106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package healthchecker
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import (
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"fmt"
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"os"
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"strconv"
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"time"
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)
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// Configuration
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type Configuration struct {
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filter string
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grace_period time.Duration
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max_parallelism int
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port int
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project string
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pubsub_topic string
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recheck_interval time.Duration
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timeout time.Duration
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}
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// getEnv - get ENV variable or use default value.
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func getEnv(key, fallback string) string {
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if value, ok := os.LookupEnv(key); ok {
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return value
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}
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return fallback
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}
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// GetConfiguration generates configuration by reading ENV variables.
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func GetConfiguration() (*Configuration, error) {
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timeout, err := time.ParseDuration(getEnv("TIMEOUT", "1000ms"))
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if err != nil {
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fmt.Errorf("Failed to parse TIMEOUT env variable: %v", err)
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return nil, err
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}
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recheck_interval, err := time.ParseDuration(getEnv("RECHECK_INTERVAL", "10s"))
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if err != nil {
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fmt.Errorf("Failed to parse RECHECK_INTERVAL env variable: %v", err)
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return nil, err
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}
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max_parallelism, err := strconv.Atoi(getEnv("MAX_PARALLELISM", "100"))
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if err != nil {
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fmt.Errorf("Failed to parse MAX_PARALLELISM env variable: %v", err)
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return nil, err
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}
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grace_period, err := time.ParseDuration(getEnv("GRACE_PERIOD", "180s"))
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if err != nil {
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fmt.Errorf("Failed to parse GRACE_PERIOD env variable: %v", err)
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return nil, err
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}
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port, err := strconv.Atoi(getEnv("TCP_PORT", "80"))
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if err != nil {
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fmt.Errorf("Failed to parse TCP_PORT env variable: %v", err)
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return nil, err
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}
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filter := getEnv("FILTER", "")
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if filter == "" {
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filter = "status = RUNNING"
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} else {
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filter = fmt.Sprintf("(status = RUNNING) AND (%s)", filter)
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}
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project := getEnv("PROJECT", "")
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if project == "" {
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fmt.Errorf("Failed to get PROJECT env variable: %v", err)
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return nil, err
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}
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pubsub_topic := getEnv("PUBSUB_TOPIC", "")
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if pubsub_topic == "" {
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fmt.Errorf("Failed to get PUBSUB_TOPIC env variable: %v", err)
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return nil, err
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}
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return &Configuration{
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filter: filter,
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grace_period: grace_period,
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max_parallelism: max_parallelism,
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port: port,
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project: project,
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pubsub_topic: pubsub_topic,
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recheck_interval: recheck_interval,
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timeout: timeout,
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}, nil
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}
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