harassment
--   Publishing others' private information, such as a physical or electronic
-    address, without explicit permission
--   Other conduct which could reasonably be considered inappropriate in a
-    professional setting
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
 
-## Our Responsibilities
+## Enforcement Responsibilities
 
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in
-response to any instances of unacceptable behavior.
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
 
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
 
 ## Scope
 
-This Code of Conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community. Examples of
-representing a project or community include using an official project e-mail
-address, posting via an official social media account, or acting as an appointed
-representative at an online or offline event. Representation of a project may be
-further defined and clarified by project maintainers.
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
 
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at [[email protected].](mailto:[email protected].) All
-complaints will be reviewed and investigated and will result in a response that
-is deemed necessary and appropriate to the circumstances. The project team is
-obligated to maintain confidentiality with regard to the reporter of an incident.
-Further details of specific enforcement policies may be posted separately.
+reported to the community leaders responsible for enforcement at
+[email protected]. All complaints will be reviewed and investigated
+promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
 
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior,  harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
 
 ## Attribution
 
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at <https://www.contributor-covenant.org/version/1/4/code-of-conduct.html>
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
 
 [homepage]: https://www.contributor-covenant.org
 
-For answers to common questions about this code of conduct, see
-<https://www.contributor-covenant.org/faq>
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

README.md

@@ -36,7 +36,7 @@ The following list of meta labels can be used to relabel your scrape results ent
 
 Here you get a snippet for the Prometheus `scrape_config` that configures Prometheus to scrape `node_exporter` assuming that it is deployed on all your servers.
 
-```
+```yml
 - job_name: node
   file_sd_configs:
   - files: [ "/etc/prometheus/vcd.json" ]
@@ -54,7 +54,7 @@ Here you get a snippet for the Prometheus `scrape_config` that configures Promet
 
 Make sure you have a working Go environment, for further reference or a guide take a look at the [install instructions](http://golang.org/doc/install.html). This project requires Go >= v1.11.
 
-```bash
+```console
 git clone https://github.com/promhippie/prometheus-vcd-sd.git
 cd prometheus-vcd-sd
 

changelog/0.1.1_2020-07-02/auth-timeout.md

@@ -0,0 +1,8 @@
+Bugfix: Fix authentication timeout/invalidation
+
+When running the service it happened that the authentication had been
+invalidated or simply timed out, this should be fixed by simply authenticating
+the defined user before looping through all the results. At the end also the
+disconnect function from the used library gets executed.
+
+https://github.com/promhippie/prometheus-vcd-sd/issues/2

pkg/action/discoverer.go

@@ -12,7 +12,7 @@ import (
 	"github.com/go-kit/kit/log/level"
 	"github.com/prometheus/common/model"
 	"github.com/prometheus/prometheus/discovery/targetgroup"
-	"github.com/vmware/go-vcloud-director/v2/govcd"
+	"github.com/promhippie/prometheus-vcd-sd/pkg/client"
 )
 
 const (
@@ -33,21 +33,11 @@ const (
 var (
 	// ErrClientEndpoint defines an error if the client auth fails.
 	ErrClientEndpoint = errors.New("failed to parse api url")
-
-	// ErrClientAuth defines an error if the client auth fails.
-	ErrClientAuth = errors.New("failed to authenticate client")
 )
 
-// Config wraps the vCloud Director client including org and vdc names.
-type Config struct {
-	client *govcd.VCDClient
-	org    string
-	vdc    string
-}
-
 // Discoverer implements the Prometheus discoverer interface.
 type Discoverer struct {
-	configs   map[string]*Config
+	configs   map[string]*client.Client
 	logger    log.Logger
 	refresh   int
 	separator string
@@ -79,8 +69,21 @@ func (d *Discoverer) getTargets(ctx context.Context) ([]*targetgroup.Group, erro
 	targets := make([]*targetgroup.Group, 0)
 
 	for project, config := range d.configs {
+		if err := config.Authenticate(); err != nil {
+			level.Warn(d.logger).Log(
+				"msg", "Failed to authenticate",
+				"project", project,
+				"err", err,
+			)
+
+			requestFailures.WithLabelValues(project, "auth").Inc()
+			continue
+		}
+
+		defer config.Disconnect()
+
 		nowOrg := time.Now()
-		org, err := config.client.GetOrgByNameOrId(config.org)
+		org, err := config.Upstream.GetOrgByNameOrId(config.Organization)
 		requestDuration.WithLabelValues(project, "org").Observe(time.Since(nowOrg).Seconds())
 
 		if err != nil {
@@ -95,7 +98,7 @@ func (d *Discoverer) getTargets(ctx context.Context) ([]*targetgroup.Group, erro
 		}
 
 		nowVdc := time.Now()
-		vdc, err := org.GetVDCByNameOrId(config.vdc, false)
+		vdc, err := org.GetVDCByNameOrId(config.Datacenter, false)
 		requestDuration.WithLabelValues(project, "vdc").Observe(time.Since(nowVdc).Seconds())
 
 		if err != nil {
@@ -194,8 +197,8 @@ func (d *Discoverer) getTargets(ctx context.Context) ([]*targetgroup.Group, erro
 					Labels: model.LabelSet{
 						model.AddressLabel:            model.LabelValue(vm.VM.NetworkConnectionSection.NetworkConnection[0].IPAddress),
 						model.LabelName(projectLabel): model.LabelValue(project),
-						model.LabelName(orgLabel):     model.LabelValue(config.org),
-						model.LabelName(vdcLabel):     model.LabelValue(config.vdc),
+						model.LabelName(orgLabel):     model.LabelValue(config.Organization),
+						model.LabelName(vdcLabel):     model.LabelValue(config.Datacenter),
 						model.LabelName(nameLabel):    model.LabelValue(vm.VM.Name),
 						model.LabelName(statusLabel):  model.LabelValue(strconv.Itoa(vm.VM.Status)),
 					},
@@ -234,6 +237,8 @@ func (d *Discoverer) getTargets(ctx context.Context) ([]*targetgroup.Group, erro
 				targets = append(targets, target)
 			}
 		}
+
+		config.Disconnect()
 	}
 
 	for k := range d.lasts {

pkg/action/server.go

@@ -15,10 +15,10 @@ import (
 	"github.com/oklog/run"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/promhippie/prometheus-vcd-sd/pkg/adapter"
+	"github.com/promhippie/prometheus-vcd-sd/pkg/client"
 	"github.com/promhippie/prometheus-vcd-sd/pkg/config"
 	"github.com/promhippie/prometheus-vcd-sd/pkg/middleware"
 	"github.com/promhippie/prometheus-vcd-sd/pkg/version"
-	"github.com/vmware/go-vcloud-director/v2/govcd"
 )
 
 // Server handles the server sub-command.
@@ -35,7 +35,7 @@ func Server(cfg *config.Config, logger log.Logger) error {
 
 	{
 		ctx := context.Background()
-		configs := make(map[string]*Config, len(cfg.Target.Credentials))
+		configs := make(map[string]*client.Client, len(cfg.Target.Credentials))
 
 		for _, credential := range cfg.Target.Credentials {
 			parsed, err := url.ParseRequestURI(credential.URL)
@@ -49,29 +49,14 @@ func Server(cfg *config.Config, logger log.Logger) error {
 				return ErrClientEndpoint
 			}
 
-			client := govcd.NewVCDClient(
-				*parsed,
+			configs[credential.Project] = client.New(
+				parsed,
 				credential.Insecure,
-			)
-
-			if err := client.Authenticate(
 				credential.Username,
 				credential.Password,
 				credential.Org,
-			); err != nil {
-				level.Error(logger).Log(
-					"msg", ErrClientAuth,
-					"project", credential.Project,
-				)
-
-				return ErrClientAuth
-			}
-
-			configs[credential.Project] = &Config{
-				client: client,
-				org:    credential.Org,
-				vdc:    credential.Vdc,
-			}
+				credential.Vdc,
+			)
 		}
 
 		disc := Discoverer{